Update dependencies (#333)

17 files changed, 1730 insertions, 517 deletions

diff --git a/vendor/modernc.org/libc/termios/capi_darwin_amd64.go b/vendor/modernc.org/libc/termios/capi_darwin_amd64.go
index 4e1973f60..7215e0679 100644
--- a/vendor/modernc.org/libc/termios/capi_darwin_amd64.go
+++ b/vendor/modernc.org/libc/termios/capi_darwin_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_amd64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_amd64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_darwin_arm64.go b/vendor/modernc.org/libc/termios/capi_darwin_arm64.go
index 5c28580ef..3e2e7800a 100644
--- a/vendor/modernc.org/libc/termios/capi_darwin_arm64.go
+++ b/vendor/modernc.org/libc/termios/capi_darwin_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_arm64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_arm64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_linux_386.go b/vendor/modernc.org/libc/termios/capi_linux_386.go
index 9a858024e..bc8ddcbe3 100644
--- a/vendor/modernc.org/libc/termios/capi_linux_386.go
+++ b/vendor/modernc.org/libc/termios/capi_linux_386.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_386.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_386.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_linux_amd64.go b/vendor/modernc.org/libc/termios/capi_linux_amd64.go
index c0d5caefb..663db586d 100644
--- a/vendor/modernc.org/libc/termios/capi_linux_amd64.go
+++ b/vendor/modernc.org/libc/termios/capi_linux_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_amd64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_amd64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_linux_arm.go b/vendor/modernc.org/libc/termios/capi_linux_arm.go
index 94134a009..be2265099 100644
--- a/vendor/modernc.org/libc/termios/capi_linux_arm.go
+++ b/vendor/modernc.org/libc/termios/capi_linux_arm.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_linux_arm64.go b/vendor/modernc.org/libc/termios/capi_linux_arm64.go
index 4c924d5ec..f94925e66 100644
--- a/vendor/modernc.org/libc/termios/capi_linux_arm64.go
+++ b/vendor/modernc.org/libc/termios/capi_linux_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_linux_s390x.go b/vendor/modernc.org/libc/termios/capi_linux_s390x.go
index 08d68045a..b4b71f1c3 100644
--- a/vendor/modernc.org/libc/termios/capi_linux_s390x.go
+++ b/vendor/modernc.org/libc/termios/capi_linux_s390x.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_s390x.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_s390x.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
diff --git a/vendor/modernc.org/libc/termios/capi_netbsd_amd64.go b/vendor/modernc.org/libc/termios/capi_netbsd_amd64.go
new file mode 100644
index 000000000..4b6fad625
--- /dev/null
+++ b/vendor/modernc.org/libc/termios/capi_netbsd_amd64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo termios/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_netbsd_amd64.go -pkgname termios', DO NOT EDIT.
+
+package termios
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/termios/termios_darwin_amd64.go b/vendor/modernc.org/libc/termios/termios_darwin_amd64.go
index e4cb841f3..8df6e18a0 100644
--- a/vendor/modernc.org/libc/termios/termios_darwin_amd64.go
+++ b/vendor/modernc.org/libc/termios/termios_darwin_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_amd64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_amd64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -803,14 +803,14 @@ type Cc_t = uint8      /* termios.h:264:25 */
 type Speed_t = uint64  /* termios.h:265:25 */
 
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_cc     [20]Cc_t
-	_         [4]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_cc        [20]Cc_t
+	F__ccgo_pad1 [4]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
 } /* termios.h:267:1 */
 
 // Include tty ioctl's that aren't just for backwards compatibility
@@ -1117,8 +1117,8 @@ type X__darwin_ct_rune_t = int32 /* _types.h:70:33 */ // ct_rune_t
 // mbstate_t is an opaque object to keep conversion state, during multibyte
 // stream conversions.  The content must not be referenced by user programs.
 type X__mbstate_t = struct {
-	_           [0]uint64
-	F__mbstate8 [128]int8
+	F__ccgo_pad1 [0]uint64
+	F__mbstate8  [128]int8
 } /* _types.h:79:3 */
 
 type X__darwin_mbstate_t = X__mbstate_t /* _types.h:81:33 */ // mbstate_t
diff --git a/vendor/modernc.org/libc/termios/termios_darwin_arm64.go b/vendor/modernc.org/libc/termios/termios_darwin_arm64.go
index 95a1e1f6f..1eadf3f82 100644
--- a/vendor/modernc.org/libc/termios/termios_darwin_arm64.go
+++ b/vendor/modernc.org/libc/termios/termios_darwin_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_arm64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_darwin_arm64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -809,14 +809,14 @@ type Cc_t = uint8      /* termios.h:264:25 */
 type Speed_t = uint64  /* termios.h:265:25 */
 
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_cc     [20]Cc_t
-	_         [4]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_cc        [20]Cc_t
+	F__ccgo_pad1 [4]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
 } /* termios.h:267:1 */
 
 // Include tty ioctl's that aren't just for backwards compatibility
diff --git a/vendor/modernc.org/libc/termios/termios_freebsd_amd64.go b/vendor/modernc.org/libc/termios/termios_freebsd_amd64.go
index 4b67b9ebc..f1622be4c 100644
--- a/vendor/modernc.org/libc/termios/termios_freebsd_amd64.go
+++ b/vendor/modernc.org/libc/termios/termios_freebsd_amd64.go
@@ -833,8 +833,8 @@ type X__fixpt_t = X__uint32_t /* _types.h:115:20 */ // fixed point number
 // mbstate_t is an opaque object to keep conversion state during multibyte
 // stream conversions.
 type X__mbstate_t = struct {
-	_           [0]uint64
-	F__mbstate8 [128]int8
+	F__ccgo_pad1 [0]uint64
+	F__mbstate8  [128]int8
 } /* _types.h:124:3 */
 
 type X__rman_res_t = X__uintmax_t /* _types.h:126:25 */
diff --git a/vendor/modernc.org/libc/termios/termios_linux_386.go b/vendor/modernc.org/libc/termios/termios_linux_386.go
index 0025d9a01..94986fa37 100644
--- a/vendor/modernc.org/libc/termios/termios_linux_386.go
+++ b/vendor/modernc.org/libc/termios/termios_linux_386.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_386.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_386.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -50,8 +50,8 @@ const (
 	BS0                            = 0000000
 	BS1                            = 0020000
 	BSDLY                          = 0020000
-	CBAUD                          = 0010017
-	CBAUDEX                        = 0010000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
 	CBRK                           = 0
 	CDISCARD                       = 15
 	CDSUSP                         = 25
@@ -152,6 +152,7 @@ const (
 	TCSADRAIN                      = 1
 	TCSAFLUSH                      = 2
 	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
 	TOSTOP                         = 0000400
 	TTYDEF_CFLAG                   = 1440
 	TTYDEF_IFLAG                   = 11554
@@ -181,6 +182,7 @@ const (
 	XCASE                          = 0000004
 	XTABS                          = 0014000
 	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
 	X_BITS_TYPESIZES_H             = 1
 	X_BITS_TYPES_H                 = 1
 	X_DEFAULT_SOURCE               = 1
@@ -188,6 +190,7 @@ const (
 	X_FILE_OFFSET_BITS             = 64
 	X_HAVE_STRUCT_TERMIOS_C_ISPEED = 1
 	X_HAVE_STRUCT_TERMIOS_C_OSPEED = 1
+	X_ILP32                        = 1
 	X_POSIX_C_SOURCE               = 200809
 	X_POSIX_SOURCE                 = 1
 	X_STDC_PREDEF_H                = 1
@@ -208,7 +211,7 @@ type Wchar_t = int32 /* <builtin>:15:24 */
 type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -223,11 +226,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 //	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -242,7 +245,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // These are defined by the user (or the compiler)
 //    to specify the desired environment:
@@ -250,6 +253,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    __STRICT_ANSI__	ISO Standard C.
 //    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
 //    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
 //    __STDC_WANT_LIB_EXT2__
 // 			Extensions to ISO C99 from TR 27431-2:2010.
 //    __STDC_WANT_IEC_60559_BFP_EXT__
@@ -370,6 +374,8 @@ type X__float128 = float64        /* <builtin>:47:21 */
 // If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
 //    define _DEFAULT_SOURCE.
 
+// This is to enable the ISO C2X extension.
+
 // This is to enable the ISO C11 extension.
 
 // This is to enable the ISO C99 extension.
@@ -392,9 +398,22 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    compatibility with various implementations of <cstdio>, this test
 //    must consider only the value of __cplusplus when compiling C++.
 
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
 // Get definitions of __STDC_* predefined macros, if the compiler has
 //    not preincluded this header automatically.
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -409,7 +428,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This macro indicates that the installed library is the GNU C Library.
 //    For historic reasons the value now is 6 and this will stay from now
@@ -422,7 +441,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    these macros to test for features in specific releases.
 
 // This is here only because every header file already includes this one.
-// Copyright (C) 1992-2018 Free Software Foundation, Inc.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -437,7 +456,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // We are almost always included from features.h.
 
@@ -552,7 +571,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    semantics.
 //
 //    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
-//    semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
 //    __GNUC_GNU_INLINE__ macro definitions.
 
 // GCC 4.3 and above allow passing all anonymous arguments of an
@@ -573,10 +592,14 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    argument to strncpy and strncat, as the char array is not necessarily
 //    a NUL-terminated string.
 
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
 // Determine the wordsize from the preprocessor defines.
 
 // Properties of long double type.  ldbl-96 version.
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -591,7 +614,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // long double is distinct from double, so there is nothing to
 //    define here.
@@ -630,7 +653,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // We need `pid_t'.
 // bits/types.h -- definitions of __*_t types underlying *_t types.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -645,11 +668,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Never include this file directly; use <sys/types.h> instead.
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -664,43 +687,63 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Determine the wordsize from the preprocessor defines.
 
+// Bit size of the time_t type at glibc build time, x86-64 and x32 case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For others, time size is word size.
+
 // Convenience types.
-type X__u_char = uint8   /* types.h:30:23 */
-type X__u_short = uint16 /* types.h:31:28 */
-type X__u_int = uint32   /* types.h:32:22 */
-type X__u_long = uint32  /* types.h:33:27 */
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint32  /* types.h:34:27 */
 
 // Fixed-size types, underlying types depend on word size and compiler.
-type X__int8_t = int8     /* types.h:36:21 */
-type X__uint8_t = uint8   /* types.h:37:23 */
-type X__int16_t = int16   /* types.h:38:26 */
-type X__uint16_t = uint16 /* types.h:39:28 */
-type X__int32_t = int32   /* types.h:40:20 */
-type X__uint32_t = uint32 /* types.h:41:22 */
-type X__int64_t = int64   /* types.h:46:44 */
-type X__uint64_t = uint64 /* types.h:47:46 */
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:47:44 */
+type X__uint64_t = uint64 /* types.h:48:46 */
 
 // Smallest types with at least a given width.
-type X__int_least8_t = X__int8_t     /* types.h:51:18 */
-type X__uint_least8_t = X__uint8_t   /* types.h:52:19 */
-type X__int_least16_t = X__int16_t   /* types.h:53:19 */
-type X__uint_least16_t = X__uint16_t /* types.h:54:20 */
-type X__int_least32_t = X__int32_t   /* types.h:55:19 */
-type X__uint_least32_t = X__uint32_t /* types.h:56:20 */
-type X__int_least64_t = X__int64_t   /* types.h:57:19 */
-type X__uint_least64_t = X__uint64_t /* types.h:58:20 */
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
 
 // quad_t is also 64 bits.
-type X__quad_t = int64    /* types.h:65:37 */
-type X__u_quad_t = uint64 /* types.h:66:46 */
+type X__quad_t = int64    /* types.h:66:37 */
+type X__u_quad_t = uint64 /* types.h:67:46 */
 
 // Largest integral types.
-type X__intmax_t = int64   /* types.h:74:37 */
-type X__uintmax_t = uint64 /* types.h:75:46 */
+type X__intmax_t = int64   /* types.h:75:37 */
+type X__uintmax_t = uint64 /* types.h:76:46 */
 
 // The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
 //    macros for each of the OS types we define below.  The definitions
@@ -712,7 +755,7 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 // 	32		-- "natural" 32-bit type (always int)
 // 	64		-- "natural" 64-bit type (long or long long)
 // 	LONG32		-- 32-bit type, traditionally long
-// 	QUAD		-- 64-bit type, always long long
+// 	QUAD		-- 64-bit type, traditionally long long
 // 	WORD		-- natural type of __WORDSIZE bits (int or long)
 // 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
 //
@@ -734,7 +777,7 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 // We want __extension__ before typedef's that use nonstandard base types
 //    such as `long long' in C89 mode.
 // bits/typesizes.h -- underlying types for *_t.  Linux/x86-64 version.
-//    Copyright (C) 2012-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2012-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -749,7 +792,7 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // See <bits/types.h> for the meaning of these macros.  This file exists so
 //    that <bits/types.h> need not vary across different GNU platforms.
@@ -758,83 +801,110 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 
 // Number of descriptors that can fit in an `fd_set'.
 
-type X__dev_t = X__u_quad_t                /* types.h:143:25 */ // Type of device numbers.
-type X__uid_t = uint32                     /* types.h:144:25 */ // Type of user identifications.
-type X__gid_t = uint32                     /* types.h:145:25 */ // Type of group identifications.
-type X__ino_t = uint32                     /* types.h:146:25 */ // Type of file serial numbers.
-type X__ino64_t = X__u_quad_t              /* types.h:147:27 */ // Type of file serial numbers (LFS).
-type X__mode_t = uint32                    /* types.h:148:26 */ // Type of file attribute bitmasks.
-type X__nlink_t = uint32                   /* types.h:149:27 */ // Type of file link counts.
-type X__off_t = int32                      /* types.h:150:25 */ // Type of file sizes and offsets.
-type X__off64_t = X__quad_t                /* types.h:151:27 */ // Type of file sizes and offsets (LFS).
-type X__pid_t = int32                      /* types.h:152:25 */ // Type of process identifications.
-type X__fsid_t = struct{ F__val [2]int32 } /* types.h:153:26 */ // Type of file system IDs.
-type X__clock_t = int32                    /* types.h:154:27 */ // Type of CPU usage counts.
-type X__rlim_t = uint32                    /* types.h:155:26 */ // Type for resource measurement.
-type X__rlim64_t = X__u_quad_t             /* types.h:156:28 */ // Type for resource measurement (LFS).
-type X__id_t = uint32                      /* types.h:157:24 */ // General type for IDs.
-type X__time_t = int32                     /* types.h:158:26 */ // Seconds since the Epoch.
-type X__useconds_t = uint32                /* types.h:159:30 */ // Count of microseconds.
-type X__suseconds_t = int32                /* types.h:160:31 */ // Signed count of microseconds.
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// Define a 64-bit time type alongsize the 32-bit one.
 
-type X__daddr_t = int32 /* types.h:162:27 */ // The type of a disk address.
-type X__key_t = int32   /* types.h:163:25 */ // Type of an IPC key.
+type X__dev_t = X__uint64_t                /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint32                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = X__uint64_t              /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int32                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = X__int64_t               /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int32                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint32                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = X__uint64_t             /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int32                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int32                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
 
 // Clock ID used in clock and timer functions.
-type X__clockid_t = int32 /* types.h:166:29 */
+type X__clockid_t = int32 /* types.h:168:29 */
 
 // Timer ID returned by `timer_create'.
-type X__timer_t = uintptr /* types.h:169:12 */
+type X__timer_t = uintptr /* types.h:171:12 */
 
 // Type to represent block size.
-type X__blksize_t = int32 /* types.h:172:29 */
+type X__blksize_t = int32 /* types.h:174:29 */
 
 // Types from the Large File Support interface.
 
 // Type to count number of disk blocks.
-type X__blkcnt_t = int32       /* types.h:177:28 */
-type X__blkcnt64_t = X__quad_t /* types.h:178:30 */
+type X__blkcnt_t = int32        /* types.h:179:28 */
+type X__blkcnt64_t = X__int64_t /* types.h:180:30 */
 
 // Type to count file system blocks.
-type X__fsblkcnt_t = uint32        /* types.h:181:30 */
-type X__fsblkcnt64_t = X__u_quad_t /* types.h:182:32 */
+type X__fsblkcnt_t = uint32        /* types.h:183:30 */
+type X__fsblkcnt64_t = X__uint64_t /* types.h:184:32 */
 
 // Type to count file system nodes.
-type X__fsfilcnt_t = uint32        /* types.h:185:30 */
-type X__fsfilcnt64_t = X__u_quad_t /* types.h:186:32 */
+type X__fsfilcnt_t = uint32        /* types.h:187:30 */
+type X__fsfilcnt64_t = X__uint64_t /* types.h:188:32 */
 
 // Type of miscellaneous file system fields.
-type X__fsword_t = int32 /* types.h:189:28 */
+type X__fsword_t = int32 /* types.h:191:28 */
 
-type X__ssize_t = int32 /* types.h:191:27 */ // Type of a byte count, or error.
+type X__ssize_t = int32 /* types.h:193:27 */ // Type of a byte count, or error.
 
 // Signed long type used in system calls.
-type X__syscall_slong_t = int32 /* types.h:194:33 */
+type X__syscall_slong_t = int32 /* types.h:196:33 */
 // Unsigned long type used in system calls.
-type X__syscall_ulong_t = uint32 /* types.h:196:33 */
+type X__syscall_ulong_t = uint32 /* types.h:198:33 */
 
 // These few don't really vary by system, they always correspond
 //    to one of the other defined types.
-type X__loff_t = X__off64_t /* types.h:200:19 */ // Type of file sizes and offsets (LFS).
-type X__caddr_t = uintptr   /* types.h:201:14 */
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
 
 // Duplicates info from stdint.h but this is used in unistd.h.
-type X__intptr_t = int32 /* types.h:204:25 */
+type X__intptr_t = int32 /* types.h:206:25 */
 
 // Duplicate info from sys/socket.h.
-type X__socklen_t = uint32 /* types.h:207:23 */
+type X__socklen_t = uint32 /* types.h:209:23 */
 
 // C99: An integer type that can be accessed as an atomic entity,
 //    even in the presence of asynchronous interrupts.
 //    It is not currently necessary for this to be machine-specific.
-type X__sig_atomic_t = int32 /* types.h:212:13 */
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+type X__time64_t = X__int64_t /* types.h:222:28 */
 
 type Pid_t = X__pid_t /* termios.h:30:17 */
 
 // Get the system-dependent definitions of `struct termios', `tcflag_t',
 //    `cc_t', `speed_t', and all the macros specifying the flag bits.
 // termios type and macro definitions.  Linux version.
-//    Copyright (C) 1993-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1993-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -849,23 +919,41 @@ type Pid_t = X__pid_t /* termios.h:30:17 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 type Cc_t = uint8      /* termios.h:23:23 */
 type Speed_t = uint32  /* termios.h:24:22 */
 type Tcflag_t = uint32 /* termios.h:25:22 */
 
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_line   Cc_t
-	Fc_cc     [32]Cc_t
-	_         [3]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
-} /* termios.h:28:1 */
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
 
 // -
 // Copyright (c) 1982, 1986, 1993
diff --git a/vendor/modernc.org/libc/termios/termios_linux_amd64.go b/vendor/modernc.org/libc/termios/termios_linux_amd64.go
index bd09ff7d5..929ca5f5f 100644
--- a/vendor/modernc.org/libc/termios/termios_linux_amd64.go
+++ b/vendor/modernc.org/libc/termios/termios_linux_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_amd64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_amd64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -50,8 +50,8 @@ const (
 	BS0                            = 0000000
 	BS1                            = 0020000
 	BSDLY                          = 0020000
-	CBAUD                          = 0010017
-	CBAUDEX                        = 0010000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
 	CBRK                           = 0
 	CDISCARD                       = 15
 	CDSUSP                         = 25
@@ -152,6 +152,7 @@ const (
 	TCSADRAIN                      = 1
 	TCSAFLUSH                      = 2
 	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
 	TOSTOP                         = 0000400
 	TTYDEF_CFLAG                   = 1440
 	TTYDEF_IFLAG                   = 11554
@@ -181,6 +182,7 @@ const (
 	XCASE                          = 0000004
 	XTABS                          = 0014000
 	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
 	X_BITS_TYPESIZES_H             = 1
 	X_BITS_TYPES_H                 = 1
 	X_DEFAULT_SOURCE               = 1
@@ -217,7 +219,7 @@ type X__uint128_t = struct {
 type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -232,11 +234,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 //	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -251,7 +253,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // These are defined by the user (or the compiler)
 //    to specify the desired environment:
@@ -259,6 +261,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    __STRICT_ANSI__	ISO Standard C.
 //    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
 //    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
 //    __STDC_WANT_LIB_EXT2__
 // 			Extensions to ISO C99 from TR 27431-2:2010.
 //    __STDC_WANT_IEC_60559_BFP_EXT__
@@ -379,6 +382,8 @@ type X__float128 = float64        /* <builtin>:47:21 */
 // If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
 //    define _DEFAULT_SOURCE.
 
+// This is to enable the ISO C2X extension.
+
 // This is to enable the ISO C11 extension.
 
 // This is to enable the ISO C99 extension.
@@ -401,9 +406,22 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    compatibility with various implementations of <cstdio>, this test
 //    must consider only the value of __cplusplus when compiling C++.
 
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
 // Get definitions of __STDC_* predefined macros, if the compiler has
 //    not preincluded this header automatically.
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -418,7 +436,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This macro indicates that the installed library is the GNU C Library.
 //    For historic reasons the value now is 6 and this will stay from now
@@ -431,7 +449,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    these macros to test for features in specific releases.
 
 // This is here only because every header file already includes this one.
-// Copyright (C) 1992-2018 Free Software Foundation, Inc.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -446,7 +464,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // We are almost always included from features.h.
 
@@ -561,7 +579,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    semantics.
 //
 //    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
-//    semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
 //    __GNUC_GNU_INLINE__ macro definitions.
 
 // GCC 4.3 and above allow passing all anonymous arguments of an
@@ -582,11 +600,15 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    argument to strncpy and strncat, as the char array is not necessarily
 //    a NUL-terminated string.
 
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
 // Determine the wordsize from the preprocessor defines.
 
 // Both x86-64 and x32 use the 64-bit system call interface.
 // Properties of long double type.  ldbl-96 version.
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -601,7 +623,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // long double is distinct from double, so there is nothing to
 //    define here.
@@ -640,7 +662,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // We need `pid_t'.
 // bits/types.h -- definitions of __*_t types underlying *_t types.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -655,11 +677,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Never include this file directly; use <sys/types.h> instead.
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -674,45 +696,64 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Determine the wordsize from the preprocessor defines.
 
 // Both x86-64 and x32 use the 64-bit system call interface.
+// Bit size of the time_t type at glibc build time, x86-64 and x32 case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// For others, time size is word size.
 
 // Convenience types.
-type X__u_char = uint8   /* types.h:30:23 */
-type X__u_short = uint16 /* types.h:31:28 */
-type X__u_int = uint32   /* types.h:32:22 */
-type X__u_long = uint64  /* types.h:33:27 */
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
 
 // Fixed-size types, underlying types depend on word size and compiler.
-type X__int8_t = int8     /* types.h:36:21 */
-type X__uint8_t = uint8   /* types.h:37:23 */
-type X__int16_t = int16   /* types.h:38:26 */
-type X__uint16_t = uint16 /* types.h:39:28 */
-type X__int32_t = int32   /* types.h:40:20 */
-type X__uint32_t = uint32 /* types.h:41:22 */
-type X__int64_t = int64   /* types.h:43:25 */
-type X__uint64_t = uint64 /* types.h:44:27 */
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
 
 // Smallest types with at least a given width.
-type X__int_least8_t = X__int8_t     /* types.h:51:18 */
-type X__uint_least8_t = X__uint8_t   /* types.h:52:19 */
-type X__int_least16_t = X__int16_t   /* types.h:53:19 */
-type X__uint_least16_t = X__uint16_t /* types.h:54:20 */
-type X__int_least32_t = X__int32_t   /* types.h:55:19 */
-type X__uint_least32_t = X__uint32_t /* types.h:56:20 */
-type X__int_least64_t = X__int64_t   /* types.h:57:19 */
-type X__uint_least64_t = X__uint64_t /* types.h:58:20 */
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
 
 // quad_t is also 64 bits.
-type X__quad_t = int64    /* types.h:62:18 */
-type X__u_quad_t = uint64 /* types.h:63:27 */
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
 
 // Largest integral types.
-type X__intmax_t = int64   /* types.h:71:18 */
-type X__uintmax_t = uint64 /* types.h:72:27 */
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
 
 // The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
 //    macros for each of the OS types we define below.  The definitions
@@ -724,7 +765,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 // 	32		-- "natural" 32-bit type (always int)
 // 	64		-- "natural" 64-bit type (long or long long)
 // 	LONG32		-- 32-bit type, traditionally long
-// 	QUAD		-- 64-bit type, always long long
+// 	QUAD		-- 64-bit type, traditionally long long
 // 	WORD		-- natural type of __WORDSIZE bits (int or long)
 // 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
 //
@@ -745,7 +786,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // No need to mark the typedef with __extension__.
 // bits/typesizes.h -- underlying types for *_t.  Linux/x86-64 version.
-//    Copyright (C) 2012-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2012-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -760,7 +801,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // See <bits/types.h> for the meaning of these macros.  This file exists so
 //    that <bits/types.h> need not vary across different GNU platforms.
@@ -775,85 +816,113 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // And for __rlim_t and __rlim64_t.
 
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
 // Number of descriptors that can fit in an `fd_set'.
 
-type X__dev_t = uint64                     /* types.h:143:25 */ // Type of device numbers.
-type X__uid_t = uint32                     /* types.h:144:25 */ // Type of user identifications.
-type X__gid_t = uint32                     /* types.h:145:25 */ // Type of group identifications.
-type X__ino_t = uint64                     /* types.h:146:25 */ // Type of file serial numbers.
-type X__ino64_t = uint64                   /* types.h:147:27 */ // Type of file serial numbers (LFS).
-type X__mode_t = uint32                    /* types.h:148:26 */ // Type of file attribute bitmasks.
-type X__nlink_t = uint64                   /* types.h:149:27 */ // Type of file link counts.
-type X__off_t = int64                      /* types.h:150:25 */ // Type of file sizes and offsets.
-type X__off64_t = int64                    /* types.h:151:27 */ // Type of file sizes and offsets (LFS).
-type X__pid_t = int32                      /* types.h:152:25 */ // Type of process identifications.
-type X__fsid_t = struct{ F__val [2]int32 } /* types.h:153:26 */ // Type of file system IDs.
-type X__clock_t = int64                    /* types.h:154:27 */ // Type of CPU usage counts.
-type X__rlim_t = uint64                    /* types.h:155:26 */ // Type for resource measurement.
-type X__rlim64_t = uint64                  /* types.h:156:28 */ // Type for resource measurement (LFS).
-type X__id_t = uint32                      /* types.h:157:24 */ // General type for IDs.
-type X__time_t = int64                     /* types.h:158:26 */ // Seconds since the Epoch.
-type X__useconds_t = uint32                /* types.h:159:30 */ // Count of microseconds.
-type X__suseconds_t = int64                /* types.h:160:31 */ // Signed count of microseconds.
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
 
-type X__daddr_t = int32 /* types.h:162:27 */ // The type of a disk address.
-type X__key_t = int32   /* types.h:163:25 */ // Type of an IPC key.
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint64                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
 
 // Clock ID used in clock and timer functions.
-type X__clockid_t = int32 /* types.h:166:29 */
+type X__clockid_t = int32 /* types.h:168:29 */
 
 // Timer ID returned by `timer_create'.
-type X__timer_t = uintptr /* types.h:169:12 */
+type X__timer_t = uintptr /* types.h:171:12 */
 
 // Type to represent block size.
-type X__blksize_t = int64 /* types.h:172:29 */
+type X__blksize_t = int64 /* types.h:174:29 */
 
 // Types from the Large File Support interface.
 
 // Type to count number of disk blocks.
-type X__blkcnt_t = int64   /* types.h:177:28 */
-type X__blkcnt64_t = int64 /* types.h:178:30 */
+type X__blkcnt_t = int64   /* types.h:179:28 */
+type X__blkcnt64_t = int64 /* types.h:180:30 */
 
 // Type to count file system blocks.
-type X__fsblkcnt_t = uint64   /* types.h:181:30 */
-type X__fsblkcnt64_t = uint64 /* types.h:182:32 */
+type X__fsblkcnt_t = uint64   /* types.h:183:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:184:32 */
 
 // Type to count file system nodes.
-type X__fsfilcnt_t = uint64   /* types.h:185:30 */
-type X__fsfilcnt64_t = uint64 /* types.h:186:32 */
+type X__fsfilcnt_t = uint64   /* types.h:187:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:188:32 */
 
 // Type of miscellaneous file system fields.
-type X__fsword_t = int64 /* types.h:189:28 */
+type X__fsword_t = int64 /* types.h:191:28 */
 
-type X__ssize_t = int64 /* types.h:191:27 */ // Type of a byte count, or error.
+type X__ssize_t = int64 /* types.h:193:27 */ // Type of a byte count, or error.
 
 // Signed long type used in system calls.
-type X__syscall_slong_t = int64 /* types.h:194:33 */
+type X__syscall_slong_t = int64 /* types.h:196:33 */
 // Unsigned long type used in system calls.
-type X__syscall_ulong_t = uint64 /* types.h:196:33 */
+type X__syscall_ulong_t = uint64 /* types.h:198:33 */
 
 // These few don't really vary by system, they always correspond
 //    to one of the other defined types.
-type X__loff_t = X__off64_t /* types.h:200:19 */ // Type of file sizes and offsets (LFS).
-type X__caddr_t = uintptr   /* types.h:201:14 */
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
 
 // Duplicates info from stdint.h but this is used in unistd.h.
-type X__intptr_t = int64 /* types.h:204:25 */
+type X__intptr_t = int64 /* types.h:206:25 */
 
 // Duplicate info from sys/socket.h.
-type X__socklen_t = uint32 /* types.h:207:23 */
+type X__socklen_t = uint32 /* types.h:209:23 */
 
 // C99: An integer type that can be accessed as an atomic entity,
 //    even in the presence of asynchronous interrupts.
 //    It is not currently necessary for this to be machine-specific.
-type X__sig_atomic_t = int32 /* types.h:212:13 */
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
 
 type Pid_t = X__pid_t /* termios.h:30:17 */
 
 // Get the system-dependent definitions of `struct termios', `tcflag_t',
 //    `cc_t', `speed_t', and all the macros specifying the flag bits.
 // termios type and macro definitions.  Linux version.
-//    Copyright (C) 1993-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1993-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -868,23 +937,41 @@ type Pid_t = X__pid_t /* termios.h:30:17 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 type Cc_t = uint8      /* termios.h:23:23 */
 type Speed_t = uint32  /* termios.h:24:22 */
 type Tcflag_t = uint32 /* termios.h:25:22 */
 
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_line   Cc_t
-	Fc_cc     [32]Cc_t
-	_         [3]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
-} /* termios.h:28:1 */
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
 
 // -
 // Copyright (c) 1982, 1986, 1993
diff --git a/vendor/modernc.org/libc/termios/termios_linux_arm.go b/vendor/modernc.org/libc/termios/termios_linux_arm.go
index 9bab8c404..2721b808e 100644
--- a/vendor/modernc.org/libc/termios/termios_linux_arm.go
+++ b/vendor/modernc.org/libc/termios/termios_linux_arm.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -50,8 +50,8 @@ const (
 	BS0                            = 0000000
 	BS1                            = 0020000
 	BSDLY                          = 0020000
-	CBAUD                          = 0010017
-	CBAUDEX                        = 0010000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
 	CBRK                           = 0
 	CDISCARD                       = 15
 	CDSUSP                         = 25
@@ -152,6 +152,7 @@ const (
 	TCSADRAIN                      = 1
 	TCSAFLUSH                      = 2
 	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
 	TOSTOP                         = 0000400
 	TTYDEF_CFLAG                   = 1440
 	TTYDEF_IFLAG                   = 11554
@@ -181,6 +182,7 @@ const (
 	XCASE                          = 0000004
 	XTABS                          = 0014000
 	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
 	X_BITS_TYPESIZES_H             = 1
 	X_BITS_TYPES_H                 = 1
 	X_DEFAULT_SOURCE               = 1
@@ -207,7 +209,7 @@ type Wchar_t = uint32 /* <builtin>:15:24 */
 type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -222,11 +224,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 //	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -241,7 +243,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // These are defined by the user (or the compiler)
 //    to specify the desired environment:
@@ -249,6 +251,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    __STRICT_ANSI__	ISO Standard C.
 //    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
 //    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
 //    __STDC_WANT_LIB_EXT2__
 // 			Extensions to ISO C99 from TR 27431-2:2010.
 //    __STDC_WANT_IEC_60559_BFP_EXT__
@@ -369,6 +372,8 @@ type X__float128 = float64        /* <builtin>:47:21 */
 // If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
 //    define _DEFAULT_SOURCE.
 
+// This is to enable the ISO C2X extension.
+
 // This is to enable the ISO C11 extension.
 
 // This is to enable the ISO C99 extension.
@@ -391,9 +396,22 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    compatibility with various implementations of <cstdio>, this test
 //    must consider only the value of __cplusplus when compiling C++.
 
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
 // Get definitions of __STDC_* predefined macros, if the compiler has
 //    not preincluded this header automatically.
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -408,7 +426,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This macro indicates that the installed library is the GNU C Library.
 //    For historic reasons the value now is 6 and this will stay from now
@@ -421,7 +439,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    these macros to test for features in specific releases.
 
 // This is here only because every header file already includes this one.
-// Copyright (C) 1992-2018 Free Software Foundation, Inc.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -436,7 +454,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // We are almost always included from features.h.
 
@@ -551,7 +569,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    semantics.
 //
 //    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
-//    semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
 //    __GNUC_GNU_INLINE__ macro definitions.
 
 // GCC 4.3 and above allow passing all anonymous arguments of an
@@ -572,7 +590,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    argument to strncpy and strncat, as the char array is not necessarily
 //    a NUL-terminated string.
 
-// Copyright (C) 1999-2018 Free Software Foundation, Inc.
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -587,10 +609,10 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Properties of long double type.
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -605,7 +627,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This header is included by <sys/cdefs.h>.
 //
@@ -660,7 +682,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // We need `pid_t'.
 // bits/types.h -- definitions of __*_t types underlying *_t types.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -675,11 +697,46 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Never include this file directly; use <sys/types.h> instead.
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, general case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -694,9 +751,9 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
-// Copyright (C) 1999-2018 Free Software Foundation, Inc.
+// Copyright (C) 1999-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -711,41 +768,43 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
+
+// Size in bits of the 'time_t' type of the default ABI.
 
 // Convenience types.
-type X__u_char = uint8   /* types.h:30:23 */
-type X__u_short = uint16 /* types.h:31:28 */
-type X__u_int = uint32   /* types.h:32:22 */
-type X__u_long = uint32  /* types.h:33:27 */
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint32  /* types.h:34:27 */
 
 // Fixed-size types, underlying types depend on word size and compiler.
-type X__int8_t = int8     /* types.h:36:21 */
-type X__uint8_t = uint8   /* types.h:37:23 */
-type X__int16_t = int16   /* types.h:38:26 */
-type X__uint16_t = uint16 /* types.h:39:28 */
-type X__int32_t = int32   /* types.h:40:20 */
-type X__uint32_t = uint32 /* types.h:41:22 */
-type X__int64_t = int64   /* types.h:46:44 */
-type X__uint64_t = uint64 /* types.h:47:46 */
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:47:44 */
+type X__uint64_t = uint64 /* types.h:48:46 */
 
 // Smallest types with at least a given width.
-type X__int_least8_t = X__int8_t     /* types.h:51:18 */
-type X__uint_least8_t = X__uint8_t   /* types.h:52:19 */
-type X__int_least16_t = X__int16_t   /* types.h:53:19 */
-type X__uint_least16_t = X__uint16_t /* types.h:54:20 */
-type X__int_least32_t = X__int32_t   /* types.h:55:19 */
-type X__uint_least32_t = X__uint32_t /* types.h:56:20 */
-type X__int_least64_t = X__int64_t   /* types.h:57:19 */
-type X__uint_least64_t = X__uint64_t /* types.h:58:20 */
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
 
 // quad_t is also 64 bits.
-type X__quad_t = int64    /* types.h:65:37 */
-type X__u_quad_t = uint64 /* types.h:66:46 */
+type X__quad_t = int64    /* types.h:66:37 */
+type X__u_quad_t = uint64 /* types.h:67:46 */
 
 // Largest integral types.
-type X__intmax_t = int64   /* types.h:74:37 */
-type X__uintmax_t = uint64 /* types.h:75:46 */
+type X__intmax_t = int64   /* types.h:75:37 */
+type X__uintmax_t = uint64 /* types.h:76:46 */
 
 // The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
 //    macros for each of the OS types we define below.  The definitions
@@ -757,7 +816,7 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 // 	32		-- "natural" 32-bit type (always int)
 // 	64		-- "natural" 64-bit type (long or long long)
 // 	LONG32		-- 32-bit type, traditionally long
-// 	QUAD		-- 64-bit type, always long long
+// 	QUAD		-- 64-bit type, traditionally long long
 // 	WORD		-- natural type of __WORDSIZE bits (int or long)
 // 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
 //
@@ -779,7 +838,7 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 // We want __extension__ before typedef's that use nonstandard base types
 //    such as `long long' in C89 mode.
 // bits/typesizes.h -- underlying types for *_t.  Generic version.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -794,90 +853,117 @@ type X__uintmax_t = uint64 /* types.h:75:46 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // See <bits/types.h> for the meaning of these macros.  This file exists so
 //    that <bits/types.h> need not vary across different GNU platforms.
 
 // Number of descriptors that can fit in an `fd_set'.
 
-type X__dev_t = X__u_quad_t                /* types.h:143:25 */ // Type of device numbers.
-type X__uid_t = uint32                     /* types.h:144:25 */ // Type of user identifications.
-type X__gid_t = uint32                     /* types.h:145:25 */ // Type of group identifications.
-type X__ino_t = uint32                     /* types.h:146:25 */ // Type of file serial numbers.
-type X__ino64_t = X__u_quad_t              /* types.h:147:27 */ // Type of file serial numbers (LFS).
-type X__mode_t = uint32                    /* types.h:148:26 */ // Type of file attribute bitmasks.
-type X__nlink_t = uint32                   /* types.h:149:27 */ // Type of file link counts.
-type X__off_t = int32                      /* types.h:150:25 */ // Type of file sizes and offsets.
-type X__off64_t = X__quad_t                /* types.h:151:27 */ // Type of file sizes and offsets (LFS).
-type X__pid_t = int32                      /* types.h:152:25 */ // Type of process identifications.
-type X__fsid_t = struct{ F__val [2]int32 } /* types.h:153:26 */ // Type of file system IDs.
-type X__clock_t = int32                    /* types.h:154:27 */ // Type of CPU usage counts.
-type X__rlim_t = uint32                    /* types.h:155:26 */ // Type for resource measurement.
-type X__rlim64_t = X__u_quad_t             /* types.h:156:28 */ // Type for resource measurement (LFS).
-type X__id_t = uint32                      /* types.h:157:24 */ // General type for IDs.
-type X__time_t = int32                     /* types.h:158:26 */ // Seconds since the Epoch.
-type X__useconds_t = uint32                /* types.h:159:30 */ // Count of microseconds.
-type X__suseconds_t = int32                /* types.h:160:31 */ // Signed count of microseconds.
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// Define a 64-bit time type alongsize the 32-bit one.
 
-type X__daddr_t = int32 /* types.h:162:27 */ // The type of a disk address.
-type X__key_t = int32   /* types.h:163:25 */ // Type of an IPC key.
+type X__dev_t = X__uint64_t                /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint32                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = X__uint64_t              /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int32                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = X__int64_t               /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int32                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint32                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = X__uint64_t             /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int32                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int32                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
 
 // Clock ID used in clock and timer functions.
-type X__clockid_t = int32 /* types.h:166:29 */
+type X__clockid_t = int32 /* types.h:168:29 */
 
 // Timer ID returned by `timer_create'.
-type X__timer_t = uintptr /* types.h:169:12 */
+type X__timer_t = uintptr /* types.h:171:12 */
 
 // Type to represent block size.
-type X__blksize_t = int32 /* types.h:172:29 */
+type X__blksize_t = int32 /* types.h:174:29 */
 
 // Types from the Large File Support interface.
 
 // Type to count number of disk blocks.
-type X__blkcnt_t = int32       /* types.h:177:28 */
-type X__blkcnt64_t = X__quad_t /* types.h:178:30 */
+type X__blkcnt_t = int32        /* types.h:179:28 */
+type X__blkcnt64_t = X__int64_t /* types.h:180:30 */
 
 // Type to count file system blocks.
-type X__fsblkcnt_t = uint32        /* types.h:181:30 */
-type X__fsblkcnt64_t = X__u_quad_t /* types.h:182:32 */
+type X__fsblkcnt_t = uint32        /* types.h:183:30 */
+type X__fsblkcnt64_t = X__uint64_t /* types.h:184:32 */
 
 // Type to count file system nodes.
-type X__fsfilcnt_t = uint32        /* types.h:185:30 */
-type X__fsfilcnt64_t = X__u_quad_t /* types.h:186:32 */
+type X__fsfilcnt_t = uint32        /* types.h:187:30 */
+type X__fsfilcnt64_t = X__uint64_t /* types.h:188:32 */
 
 // Type of miscellaneous file system fields.
-type X__fsword_t = int32 /* types.h:189:28 */
+type X__fsword_t = int32 /* types.h:191:28 */
 
-type X__ssize_t = int32 /* types.h:191:27 */ // Type of a byte count, or error.
+type X__ssize_t = int32 /* types.h:193:27 */ // Type of a byte count, or error.
 
 // Signed long type used in system calls.
-type X__syscall_slong_t = int32 /* types.h:194:33 */
+type X__syscall_slong_t = int32 /* types.h:196:33 */
 // Unsigned long type used in system calls.
-type X__syscall_ulong_t = uint32 /* types.h:196:33 */
+type X__syscall_ulong_t = uint32 /* types.h:198:33 */
 
 // These few don't really vary by system, they always correspond
 //    to one of the other defined types.
-type X__loff_t = X__off64_t /* types.h:200:19 */ // Type of file sizes and offsets (LFS).
-type X__caddr_t = uintptr   /* types.h:201:14 */
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
 
 // Duplicates info from stdint.h but this is used in unistd.h.
-type X__intptr_t = int32 /* types.h:204:25 */
+type X__intptr_t = int32 /* types.h:206:25 */
 
 // Duplicate info from sys/socket.h.
-type X__socklen_t = uint32 /* types.h:207:23 */
+type X__socklen_t = uint32 /* types.h:209:23 */
 
 // C99: An integer type that can be accessed as an atomic entity,
 //    even in the presence of asynchronous interrupts.
 //    It is not currently necessary for this to be machine-specific.
-type X__sig_atomic_t = int32 /* types.h:212:13 */
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
+type X__time64_t = X__int64_t /* types.h:222:28 */
 
 type Pid_t = X__pid_t /* termios.h:30:17 */
 
 // Get the system-dependent definitions of `struct termios', `tcflag_t',
 //    `cc_t', `speed_t', and all the macros specifying the flag bits.
 // termios type and macro definitions.  Linux version.
-//    Copyright (C) 1993-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1993-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -892,23 +978,41 @@ type Pid_t = X__pid_t /* termios.h:30:17 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 type Cc_t = uint8      /* termios.h:23:23 */
 type Speed_t = uint32  /* termios.h:24:22 */
 type Tcflag_t = uint32 /* termios.h:25:22 */
 
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_line   Cc_t
-	Fc_cc     [32]Cc_t
-	_         [3]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
-} /* termios.h:28:1 */
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
 
 // -
 // Copyright (c) 1982, 1986, 1993
@@ -956,4 +1060,4 @@ type Termios = struct {
 
 // #define TTYDEFCHARS to include an array of default control characters.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/termios/termios_linux_arm64.go b/vendor/modernc.org/libc/termios/termios_linux_arm64.go
index bb2d96e35..5ff212e6e 100644
--- a/vendor/modernc.org/libc/termios/termios_linux_arm64.go
+++ b/vendor/modernc.org/libc/termios/termios_linux_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm64.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_arm64.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -50,8 +50,8 @@ const (
 	BS0                            = 0000000
 	BS1                            = 0020000
 	BSDLY                          = 0020000
-	CBAUD                          = 0010017
-	CBAUDEX                        = 0010000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
 	CBRK                           = 0
 	CDISCARD                       = 15
 	CDSUSP                         = 25
@@ -152,6 +152,7 @@ const (
 	TCSADRAIN                      = 1
 	TCSAFLUSH                      = 2
 	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
 	TOSTOP                         = 0000400
 	TTYDEF_CFLAG                   = 1440
 	TTYDEF_IFLAG                   = 11554
@@ -181,6 +182,7 @@ const (
 	XCASE                          = 0000004
 	XTABS                          = 0014000
 	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
 	X_BITS_TYPESIZES_H             = 1
 	X_BITS_TYPES_H                 = 1
 	X_DEFAULT_SOURCE               = 1
@@ -217,7 +219,7 @@ type X__uint128_t = struct {
 type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -232,11 +234,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 //	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -251,7 +253,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // These are defined by the user (or the compiler)
 //    to specify the desired environment:
@@ -259,6 +261,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    __STRICT_ANSI__	ISO Standard C.
 //    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
 //    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
 //    __STDC_WANT_LIB_EXT2__
 // 			Extensions to ISO C99 from TR 27431-2:2010.
 //    __STDC_WANT_IEC_60559_BFP_EXT__
@@ -379,6 +382,8 @@ type X__float128 = float64        /* <builtin>:47:21 */
 // If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
 //    define _DEFAULT_SOURCE.
 
+// This is to enable the ISO C2X extension.
+
 // This is to enable the ISO C11 extension.
 
 // This is to enable the ISO C99 extension.
@@ -401,9 +406,22 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    compatibility with various implementations of <cstdio>, this test
 //    must consider only the value of __cplusplus when compiling C++.
 
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
 // Get definitions of __STDC_* predefined macros, if the compiler has
 //    not preincluded this header automatically.
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -418,7 +436,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This macro indicates that the installed library is the GNU C Library.
 //    For historic reasons the value now is 6 and this will stay from now
@@ -431,7 +449,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    these macros to test for features in specific releases.
 
 // This is here only because every header file already includes this one.
-// Copyright (C) 1992-2018 Free Software Foundation, Inc.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -446,7 +464,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // We are almost always included from features.h.
 
@@ -561,7 +579,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    semantics.
 //
 //    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
-//    semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
 //    __GNUC_GNU_INLINE__ macro definitions.
 
 // GCC 4.3 and above allow passing all anonymous arguments of an
@@ -582,9 +600,13 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    argument to strncpy and strncat, as the char array is not necessarily
 //    a NUL-terminated string.
 
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
 // Determine the wordsize from the preprocessor defines.
 //
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -599,10 +621,10 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Properties of long double type.  ldbl-128 version.
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -617,7 +639,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // long double is distinct from double, so there is nothing to
 //    define here.
@@ -651,7 +673,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // Determine the wordsize from the preprocessor defines.
 //
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -666,7 +688,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This file is automatically generated.
 //    It defines a symbol `__stub_FUNCTION' for each function
@@ -675,7 +697,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // We need `pid_t'.
 // bits/types.h -- definitions of __*_t types underlying *_t types.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -690,11 +712,48 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Never include this file directly; use <sys/types.h> instead.
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+//
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Bit size of the time_t type at glibc build time, general case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -709,11 +768,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Determine the wordsize from the preprocessor defines.
 //
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -728,41 +787,43 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
+
+// Size in bits of the 'time_t' type of the default ABI.
 
 // Convenience types.
-type X__u_char = uint8   /* types.h:30:23 */
-type X__u_short = uint16 /* types.h:31:28 */
-type X__u_int = uint32   /* types.h:32:22 */
-type X__u_long = uint64  /* types.h:33:27 */
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
 
 // Fixed-size types, underlying types depend on word size and compiler.
-type X__int8_t = int8     /* types.h:36:21 */
-type X__uint8_t = uint8   /* types.h:37:23 */
-type X__int16_t = int16   /* types.h:38:26 */
-type X__uint16_t = uint16 /* types.h:39:28 */
-type X__int32_t = int32   /* types.h:40:20 */
-type X__uint32_t = uint32 /* types.h:41:22 */
-type X__int64_t = int64   /* types.h:43:25 */
-type X__uint64_t = uint64 /* types.h:44:27 */
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
 
 // Smallest types with at least a given width.
-type X__int_least8_t = X__int8_t     /* types.h:51:18 */
-type X__uint_least8_t = X__uint8_t   /* types.h:52:19 */
-type X__int_least16_t = X__int16_t   /* types.h:53:19 */
-type X__uint_least16_t = X__uint16_t /* types.h:54:20 */
-type X__int_least32_t = X__int32_t   /* types.h:55:19 */
-type X__uint_least32_t = X__uint32_t /* types.h:56:20 */
-type X__int_least64_t = X__int64_t   /* types.h:57:19 */
-type X__uint_least64_t = X__uint64_t /* types.h:58:20 */
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
 
 // quad_t is also 64 bits.
-type X__quad_t = int64    /* types.h:62:18 */
-type X__u_quad_t = uint64 /* types.h:63:27 */
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
 
 // Largest integral types.
-type X__intmax_t = int64   /* types.h:71:18 */
-type X__uintmax_t = uint64 /* types.h:72:27 */
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
 
 // The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
 //    macros for each of the OS types we define below.  The definitions
@@ -774,7 +835,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 // 	32		-- "natural" 32-bit type (always int)
 // 	64		-- "natural" 64-bit type (long or long long)
 // 	LONG32		-- 32-bit type, traditionally long
-// 	QUAD		-- 64-bit type, always long long
+// 	QUAD		-- 64-bit type, traditionally long long
 // 	WORD		-- natural type of __WORDSIZE bits (int or long)
 // 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
 //
@@ -795,7 +856,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // No need to mark the typedef with __extension__.
 // bits/typesizes.h -- underlying types for *_t.  For the generic Linux ABI.
-//    Copyright (C) 2011-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2011-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //    Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
 //
@@ -811,7 +872,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library.  If not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // See <bits/types.h> for the meaning of these macros.  This file exists so
 //    that <bits/types.h> need not vary across different GNU platforms.
@@ -824,85 +885,112 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // And for __rlim_t and __rlim64_t.
 
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
 // Number of descriptors that can fit in an `fd_set'.
 
-type X__dev_t = uint64                     /* types.h:143:25 */ // Type of device numbers.
-type X__uid_t = uint32                     /* types.h:144:25 */ // Type of user identifications.
-type X__gid_t = uint32                     /* types.h:145:25 */ // Type of group identifications.
-type X__ino_t = uint64                     /* types.h:146:25 */ // Type of file serial numbers.
-type X__ino64_t = uint64                   /* types.h:147:27 */ // Type of file serial numbers (LFS).
-type X__mode_t = uint32                    /* types.h:148:26 */ // Type of file attribute bitmasks.
-type X__nlink_t = uint32                   /* types.h:149:27 */ // Type of file link counts.
-type X__off_t = int64                      /* types.h:150:25 */ // Type of file sizes and offsets.
-type X__off64_t = int64                    /* types.h:151:27 */ // Type of file sizes and offsets (LFS).
-type X__pid_t = int32                      /* types.h:152:25 */ // Type of process identifications.
-type X__fsid_t = struct{ F__val [2]int32 } /* types.h:153:26 */ // Type of file system IDs.
-type X__clock_t = int64                    /* types.h:154:27 */ // Type of CPU usage counts.
-type X__rlim_t = uint64                    /* types.h:155:26 */ // Type for resource measurement.
-type X__rlim64_t = uint64                  /* types.h:156:28 */ // Type for resource measurement (LFS).
-type X__id_t = uint32                      /* types.h:157:24 */ // General type for IDs.
-type X__time_t = int64                     /* types.h:158:26 */ // Seconds since the Epoch.
-type X__useconds_t = uint32                /* types.h:159:30 */ // Count of microseconds.
-type X__suseconds_t = int64                /* types.h:160:31 */ // Signed count of microseconds.
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
 
-type X__daddr_t = int32 /* types.h:162:27 */ // The type of a disk address.
-type X__key_t = int32   /* types.h:163:25 */ // Type of an IPC key.
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint32                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
 
 // Clock ID used in clock and timer functions.
-type X__clockid_t = int32 /* types.h:166:29 */
+type X__clockid_t = int32 /* types.h:168:29 */
 
 // Timer ID returned by `timer_create'.
-type X__timer_t = uintptr /* types.h:169:12 */
+type X__timer_t = uintptr /* types.h:171:12 */
 
 // Type to represent block size.
-type X__blksize_t = int32 /* types.h:172:29 */
+type X__blksize_t = int32 /* types.h:174:29 */
 
 // Types from the Large File Support interface.
 
 // Type to count number of disk blocks.
-type X__blkcnt_t = int64   /* types.h:177:28 */
-type X__blkcnt64_t = int64 /* types.h:178:30 */
+type X__blkcnt_t = int64   /* types.h:179:28 */
+type X__blkcnt64_t = int64 /* types.h:180:30 */
 
 // Type to count file system blocks.
-type X__fsblkcnt_t = uint64   /* types.h:181:30 */
-type X__fsblkcnt64_t = uint64 /* types.h:182:32 */
+type X__fsblkcnt_t = uint64   /* types.h:183:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:184:32 */
 
 // Type to count file system nodes.
-type X__fsfilcnt_t = uint64   /* types.h:185:30 */
-type X__fsfilcnt64_t = uint64 /* types.h:186:32 */
+type X__fsfilcnt_t = uint64   /* types.h:187:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:188:32 */
 
 // Type of miscellaneous file system fields.
-type X__fsword_t = int64 /* types.h:189:28 */
+type X__fsword_t = int64 /* types.h:191:28 */
 
-type X__ssize_t = int64 /* types.h:191:27 */ // Type of a byte count, or error.
+type X__ssize_t = int64 /* types.h:193:27 */ // Type of a byte count, or error.
 
 // Signed long type used in system calls.
-type X__syscall_slong_t = int64 /* types.h:194:33 */
+type X__syscall_slong_t = int64 /* types.h:196:33 */
 // Unsigned long type used in system calls.
-type X__syscall_ulong_t = uint64 /* types.h:196:33 */
+type X__syscall_ulong_t = uint64 /* types.h:198:33 */
 
 // These few don't really vary by system, they always correspond
 //    to one of the other defined types.
-type X__loff_t = X__off64_t /* types.h:200:19 */ // Type of file sizes and offsets (LFS).
-type X__caddr_t = uintptr   /* types.h:201:14 */
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
 
 // Duplicates info from stdint.h but this is used in unistd.h.
-type X__intptr_t = int64 /* types.h:204:25 */
+type X__intptr_t = int64 /* types.h:206:25 */
 
 // Duplicate info from sys/socket.h.
-type X__socklen_t = uint32 /* types.h:207:23 */
+type X__socklen_t = uint32 /* types.h:209:23 */
 
 // C99: An integer type that can be accessed as an atomic entity,
 //    even in the presence of asynchronous interrupts.
 //    It is not currently necessary for this to be machine-specific.
-type X__sig_atomic_t = int32 /* types.h:212:13 */
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
 
 type Pid_t = X__pid_t /* termios.h:30:17 */
 
 // Get the system-dependent definitions of `struct termios', `tcflag_t',
 //    `cc_t', `speed_t', and all the macros specifying the flag bits.
 // termios type and macro definitions.  Linux version.
-//    Copyright (C) 1993-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1993-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -917,23 +1005,41 @@ type Pid_t = X__pid_t /* termios.h:30:17 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 type Cc_t = uint8      /* termios.h:23:23 */
 type Speed_t = uint32  /* termios.h:24:22 */
 type Tcflag_t = uint32 /* termios.h:25:22 */
 
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_line   Cc_t
-	Fc_cc     [32]Cc_t
-	_         [3]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
-} /* termios.h:28:1 */
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
 
 // -
 // Copyright (c) 1982, 1986, 1993
@@ -981,4 +1087,4 @@ type Termios = struct {
 
 // #define TTYDEFCHARS to include an array of default control characters.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/termios/termios_linux_s390x.go b/vendor/modernc.org/libc/termios/termios_linux_s390x.go
index bb326fd85..db74bc6f4 100644
--- a/vendor/modernc.org/libc/termios/termios_linux_s390x.go
+++ b/vendor/modernc.org/libc/termios/termios_linux_s390x.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_s390x.go -pkgname termios', DO NOT EDIT.
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_linux_s390x.go -pkgname termios', DO NOT EDIT.
 
 package termios
 
@@ -50,8 +50,8 @@ const (
 	BS0                            = 0000000
 	BS1                            = 0020000
 	BSDLY                          = 0020000
-	CBAUD                          = 0010017
-	CBAUDEX                        = 0010000
+	CBAUD                          = 000000010017
+	CBAUDEX                        = 000000010000
 	CBRK                           = 0
 	CDISCARD                       = 15
 	CDSUSP                         = 25
@@ -152,6 +152,7 @@ const (
 	TCSADRAIN                      = 1
 	TCSAFLUSH                      = 2
 	TCSANOW                        = 0
+	TIOCSER_TEMT                   = 0x01
 	TOSTOP                         = 0000400
 	TTYDEF_CFLAG                   = 1440
 	TTYDEF_IFLAG                   = 11554
@@ -181,6 +182,7 @@ const (
 	XCASE                          = 0000004
 	XTABS                          = 0014000
 	X_ATFILE_SOURCE                = 1
+	X_BITS_TIME64_H                = 1
 	X_BITS_TYPESIZES_H             = 1
 	X_BITS_TYPES_H                 = 1
 	X_DEFAULT_SOURCE               = 1
@@ -217,7 +219,7 @@ type X__uint128_t = struct {
 type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -232,11 +234,11 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 //	POSIX Standard: 7.1-2 General Terminal Interface	<termios.h>
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -251,7 +253,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // These are defined by the user (or the compiler)
 //    to specify the desired environment:
@@ -259,6 +261,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    __STRICT_ANSI__	ISO Standard C.
 //    _ISOC99_SOURCE	Extensions to ISO C89 from ISO C99.
 //    _ISOC11_SOURCE	Extensions to ISO C99 from ISO C11.
+//    _ISOC2X_SOURCE	Extensions to ISO C99 from ISO C2X.
 //    __STDC_WANT_LIB_EXT2__
 // 			Extensions to ISO C99 from TR 27431-2:2010.
 //    __STDC_WANT_IEC_60559_BFP_EXT__
@@ -379,6 +382,8 @@ type X__float128 = float64        /* <builtin>:47:21 */
 // If nothing (other than _GNU_SOURCE and _DEFAULT_SOURCE) is defined,
 //    define _DEFAULT_SOURCE.
 
+// This is to enable the ISO C2X extension.
+
 // This is to enable the ISO C11 extension.
 
 // This is to enable the ISO C99 extension.
@@ -401,9 +406,22 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    compatibility with various implementations of <cstdio>, this test
 //    must consider only the value of __cplusplus when compiling C++.
 
+// GNU formerly extended the scanf functions with modified format
+//    specifiers %as, %aS, and %a[...] that allocate a buffer for the
+//    input using malloc.  This extension conflicts with ISO C99, which
+//    defines %a as a standalone format specifier that reads a floating-
+//    point number; moreover, POSIX.1-2008 provides the same feature
+//    using the modifier letter 'm' instead (%ms, %mS, %m[...]).
+//
+//    We now follow C99 unless GNU extensions are active and the compiler
+//    is specifically in C89 or C++98 mode (strict or not).  For
+//    instance, with GCC, -std=gnu11 will have C99-compliant scanf with
+//    or without -D_GNU_SOURCE, but -std=c89 -D_GNU_SOURCE will have the
+//    old extension.
+
 // Get definitions of __STDC_* predefined macros, if the compiler has
 //    not preincluded this header automatically.
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -418,7 +436,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // This macro indicates that the installed library is the GNU C Library.
 //    For historic reasons the value now is 6 and this will stay from now
@@ -431,7 +449,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    these macros to test for features in specific releases.
 
 // This is here only because every header file already includes this one.
-// Copyright (C) 1992-2018 Free Software Foundation, Inc.
+// Copyright (C) 1992-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -446,7 +464,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // We are almost always included from features.h.
 
@@ -561,7 +579,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    semantics.
 //
 //    clang++ identifies itself as gcc-4.2, but has support for GNU inlining
-//    semantics, that can be checked fot by using the __GNUC_STDC_INLINE_ and
+//    semantics, that can be checked for by using the __GNUC_STDC_INLINE_ and
 //    __GNUC_GNU_INLINE__ macro definitions.
 
 // GCC 4.3 and above allow passing all anonymous arguments of an
@@ -582,10 +600,14 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    argument to strncpy and strncat, as the char array is not necessarily
 //    a NUL-terminated string.
 
+// Undefine (also defined in libc-symbols.h).
+// Copies attributes from the declaration or type referenced by
+//    the argument.
+
 // Determine the wordsize from the preprocessor defines.
 
 // Properties of long double type.  ldbl-opt version.
-//    Copyright (C) 2016-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2016-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -600,7 +622,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // __glibc_macro_warning (MESSAGE) issues warning MESSAGE.  This is
 //    intended for use in preprocessor macros.
@@ -638,7 +660,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 
 // We need `pid_t'.
 // bits/types.h -- definitions of __*_t types underlying *_t types.
-//    Copyright (C) 2002-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2002-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -653,11 +675,31 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Never include this file directly; use <sys/types.h> instead.
 
-// Copyright (C) 1991-2018 Free Software Foundation, Inc.
+// Copyright (C) 1991-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Determine the wordsize from the preprocessor defines.
+
+// Bit size of the time_t type at glibc build time, general case.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -672,43 +714,45 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // Determine the wordsize from the preprocessor defines.
 
+// Size in bits of the 'time_t' type of the default ABI.
+
 // Convenience types.
-type X__u_char = uint8   /* types.h:30:23 */
-type X__u_short = uint16 /* types.h:31:28 */
-type X__u_int = uint32   /* types.h:32:22 */
-type X__u_long = uint64  /* types.h:33:27 */
+type X__u_char = uint8   /* types.h:31:23 */
+type X__u_short = uint16 /* types.h:32:28 */
+type X__u_int = uint32   /* types.h:33:22 */
+type X__u_long = uint64  /* types.h:34:27 */
 
 // Fixed-size types, underlying types depend on word size and compiler.
-type X__int8_t = int8     /* types.h:36:21 */
-type X__uint8_t = uint8   /* types.h:37:23 */
-type X__int16_t = int16   /* types.h:38:26 */
-type X__uint16_t = uint16 /* types.h:39:28 */
-type X__int32_t = int32   /* types.h:40:20 */
-type X__uint32_t = uint32 /* types.h:41:22 */
-type X__int64_t = int64   /* types.h:43:25 */
-type X__uint64_t = uint64 /* types.h:44:27 */
+type X__int8_t = int8     /* types.h:37:21 */
+type X__uint8_t = uint8   /* types.h:38:23 */
+type X__int16_t = int16   /* types.h:39:26 */
+type X__uint16_t = uint16 /* types.h:40:28 */
+type X__int32_t = int32   /* types.h:41:20 */
+type X__uint32_t = uint32 /* types.h:42:22 */
+type X__int64_t = int64   /* types.h:44:25 */
+type X__uint64_t = uint64 /* types.h:45:27 */
 
 // Smallest types with at least a given width.
-type X__int_least8_t = X__int8_t     /* types.h:51:18 */
-type X__uint_least8_t = X__uint8_t   /* types.h:52:19 */
-type X__int_least16_t = X__int16_t   /* types.h:53:19 */
-type X__uint_least16_t = X__uint16_t /* types.h:54:20 */
-type X__int_least32_t = X__int32_t   /* types.h:55:19 */
-type X__uint_least32_t = X__uint32_t /* types.h:56:20 */
-type X__int_least64_t = X__int64_t   /* types.h:57:19 */
-type X__uint_least64_t = X__uint64_t /* types.h:58:20 */
+type X__int_least8_t = X__int8_t     /* types.h:52:18 */
+type X__uint_least8_t = X__uint8_t   /* types.h:53:19 */
+type X__int_least16_t = X__int16_t   /* types.h:54:19 */
+type X__uint_least16_t = X__uint16_t /* types.h:55:20 */
+type X__int_least32_t = X__int32_t   /* types.h:56:19 */
+type X__uint_least32_t = X__uint32_t /* types.h:57:20 */
+type X__int_least64_t = X__int64_t   /* types.h:58:19 */
+type X__uint_least64_t = X__uint64_t /* types.h:59:20 */
 
 // quad_t is also 64 bits.
-type X__quad_t = int64    /* types.h:62:18 */
-type X__u_quad_t = uint64 /* types.h:63:27 */
+type X__quad_t = int64    /* types.h:63:18 */
+type X__u_quad_t = uint64 /* types.h:64:27 */
 
 // Largest integral types.
-type X__intmax_t = int64   /* types.h:71:18 */
-type X__uintmax_t = uint64 /* types.h:72:27 */
+type X__intmax_t = int64   /* types.h:72:18 */
+type X__uintmax_t = uint64 /* types.h:73:27 */
 
 // The machine-dependent file <bits/typesizes.h> defines __*_T_TYPE
 //    macros for each of the OS types we define below.  The definitions
@@ -720,7 +764,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 // 	32		-- "natural" 32-bit type (always int)
 // 	64		-- "natural" 64-bit type (long or long long)
 // 	LONG32		-- 32-bit type, traditionally long
-// 	QUAD		-- 64-bit type, always long long
+// 	QUAD		-- 64-bit type, traditionally long long
 // 	WORD		-- natural type of __WORDSIZE bits (int or long)
 // 	LONGWORD	-- type of __WORDSIZE bits, traditionally long
 //
@@ -741,7 +785,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // No need to mark the typedef with __extension__.
 // bits/typesizes.h -- underlying types for *_t.  Linux/s390 version.
-//    Copyright (C) 2003-2018 Free Software Foundation, Inc.
+//    Copyright (C) 2003-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -756,7 +800,7 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 // See <bits/types.h> for the meaning of these macros.  This file exists so
 //    that <bits/types.h> need not vary across different GNU platforms.
@@ -771,85 +815,113 @@ type X__uintmax_t = uint64 /* types.h:72:27 */
 
 // And for __rlim_t and __rlim64_t.
 
+// And for fsblkcnt_t, fsblkcnt64_t, fsfilcnt_t and fsfilcnt64_t.
+
 // Number of descriptors that can fit in an `fd_set'.
 
-type X__dev_t = uint64                     /* types.h:143:25 */ // Type of device numbers.
-type X__uid_t = uint32                     /* types.h:144:25 */ // Type of user identifications.
-type X__gid_t = uint32                     /* types.h:145:25 */ // Type of group identifications.
-type X__ino_t = uint64                     /* types.h:146:25 */ // Type of file serial numbers.
-type X__ino64_t = uint64                   /* types.h:147:27 */ // Type of file serial numbers (LFS).
-type X__mode_t = uint32                    /* types.h:148:26 */ // Type of file attribute bitmasks.
-type X__nlink_t = uint64                   /* types.h:149:27 */ // Type of file link counts.
-type X__off_t = int64                      /* types.h:150:25 */ // Type of file sizes and offsets.
-type X__off64_t = int64                    /* types.h:151:27 */ // Type of file sizes and offsets (LFS).
-type X__pid_t = int32                      /* types.h:152:25 */ // Type of process identifications.
-type X__fsid_t = struct{ F__val [2]int32 } /* types.h:153:26 */ // Type of file system IDs.
-type X__clock_t = int64                    /* types.h:154:27 */ // Type of CPU usage counts.
-type X__rlim_t = uint64                    /* types.h:155:26 */ // Type for resource measurement.
-type X__rlim64_t = uint64                  /* types.h:156:28 */ // Type for resource measurement (LFS).
-type X__id_t = uint32                      /* types.h:157:24 */ // General type for IDs.
-type X__time_t = int64                     /* types.h:158:26 */ // Seconds since the Epoch.
-type X__useconds_t = uint32                /* types.h:159:30 */ // Count of microseconds.
-type X__suseconds_t = int64                /* types.h:160:31 */ // Signed count of microseconds.
+// bits/time64.h -- underlying types for __time64_t.  Generic version.
+//    Copyright (C) 2018-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library; if not, see
+//    <https://www.gnu.org/licenses/>.
+
+// Define __TIME64_T_TYPE so that it is always a 64-bit type.
+
+// If we already have 64-bit time type then use it.
 
-type X__daddr_t = int32 /* types.h:162:27 */ // The type of a disk address.
-type X__key_t = int32   /* types.h:163:25 */ // Type of an IPC key.
+type X__dev_t = uint64                     /* types.h:145:25 */ // Type of device numbers.
+type X__uid_t = uint32                     /* types.h:146:25 */ // Type of user identifications.
+type X__gid_t = uint32                     /* types.h:147:25 */ // Type of group identifications.
+type X__ino_t = uint64                     /* types.h:148:25 */ // Type of file serial numbers.
+type X__ino64_t = uint64                   /* types.h:149:27 */ // Type of file serial numbers (LFS).
+type X__mode_t = uint32                    /* types.h:150:26 */ // Type of file attribute bitmasks.
+type X__nlink_t = uint64                   /* types.h:151:27 */ // Type of file link counts.
+type X__off_t = int64                      /* types.h:152:25 */ // Type of file sizes and offsets.
+type X__off64_t = int64                    /* types.h:153:27 */ // Type of file sizes and offsets (LFS).
+type X__pid_t = int32                      /* types.h:154:25 */ // Type of process identifications.
+type X__fsid_t = struct{ F__val [2]int32 } /* types.h:155:26 */ // Type of file system IDs.
+type X__clock_t = int64                    /* types.h:156:27 */ // Type of CPU usage counts.
+type X__rlim_t = uint64                    /* types.h:157:26 */ // Type for resource measurement.
+type X__rlim64_t = uint64                  /* types.h:158:28 */ // Type for resource measurement (LFS).
+type X__id_t = uint32                      /* types.h:159:24 */ // General type for IDs.
+type X__time_t = int64                     /* types.h:160:26 */ // Seconds since the Epoch.
+type X__useconds_t = uint32                /* types.h:161:30 */ // Count of microseconds.
+type X__suseconds_t = int64                /* types.h:162:31 */ // Signed count of microseconds.
+
+type X__daddr_t = int32 /* types.h:164:27 */ // The type of a disk address.
+type X__key_t = int32   /* types.h:165:25 */ // Type of an IPC key.
 
 // Clock ID used in clock and timer functions.
-type X__clockid_t = int32 /* types.h:166:29 */
+type X__clockid_t = int32 /* types.h:168:29 */
 
 // Timer ID returned by `timer_create'.
-type X__timer_t = uintptr /* types.h:169:12 */
+type X__timer_t = uintptr /* types.h:171:12 */
 
 // Type to represent block size.
-type X__blksize_t = int64 /* types.h:172:29 */
+type X__blksize_t = int64 /* types.h:174:29 */
 
 // Types from the Large File Support interface.
 
 // Type to count number of disk blocks.
-type X__blkcnt_t = int64   /* types.h:177:28 */
-type X__blkcnt64_t = int64 /* types.h:178:30 */
+type X__blkcnt_t = int64   /* types.h:179:28 */
+type X__blkcnt64_t = int64 /* types.h:180:30 */
 
 // Type to count file system blocks.
-type X__fsblkcnt_t = uint64   /* types.h:181:30 */
-type X__fsblkcnt64_t = uint64 /* types.h:182:32 */
+type X__fsblkcnt_t = uint64   /* types.h:183:30 */
+type X__fsblkcnt64_t = uint64 /* types.h:184:32 */
 
 // Type to count file system nodes.
-type X__fsfilcnt_t = uint64   /* types.h:185:30 */
-type X__fsfilcnt64_t = uint64 /* types.h:186:32 */
+type X__fsfilcnt_t = uint64   /* types.h:187:30 */
+type X__fsfilcnt64_t = uint64 /* types.h:188:32 */
 
 // Type of miscellaneous file system fields.
-type X__fsword_t = int64 /* types.h:189:28 */
+type X__fsword_t = int64 /* types.h:191:28 */
 
-type X__ssize_t = int64 /* types.h:191:27 */ // Type of a byte count, or error.
+type X__ssize_t = int64 /* types.h:193:27 */ // Type of a byte count, or error.
 
 // Signed long type used in system calls.
-type X__syscall_slong_t = int64 /* types.h:194:33 */
+type X__syscall_slong_t = int64 /* types.h:196:33 */
 // Unsigned long type used in system calls.
-type X__syscall_ulong_t = uint64 /* types.h:196:33 */
+type X__syscall_ulong_t = uint64 /* types.h:198:33 */
 
 // These few don't really vary by system, they always correspond
 //    to one of the other defined types.
-type X__loff_t = X__off64_t /* types.h:200:19 */ // Type of file sizes and offsets (LFS).
-type X__caddr_t = uintptr   /* types.h:201:14 */
+type X__loff_t = X__off64_t /* types.h:202:19 */ // Type of file sizes and offsets (LFS).
+type X__caddr_t = uintptr   /* types.h:203:14 */
 
 // Duplicates info from stdint.h but this is used in unistd.h.
-type X__intptr_t = int64 /* types.h:204:25 */
+type X__intptr_t = int64 /* types.h:206:25 */
 
 // Duplicate info from sys/socket.h.
-type X__socklen_t = uint32 /* types.h:207:23 */
+type X__socklen_t = uint32 /* types.h:209:23 */
 
 // C99: An integer type that can be accessed as an atomic entity,
 //    even in the presence of asynchronous interrupts.
 //    It is not currently necessary for this to be machine-specific.
-type X__sig_atomic_t = int32 /* types.h:212:13 */
+type X__sig_atomic_t = int32 /* types.h:214:13 */
+
+// Seconds since the Epoch, visible to user code when time_t is too
+//    narrow only for consistency with the old way of widening too-narrow
+//    types.  User code should never use __time64_t.
 
 type Pid_t = X__pid_t /* termios.h:30:17 */
 
 // Get the system-dependent definitions of `struct termios', `tcflag_t',
 //    `cc_t', `speed_t', and all the macros specifying the flag bits.
 // termios type and macro definitions.  Linux version.
-//    Copyright (C) 1993-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1993-2020 Free Software Foundation, Inc.
 //    This file is part of the GNU C Library.
 //
 //    The GNU C Library is free software; you can redistribute it and/or
@@ -864,23 +936,41 @@ type Pid_t = X__pid_t /* termios.h:30:17 */
 //
 //    You should have received a copy of the GNU Lesser General Public
 //    License along with the GNU C Library; if not, see
-//    <http://www.gnu.org/licenses/>.
+//    <https://www.gnu.org/licenses/>.
 
 type Cc_t = uint8      /* termios.h:23:23 */
 type Speed_t = uint32  /* termios.h:24:22 */
 type Tcflag_t = uint32 /* termios.h:25:22 */
 
+// struct termios definition.  Linux/generic version.
+//    Copyright (C) 2019-2020 Free Software Foundation, Inc.
+//    This file is part of the GNU C Library.
+//
+//    The GNU C Library is free software; you can redistribute it and/or
+//    modify it under the terms of the GNU Lesser General Public
+//    License as published by the Free Software Foundation; either
+//    version 2.1 of the License, or (at your option) any later version.
+//
+//    The GNU C Library is distributed in the hope that it will be useful,
+//    but WITHOUT ANY WARRANTY; without even the implied warranty of
+//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//    Lesser General Public License for more details.
+//
+//    You should have received a copy of the GNU Lesser General Public
+//    License along with the GNU C Library.  If not, see
+//    <https://www.gnu.org/licenses/>.
+
 type Termios = struct {
-	Fc_iflag  Tcflag_t
-	Fc_oflag  Tcflag_t
-	Fc_cflag  Tcflag_t
-	Fc_lflag  Tcflag_t
-	Fc_line   Cc_t
-	Fc_cc     [32]Cc_t
-	_         [3]byte
-	Fc_ispeed Speed_t
-	Fc_ospeed Speed_t
-} /* termios.h:28:1 */
+	Fc_iflag     Tcflag_t
+	Fc_oflag     Tcflag_t
+	Fc_cflag     Tcflag_t
+	Fc_lflag     Tcflag_t
+	Fc_line      Cc_t
+	Fc_cc        [32]Cc_t
+	F__ccgo_pad1 [3]byte
+	Fc_ispeed    Speed_t
+	Fc_ospeed    Speed_t
+} /* termios-struct.h:24:1 */
 
 // -
 // Copyright (c) 1982, 1986, 1993
@@ -928,4 +1018,4 @@ type Termios = struct {
 
 // #define TTYDEFCHARS to include an array of default control characters.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/termios/termios_netbsd_amd64.go b/vendor/modernc.org/libc/termios/termios_netbsd_amd64.go
new file mode 100644
index 000000000..f34384ad1
--- /dev/null
+++ b/vendor/modernc.org/libc/termios/termios_netbsd_amd64.go
@@ -0,0 +1,733 @@
+// Code generated by 'ccgo termios/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -header -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o termios/termios_netbsd_amd64.go -pkgname termios', DO NOT EDIT.
+
+package termios
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	ALTWERASE                 = 0x00000200
+	ARG_MAX                   = 262144
+	B0                        = 0
+	B1000000                  = 1000000
+	B110                      = 110
+	B115200                   = 115200
+	B1200                     = 1200
+	B134                      = 134
+	B14400                    = 14400
+	B150                      = 150
+	B1500000                  = 1500000
+	B1800                     = 1800
+	B19200                    = 19200
+	B200                      = 200
+	B2000000                  = 2000000
+	B230400                   = 230400
+	B2400                     = 2400
+	B2500000                  = 2500000
+	B28800                    = 28800
+	B300                      = 300
+	B3000000                  = 3000000
+	B3500000                  = 3500000
+	B38400                    = 38400
+	B4000000                  = 4000000
+	B460800                   = 460800
+	B4800                     = 4800
+	B50                       = 50
+	B500000                   = 500000
+	B57600                    = 57600
+	B600                      = 600
+	B7200                     = 7200
+	B75                       = 75
+	B76800                    = 76800
+	B921600                   = 921600
+	B9600                     = 9600
+	BC_DIM_MAX                = 65535
+	BRKINT                    = 0x00000002
+	CCTS_OFLOW                = 65536
+	CDISCARD                  = 15
+	CDSUSP                    = 25
+	CDTRCTS                   = 0x00020000
+	CEOF                      = 4
+	CEOT                      = 4
+	CERASE                    = 0177
+	CFLUSH                    = 15
+	CHILD_MAX                 = 160
+	CHWFLOW                   = 1245184
+	CIGNORE                   = 0x00000001
+	CINTR                     = 3
+	CKILL                     = 21
+	CLNEXT                    = 22
+	CLOCAL                    = 0x00008000
+	CMIN                      = 1
+	COLL_WEIGHTS_MAX          = 2
+	CQUIT                     = 034
+	CREAD                     = 0x00000800
+	CREPRINT                  = 18
+	CRPRNT                    = 18
+	CRTSCTS                   = 0x00010000
+	CRTS_IFLOW                = 65536
+	CS5                       = 0x00000000
+	CS6                       = 0x00000100
+	CS7                       = 0x00000200
+	CS8                       = 0x00000300
+	CSIZE                     = 0x00000300
+	CSTART                    = 17
+	CSTATUS                   = 20
+	CSTOP                     = 19
+	CSTOPB                    = 0x00000400
+	CSUSP                     = 26
+	CTIME                     = 0
+	CWERASE                   = 23
+	ECHO                      = 0x00000008
+	ECHOCTL                   = 0x00000040
+	ECHOE                     = 0x00000002
+	ECHOK                     = 0x00000004
+	ECHOKE                    = 0x00000001
+	ECHONL                    = 0x00000010
+	ECHOPRT                   = 0x00000020
+	EXPR_NEST_MAX             = 32
+	EXTA                      = 19200
+	EXTB                      = 38400
+	EXTPROC                   = 0x00000800
+	FLUSHO                    = 0x00800000
+	GID_MAX                   = 2147483647
+	HDLCDISC                  = 9
+	HUPCL                     = 0x00004000
+	ICANON                    = 0x00000100
+	ICRNL                     = 0x00000100
+	IEXTEN                    = 0x00000400
+	IGNBRK                    = 0x00000001
+	IGNCR                     = 0x00000080
+	IGNPAR                    = 0x00000004
+	IMAXBEL                   = 0x00002000
+	INLCR                     = 0x00000040
+	INPCK                     = 0x00000010
+	IOCGROUP_SHIFT            = 8
+	IOCPARM_MASK              = 0x1fff
+	IOCPARM_SHIFT             = 16
+	IOV_MAX                   = 1024
+	ISIG                      = 0x00000080
+	ISTRIP                    = 0x00000020
+	IXANY                     = 0x00000800
+	IXOFF                     = 0x00000400
+	IXON                      = 0x00000200
+	LINE_MAX                  = 2048
+	LINK_MAX                  = 32767
+	LOGIN_NAME_MAX            = 17
+	MAX_CANON                 = 255
+	MAX_INPUT                 = 255
+	MDMBUF                    = 0x00100000
+	NAME_MAX                  = 511
+	NCCS                      = 20
+	NGROUPS_MAX               = 16
+	NOFLSH                    = 0x80000000
+	NOKERNINFO                = 0x02000000
+	NZERO                     = 20
+	OCRNL                     = 0x00000010
+	ONLCR                     = 0x00000002
+	ONLRET                    = 0x00000040
+	ONOCR                     = 0x00000020
+	ONOEOT                    = 0x00000008
+	OPEN_MAX                  = 128
+	OPOST                     = 0x00000001
+	OXTABS                    = 0x00000004
+	PARENB                    = 0x00001000
+	PARMRK                    = 0x00000008
+	PARODD                    = 0x00002000
+	PATH_MAX                  = 1024
+	PENDIN                    = 0x20000000
+	PIPE_BUF                  = 512
+	PPPDISC                   = 5
+	RE_DUP_MAX                = 255
+	SLIPDISC                  = 4
+	STRIPDISC                 = 6
+	TABLDISC                  = 3
+	TCIFLUSH                  = 1
+	TCIOFF                    = 3
+	TCIOFLUSH                 = 3
+	TCION                     = 4
+	TCOFLUSH                  = 2
+	TCOOFF                    = 1
+	TCOON                     = 2
+	TCSADRAIN                 = 1
+	TCSAFLUSH                 = 2
+	TCSANOW                   = 0
+	TCSASOFT                  = 0x10
+	TIOCFLAG_CDTRCTS          = 0x10
+	TIOCFLAG_CLOCAL           = 0x02
+	TIOCFLAG_CRTSCTS          = 0x04
+	TIOCFLAG_MDMBUF           = 0x08
+	TIOCFLAG_SOFTCAR          = 0x01
+	TIOCM_CAR                 = 0100
+	TIOCM_CD                  = 64
+	TIOCM_CTS                 = 0040
+	TIOCM_DSR                 = 0400
+	TIOCM_DTR                 = 0002
+	TIOCM_LE                  = 0001
+	TIOCM_RI                  = 128
+	TIOCM_RNG                 = 0200
+	TIOCM_RTS                 = 0004
+	TIOCM_SR                  = 0020
+	TIOCM_ST                  = 0010
+	TIOCPKT_DATA              = 0x00
+	TIOCPKT_DOSTOP            = 0x20
+	TIOCPKT_FLUSHREAD         = 0x01
+	TIOCPKT_FLUSHWRITE        = 0x02
+	TIOCPKT_IOCTL             = 0x40
+	TIOCPKT_NOSTOP            = 0x10
+	TIOCPKT_START             = 0x08
+	TIOCPKT_STOP              = 0x04
+	TOSTOP                    = 0x00400000
+	TTLINEDNAMELEN            = 32
+	TTYDEF_CFLAG              = 19200
+	TTYDEF_IFLAG              = 11010
+	TTYDEF_LFLAG              = 1483
+	TTYDEF_OFLAG              = 7
+	TTYDEF_SPEED              = 9600
+	TTYDISC                   = 0
+	UID_MAX                   = 2147483647
+	VDISCARD                  = 15
+	VDSUSP                    = 11
+	VEOF                      = 0
+	VEOL                      = 1
+	VEOL2                     = 2
+	VERASE                    = 3
+	VINTR                     = 8
+	VKILL                     = 5
+	VLNEXT                    = 14
+	VMIN                      = 16
+	VQUIT                     = 9
+	VREPRINT                  = 6
+	VSTART                    = 12
+	VSTATUS                   = 18
+	VSTOP                     = 13
+	VSUSP                     = 10
+	VTIME                     = 17
+	VWERASE                   = 4
+	X_AMD64_INT_TYPES_H_      = 0
+	X_FILE_OFFSET_BITS        = 64
+	X_LP64                    = 1
+	X_NETBSD_SOURCE           = 1
+	X_NETBSD_SYS_TTYCOM_H_    = 0
+	X_PATH_PTMDEV             = "/dev/ptm"
+	X_POSIX_SYS_TTYCOM_H_     = 0
+	X_SYS_ANSI_H_             = 0
+	X_SYS_CDEFS_ELF_H_        = 0
+	X_SYS_CDEFS_H_            = 0
+	X_SYS_COMMON_ANSI_H_      = 0
+	X_SYS_COMMON_INT_TYPES_H_ = 0
+	X_SYS_IOCCOM_H_           = 0
+	X_SYS_SYSLIMITS_H_        = 0
+	X_SYS_TERMIOS_H_          = 0
+	X_SYS_TTYDEFAULTS_H_      = 0
+	X_X86_64_CDEFS_H_         = 0
+)
+
+type Ptrdiff_t = int64 /* <builtin>:3:26 */
+
+type Size_t = uint64 /* <builtin>:9:23 */
+
+type Wchar_t = int32 /* <builtin>:15:24 */
+
+type X__int128_t = struct {
+	Flo int64
+	Fhi int64
+} /* <builtin>:21:43 */ // must match modernc.org/mathutil.Int128
+type X__uint128_t = struct {
+	Flo uint64
+	Fhi uint64
+} /* <builtin>:22:44 */ // must match modernc.org/mathutil.Int128
+
+type X__builtin_va_list = uintptr /* <builtin>:46:14 */
+type X__float128 = float64        /* <builtin>:47:21 */
+
+// return true if value 'a' fits in type 't'
+
+//	$NetBSD: int_types.h,v 1.7 2014/07/25 21:43:13 joerg Exp $
+
+// -
+// Copyright (c) 1990 The Regents of the University of California.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	from: @(#)types.h	7.5 (Berkeley) 3/9/91
+
+//	$NetBSD: common_int_types.h,v 1.1 2014/07/25 21:43:13 joerg Exp $
+
+// -
+// Copyright (c) 2014 The NetBSD Foundation, Inc.
+// All rights reserved.
+//
+// This code is derived from software contributed to The NetBSD Foundation
+// by Joerg Sonnenberger.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+// ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+// PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+// BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+
+// 7.18.1 Integer types
+
+// 7.18.1.1 Exact-width integer types
+
+type X__int8_t = int8     /* common_int_types.h:45:27 */
+type X__uint8_t = uint8   /* common_int_types.h:46:27 */
+type X__int16_t = int16   /* common_int_types.h:47:27 */
+type X__uint16_t = uint16 /* common_int_types.h:48:27 */
+type X__int32_t = int32   /* common_int_types.h:49:27 */
+type X__uint32_t = uint32 /* common_int_types.h:50:27 */
+type X__int64_t = int64   /* common_int_types.h:51:27 */
+type X__uint64_t = uint64 /* common_int_types.h:52:27 */
+
+// 7.18.1.4 Integer types capable of holding object pointers
+
+type X__intptr_t = int64   /* common_int_types.h:58:27 */
+type X__uintptr_t = uint64 /* common_int_types.h:59:26 */
+
+// Types which are fundamental to the implementation and may appear in
+// more than one standard header are defined here.  Standard headers
+// then use:
+//	#ifdef	_BSD_SIZE_T_
+//	typedef	_BSD_SIZE_T_ size_t;
+//	#undef	_BSD_SIZE_T_
+//	#endif
+
+type X__caddr_t = uintptr        /* ansi.h:37:14 */ // core address
+type X__gid_t = X__uint32_t      /* ansi.h:38:20 */ // group id
+type X__in_addr_t = X__uint32_t  /* ansi.h:39:20 */ // IP(v4) address
+type X__in_port_t = X__uint16_t  /* ansi.h:40:20 */ // "Internet" port number
+type X__mode_t = X__uint32_t     /* ansi.h:41:20 */ // file permissions
+type X__off_t = X__int64_t       /* ansi.h:42:19 */ // file offset
+type X__pid_t = X__int32_t       /* ansi.h:43:19 */ // process id
+type X__sa_family_t = X__uint8_t /* ansi.h:44:19 */ // socket address family
+type X__socklen_t = uint32       /* ansi.h:45:22 */ // socket-related datum length
+type X__uid_t = X__uint32_t      /* ansi.h:46:20 */ // user id
+type X__fsblkcnt_t = X__uint64_t /* ansi.h:47:20 */ // fs block count (statvfs)
+type X__fsfilcnt_t = X__uint64_t /* ansi.h:48:20 */
+type X__wctrans_t = uintptr      /* ansi.h:51:32 */
+type X__wctype_t = uintptr       /* ansi.h:54:31 */
+
+// mbstate_t is an opaque object to keep conversion state, during multibyte
+// stream conversions.  The content must not be referenced by user programs.
+type X__mbstate_t = struct {
+	F__mbstateL  X__int64_t
+	F__ccgo_pad1 [120]byte
+} /* ansi.h:63:3 */
+
+type X__va_list = X__builtin_va_list /* ansi.h:72:27 */
+
+//	$NetBSD: featuretest.h,v 1.10 2013/04/26 18:29:06 christos Exp $
+
+// Written by Klaus Klein <kleink@NetBSD.org>, February 2, 1998.
+// Public domain.
+//
+// NOTE: Do not protect this header against multiple inclusion.  Doing
+// so can have subtle side-effects due to header file inclusion order
+// and testing of e.g. _POSIX_SOURCE vs. _POSIX_C_SOURCE.  Instead,
+// protect each CPP macro that we want to supply.
+
+// Feature-test macros are defined by several standards, and allow an
+// application to specify what symbols they want the system headers to
+// expose, and hence what standard they want them to conform to.
+// There are two classes of feature-test macros.  The first class
+// specify complete standards, and if one of these is defined, header
+// files will try to conform to the relevant standard.  They are:
+//
+// ANSI macros:
+// _ANSI_SOURCE			ANSI C89
+//
+// POSIX macros:
+// _POSIX_SOURCE == 1		IEEE Std 1003.1 (version?)
+// _POSIX_C_SOURCE == 1		IEEE Std 1003.1-1990
+// _POSIX_C_SOURCE == 2		IEEE Std 1003.2-1992
+// _POSIX_C_SOURCE == 199309L	IEEE Std 1003.1b-1993
+// _POSIX_C_SOURCE == 199506L	ISO/IEC 9945-1:1996
+// _POSIX_C_SOURCE == 200112L	IEEE Std 1003.1-2001
+// _POSIX_C_SOURCE == 200809L   IEEE Std 1003.1-2008
+//
+// X/Open macros:
+// _XOPEN_SOURCE		System Interfaces and Headers, Issue 4, Ver 2
+// _XOPEN_SOURCE_EXTENDED == 1	XSH4.2 UNIX extensions
+// _XOPEN_SOURCE == 500		System Interfaces and Headers, Issue 5
+// _XOPEN_SOURCE == 520		Networking Services (XNS), Issue 5.2
+// _XOPEN_SOURCE == 600		IEEE Std 1003.1-2001, XSI option
+// _XOPEN_SOURCE == 700		IEEE Std 1003.1-2008, XSI option
+//
+// NetBSD macros:
+// _NETBSD_SOURCE == 1		Make all NetBSD features available.
+//
+// If more than one of these "major" feature-test macros is defined,
+// then the set of facilities provided (and namespace used) is the
+// union of that specified by the relevant standards, and in case of
+// conflict, the earlier standard in the above list has precedence (so
+// if both _POSIX_C_SOURCE and _NETBSD_SOURCE are defined, the version
+// of rename() that's used is the POSIX one).  If none of the "major"
+// feature-test macros is defined, _NETBSD_SOURCE is assumed.
+//
+// There are also "minor" feature-test macros, which enable extra
+// functionality in addition to some base standard.  They should be
+// defined along with one of the "major" macros.  The "minor" macros
+// are:
+//
+// _REENTRANT
+// _ISOC99_SOURCE
+// _ISOC11_SOURCE
+// _LARGEFILE_SOURCE		Large File Support
+//		<http://ftp.sas.com/standards/large.file/x_open.20Mar96.html>
+
+// Special Control Characters
+//
+// Index into c_cc[] character array.
+//
+//	Name	     Subscript	Enabled by
+//			7	   spare 1
+//			19	   spare 2
+
+// Input flags - software input processing
+
+// Output flags - software output processing
+
+// Control flags - hardware control of terminal
+
+// "Local" flags - dumping ground for other state
+//
+// Warning: some flags in this structure begin with
+// the letter "I" and look like they belong in the
+// input flag.
+
+type Tcflag_t = uint32 /* termios.h:188:22 */
+type Cc_t = uint8      /* termios.h:189:23 */
+type Speed_t = uint32  /* termios.h:190:22 */
+
+type Termios = struct {
+	Fc_iflag  Tcflag_t
+	Fc_oflag  Tcflag_t
+	Fc_cflag  Tcflag_t
+	Fc_lflag  Tcflag_t
+	Fc_cc     [20]Cc_t
+	Fc_ispeed int32
+	Fc_ospeed int32
+} /* termios.h:192:1 */
+
+// Commands passed to tcsetattr() for setting the termios structure.
+
+// Standard speeds
+
+type Pid_t = X__pid_t /* termios.h:265:18 */
+
+// Include tty ioctl's that aren't just for backwards compatibility
+// with the old tty driver.  These ioctl definitions were previously
+// in <sys/ioctl.h>.   Most of this appears only when _NETBSD_SOURCE
+// is defined, but (at least) struct winsize has been made standard,
+// and needs to be visible here (as well as via the old <sys/ioctl.h>.)
+//	$NetBSD: ttycom.h,v 1.21 2017/10/25 06:32:59 kre Exp $
+
+// -
+// Copyright (c) 1982, 1986, 1990, 1993, 1994
+//	The Regents of the University of California.  All rights reserved.
+// (c) UNIX System Laboratories, Inc.
+// All or some portions of this file are derived from material licensed
+// to the University of California by American Telephone and Telegraph
+// Co. or Unix System Laboratories, Inc. and are reproduced herein with
+// the permission of UNIX System Laboratories, Inc.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)ttycom.h	8.1 (Berkeley) 3/28/94
+
+//	$NetBSD: syslimits.h,v 1.28 2015/08/21 07:19:39 uebayasi Exp $
+
+// Copyright (c) 1988, 1993
+//	The Regents of the University of California.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)syslimits.h	8.1 (Berkeley) 6/2/93
+
+//	$NetBSD: featuretest.h,v 1.10 2013/04/26 18:29:06 christos Exp $
+
+// Written by Klaus Klein <kleink@NetBSD.org>, February 2, 1998.
+// Public domain.
+//
+// NOTE: Do not protect this header against multiple inclusion.  Doing
+// so can have subtle side-effects due to header file inclusion order
+// and testing of e.g. _POSIX_SOURCE vs. _POSIX_C_SOURCE.  Instead,
+// protect each CPP macro that we want to supply.
+
+// Feature-test macros are defined by several standards, and allow an
+// application to specify what symbols they want the system headers to
+// expose, and hence what standard they want them to conform to.
+// There are two classes of feature-test macros.  The first class
+// specify complete standards, and if one of these is defined, header
+// files will try to conform to the relevant standard.  They are:
+//
+// ANSI macros:
+// _ANSI_SOURCE			ANSI C89
+//
+// POSIX macros:
+// _POSIX_SOURCE == 1		IEEE Std 1003.1 (version?)
+// _POSIX_C_SOURCE == 1		IEEE Std 1003.1-1990
+// _POSIX_C_SOURCE == 2		IEEE Std 1003.2-1992
+// _POSIX_C_SOURCE == 199309L	IEEE Std 1003.1b-1993
+// _POSIX_C_SOURCE == 199506L	ISO/IEC 9945-1:1996
+// _POSIX_C_SOURCE == 200112L	IEEE Std 1003.1-2001
+// _POSIX_C_SOURCE == 200809L   IEEE Std 1003.1-2008
+//
+// X/Open macros:
+// _XOPEN_SOURCE		System Interfaces and Headers, Issue 4, Ver 2
+// _XOPEN_SOURCE_EXTENDED == 1	XSH4.2 UNIX extensions
+// _XOPEN_SOURCE == 500		System Interfaces and Headers, Issue 5
+// _XOPEN_SOURCE == 520		Networking Services (XNS), Issue 5.2
+// _XOPEN_SOURCE == 600		IEEE Std 1003.1-2001, XSI option
+// _XOPEN_SOURCE == 700		IEEE Std 1003.1-2008, XSI option
+//
+// NetBSD macros:
+// _NETBSD_SOURCE == 1		Make all NetBSD features available.
+//
+// If more than one of these "major" feature-test macros is defined,
+// then the set of facilities provided (and namespace used) is the
+// union of that specified by the relevant standards, and in case of
+// conflict, the earlier standard in the above list has precedence (so
+// if both _POSIX_C_SOURCE and _NETBSD_SOURCE are defined, the version
+// of rename() that's used is the POSIX one).  If none of the "major"
+// feature-test macros is defined, _NETBSD_SOURCE is assumed.
+//
+// There are also "minor" feature-test macros, which enable extra
+// functionality in addition to some base standard.  They should be
+// defined along with one of the "major" macros.  The "minor" macros
+// are:
+//
+// _REENTRANT
+// _ISOC99_SOURCE
+// _ISOC11_SOURCE
+// _LARGEFILE_SOURCE		Large File Support
+//		<http://ftp.sas.com/standards/large.file/x_open.20Mar96.html>
+
+// kept in sync with MAXNAMLEN
+
+// IEEE Std 1003.1c-95, adopted in X/Open CAE Specification Issue 5 Version 2
+
+// X/Open CAE Specification Issue 5 Version 2
+
+//	$NetBSD: ioccom.h,v 1.13 2019/05/26 10:21:33 hannken Exp $
+
+// -
+// Copyright (c) 1982, 1986, 1990, 1993, 1994
+//	The Regents of the University of California.  All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)ioccom.h	8.3 (Berkeley) 1/9/95
+
+// Ioctl's have the command encoded in the lower word, and the size of
+// any in or out parameters in the upper word.  The high 3 bits of the
+// upper word are used to encode the in/out status of the parameter.
+//
+//	 31 29 28                     16 15            8 7             0
+//	+---------------------------------------------------------------+
+//	| I/O | Parameter Length        | Command Group | Command       |
+//	+---------------------------------------------------------------+
+
+// no parameters
+// copy parameters out
+// copy parameters in
+// copy parameters in and out
+// mask for IN/OUT/VOID
+
+// this should be _IORW, but stdio got there first
+
+// Tty ioctl's except for those supported only for backwards compatibility
+// with the old tty driver.
+
+// Window/terminal size structure.  This information is stored by the kernel
+// in order to provide a consistent interface, but is not used by the kernel.
+type Winsize = struct {
+	Fws_row    uint16
+	Fws_col    uint16
+	Fws_xpixel uint16
+	Fws_ypixel uint16
+} /* ttycom.h:54:1 */
+
+// The following are not exposed when imported via <termios.h>
+// when _POSIX_SOURCE (et.al.) is defined (and hence _NETBSD_SOURCE
+// is not, unless that is added manually.)
+
+// ptmget, for /dev/ptm pty getting ioctl TIOCPTMGET, and for TIOCPTSNAME
+type Ptmget = struct {
+	Fcfd int32
+	Fsfd int32
+	Fcn  [1024]int8
+	Fsn  [1024]int8
+} /* ttycom.h:74:1 */
+
+// 8-10 compat
+// 15 unused
+// 17-18 compat
+
+// This is the maximum length of a line discipline's name.
+type Linedn_t = [32]int8 /* ttycom.h:111:14 */
+
+// END OF PROTECTED INCLUDE.
+
+//	$NetBSD: ttydefaults.h,v 1.16 2008/05/24 14:06:39 yamt Exp $
+
+// -
+// Copyright (c) 1982, 1986, 1993
+//	The Regents of the University of California.  All rights reserved.
+// (c) UNIX System Laboratories, Inc.
+// All or some portions of this file are derived from material licensed
+// to the University of California by American Telephone and Telegraph
+// Co. or Unix System Laboratories, Inc. and are reproduced herein with
+// the permission of UNIX System Laboratories, Inc.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1. Redistributions of source code must retain the above copyright
+//    notice, this list of conditions and the following disclaimer.
+// 2. Redistributions in binary form must reproduce the above copyright
+//    notice, this list of conditions and the following disclaimer in the
+//    documentation and/or other materials provided with the distribution.
+// 3. Neither the name of the University nor the names of its contributors
+//    may be used to endorse or promote products derived from this software
+//    without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+// OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+// OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+// SUCH DAMAGE.
+//
+//	@(#)ttydefaults.h	8.4 (Berkeley) 1/21/94
+
+// System wide defaults for terminal state.
+
+// Defaults on "first" open.
+
+// Control Character Defaults
+// compat
+
+// PROTECTED INCLUSION ENDS HERE
+
+// #define TTYDEFCHARS to include an array of default control characters.
+var _ int8 /* gen.c:2:13: */