Update dependencies (#333)

17 files changed, 547 insertions, 90 deletions

diff --git a/vendor/modernc.org/libc/poll/capi_darwin_amd64.go b/vendor/modernc.org/libc/poll/capi_darwin_amd64.go
index d30e8f987..2589fc07f 100644
--- a/vendor/modernc.org/libc/poll/capi_darwin_amd64.go
+++ b/vendor/modernc.org/libc/poll/capi_darwin_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_darwin_amd64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_darwin_amd64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_darwin_arm64.go b/vendor/modernc.org/libc/poll/capi_darwin_arm64.go
index 7f2222285..b5e9cffdb 100644
--- a/vendor/modernc.org/libc/poll/capi_darwin_arm64.go
+++ b/vendor/modernc.org/libc/poll/capi_darwin_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_darwin_arm64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_darwin_arm64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_linux_386.go b/vendor/modernc.org/libc/poll/capi_linux_386.go
index 1419ab870..e97704391 100644
--- a/vendor/modernc.org/libc/poll/capi_linux_386.go
+++ b/vendor/modernc.org/libc/poll/capi_linux_386.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_386.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_386.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_linux_amd64.go b/vendor/modernc.org/libc/poll/capi_linux_amd64.go
index c1852edb6..d59907927 100644
--- a/vendor/modernc.org/libc/poll/capi_linux_amd64.go
+++ b/vendor/modernc.org/libc/poll/capi_linux_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_amd64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_amd64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_linux_arm.go b/vendor/modernc.org/libc/poll/capi_linux_arm.go
index 7a022a47d..4c5370743 100644
--- a/vendor/modernc.org/libc/poll/capi_linux_arm.go
+++ b/vendor/modernc.org/libc/poll/capi_linux_arm.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_arm.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_arm.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_linux_arm64.go b/vendor/modernc.org/libc/poll/capi_linux_arm64.go
index 16504bafa..9035dda65 100644
--- a/vendor/modernc.org/libc/poll/capi_linux_arm64.go
+++ b/vendor/modernc.org/libc/poll/capi_linux_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_arm64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_arm64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_linux_s390x.go b/vendor/modernc.org/libc/poll/capi_linux_s390x.go
index a3a1e9ea9..36ce787ef 100644
--- a/vendor/modernc.org/libc/poll/capi_linux_s390x.go
+++ b/vendor/modernc.org/libc/poll/capi_linux_s390x.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path  -export-defines  -export-enums  -export-externs X -export-fields F -export-structs  -export-typedefs  -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_s390x.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_s390x.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/capi_netbsd_amd64.go b/vendor/modernc.org/libc/poll/capi_netbsd_amd64.go
new file mode 100644
index 000000000..1f0d73f7b
--- /dev/null
+++ b/vendor/modernc.org/libc/poll/capi_netbsd_amd64.go
@@ -0,0 +1,5 @@
+// Code generated by 'ccgo poll/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 poll/poll_netbsd_amd64.go -pkgname poll', DO NOT EDIT.
+
+package poll
+
+var CAPI = map[string]struct{}{}
diff --git a/vendor/modernc.org/libc/poll/poll_darwin_amd64.go b/vendor/modernc.org/libc/poll/poll_darwin_amd64.go
index 87ec19a99..08f1916a8 100644
--- a/vendor/modernc.org/libc/poll/poll_darwin_amd64.go
+++ b/vendor/modernc.org/libc/poll/poll_darwin_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_darwin_amd64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_darwin_amd64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/poll_darwin_arm64.go b/vendor/modernc.org/libc/poll/poll_darwin_arm64.go
index f571df9fa..30ae157ba 100644
--- a/vendor/modernc.org/libc/poll/poll_darwin_arm64.go
+++ b/vendor/modernc.org/libc/poll/poll_darwin_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_darwin_arm64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_darwin_arm64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
diff --git a/vendor/modernc.org/libc/poll/poll_freebsd_amd64.go b/vendor/modernc.org/libc/poll/poll_freebsd_amd64.go
index ab3cd770e..38327a13e 100644
--- a/vendor/modernc.org/libc/poll/poll_freebsd_amd64.go
+++ b/vendor/modernc.org/libc/poll/poll_freebsd_amd64.go
@@ -624,8 +624,8 @@ 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/poll/poll_linux_386.go b/vendor/modernc.org/libc/poll/poll_linux_386.go
index c1da8ea3e..f19a26388 100644
--- a/vendor/modernc.org/libc/poll/poll_linux_386.go
+++ b/vendor/modernc.org/libc/poll/poll_linux_386.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_386.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_386.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
@@ -29,6 +29,7 @@ const (
 	X_DEFAULT_SOURCE   = 1
 	X_FEATURES_H       = 1
 	X_FILE_OFFSET_BITS = 64
+	X_ILP32            = 1
 	X_POSIX_C_SOURCE   = 200809
 	X_POSIX_SOURCE     = 1
 	X_STDC_PREDEF_H    = 1
@@ -49,7 +50,7 @@ type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
 // Compatibility definitions for System V `poll' interface.
-//    Copyright (C) 1994-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1994-2020 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
@@ -64,9 +65,9 @@ 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) 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
@@ -81,7 +82,7 @@ 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:
@@ -89,6 +90,7 @@ 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__
@@ -209,6 +211,8 @@ 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.
@@ -231,9 +235,22 @@ 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
@@ -248,7 +265,7 @@ 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
@@ -261,7 +278,7 @@ 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
@@ -276,7 +293,7 @@ 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.
 
@@ -391,7 +408,7 @@ 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
@@ -412,10 +429,14 @@ 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
@@ -430,7 +451,7 @@ 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.
@@ -468,7 +489,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    every time called, usually setting errno to ENOSYS.
 
 // Get the platform dependent bits of `poll'.
-// Copyright (C) 1997-2018 Free Software Foundation, Inc.
+// Copyright (C) 1997-2020 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
@@ -483,7 +504,7 @@ 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/>.
 
 // Event types that can be polled for.  These bits may be set in `events'
 //    to indicate the interesting event types; they will appear in `revents'
diff --git a/vendor/modernc.org/libc/poll/poll_linux_amd64.go b/vendor/modernc.org/libc/poll/poll_linux_amd64.go
index cf88eb46c..104c76d60 100644
--- a/vendor/modernc.org/libc/poll/poll_linux_amd64.go
+++ b/vendor/modernc.org/libc/poll/poll_linux_amd64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_amd64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_amd64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
@@ -58,7 +58,7 @@ type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
 // Compatibility definitions for System V `poll' interface.
-//    Copyright (C) 1994-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1994-2020 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
@@ -73,9 +73,9 @@ 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) 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
@@ -90,7 +90,7 @@ 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:
@@ -98,6 +98,7 @@ 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__
@@ -218,6 +219,8 @@ 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.
@@ -240,9 +243,22 @@ 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
@@ -257,7 +273,7 @@ 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
@@ -270,7 +286,7 @@ 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
@@ -285,7 +301,7 @@ 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.
 
@@ -400,7 +416,7 @@ 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
@@ -421,11 +437,15 @@ 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
@@ -440,7 +460,7 @@ 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.
@@ -478,7 +498,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    every time called, usually setting errno to ENOSYS.
 
 // Get the platform dependent bits of `poll'.
-// Copyright (C) 1997-2018 Free Software Foundation, Inc.
+// Copyright (C) 1997-2020 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
@@ -493,7 +513,7 @@ 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/>.
 
 // Event types that can be polled for.  These bits may be set in `events'
 //    to indicate the interesting event types; they will appear in `revents'
diff --git a/vendor/modernc.org/libc/poll/poll_linux_arm.go b/vendor/modernc.org/libc/poll/poll_linux_arm.go
index 18213f026..ea5de1cda 100644
--- a/vendor/modernc.org/libc/poll/poll_linux_arm.go
+++ b/vendor/modernc.org/libc/poll/poll_linux_arm.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_arm.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_arm.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
@@ -48,7 +48,7 @@ type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
 // Compatibility definitions for System V `poll' interface.
-//    Copyright (C) 1994-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1994-2020 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
@@ -63,9 +63,9 @@ 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) 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
@@ -80,7 +80,7 @@ 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:
@@ -88,6 +88,7 @@ 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__
@@ -208,6 +209,8 @@ 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.
@@ -230,9 +233,22 @@ 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
@@ -247,7 +263,7 @@ 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
@@ -260,7 +276,7 @@ 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
@@ -275,7 +291,7 @@ 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.
 
@@ -390,7 +406,7 @@ 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
@@ -411,7 +427,11 @@ 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
@@ -426,10 +446,10 @@ 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
@@ -444,7 +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/>.
 
 // This header is included by <sys/cdefs.h>.
 //
@@ -498,7 +518,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    every time called, usually setting errno to ENOSYS.
 
 // Get the platform dependent bits of `poll'.
-// Copyright (C) 1997-2018 Free Software Foundation, Inc.
+// Copyright (C) 1997-2020 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
@@ -513,7 +533,7 @@ 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/>.
 
 // Event types that can be polled for.  These bits may be set in `events'
 //    to indicate the interesting event types; they will appear in `revents'
@@ -537,4 +557,4 @@ type Pollfd = struct {
 
 // Define some inlines helping to catch common problems.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/poll/poll_linux_arm64.go b/vendor/modernc.org/libc/poll/poll_linux_arm64.go
index e895ad08f..304256793 100644
--- a/vendor/modernc.org/libc/poll/poll_linux_arm64.go
+++ b/vendor/modernc.org/libc/poll/poll_linux_arm64.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_arm64.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_arm64.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
@@ -58,7 +58,7 @@ type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
 // Compatibility definitions for System V `poll' interface.
-//    Copyright (C) 1994-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1994-2020 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
@@ -73,9 +73,9 @@ 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) 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
@@ -90,7 +90,7 @@ 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:
@@ -98,6 +98,7 @@ 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__
@@ -218,6 +219,8 @@ 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.
@@ -240,9 +243,22 @@ 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
@@ -257,7 +273,7 @@ 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
@@ -270,7 +286,7 @@ 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
@@ -285,7 +301,7 @@ 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.
 
@@ -400,7 +416,7 @@ 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
@@ -421,9 +437,13 @@ 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
@@ -438,10 +458,10 @@ 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
@@ -456,7 +476,7 @@ 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.
@@ -490,7 +510,7 @@ 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
@@ -505,7 +525,7 @@ 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
@@ -513,7 +533,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    every time called, usually setting errno to ENOSYS.
 
 // Get the platform dependent bits of `poll'.
-// Copyright (C) 1997-2018 Free Software Foundation, Inc.
+// Copyright (C) 1997-2020 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
@@ -528,7 +548,7 @@ 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/>.
 
 // Event types that can be polled for.  These bits may be set in `events'
 //    to indicate the interesting event types; they will appear in `revents'
@@ -552,4 +572,4 @@ type Pollfd = struct {
 
 // Define some inlines helping to catch common problems.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/poll/poll_linux_s390x.go b/vendor/modernc.org/libc/poll/poll_linux_s390x.go
index 29ad3d573..68ab3af60 100644
--- a/vendor/modernc.org/libc/poll/poll_linux_s390x.go
+++ b/vendor/modernc.org/libc/poll/poll_linux_s390x.go
@@ -1,4 +1,4 @@
-// Code generated by 'ccgo poll/gen.c -crt-import-path "" -export-defines "" -export-enums "" -export-externs X -export-fields F -export-structs "" -export-typedefs "" -hide _OSSwapInt16,_OSSwapInt32,_OSSwapInt64 -o poll/poll_linux_s390x.go -pkgname poll', DO NOT EDIT.
+// Code generated by 'ccgo poll/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 poll/poll_linux_s390x.go -pkgname poll', DO NOT EDIT.
 
 package poll
 
@@ -58,7 +58,7 @@ type X__builtin_va_list = uintptr /* <builtin>:46:14 */
 type X__float128 = float64        /* <builtin>:47:21 */
 
 // Compatibility definitions for System V `poll' interface.
-//    Copyright (C) 1994-2018 Free Software Foundation, Inc.
+//    Copyright (C) 1994-2020 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
@@ -73,9 +73,9 @@ 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) 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
@@ -90,7 +90,7 @@ 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:
@@ -98,6 +98,7 @@ 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__
@@ -218,6 +219,8 @@ 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.
@@ -240,9 +243,22 @@ 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
@@ -257,7 +273,7 @@ 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
@@ -270,7 +286,7 @@ 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
@@ -285,7 +301,7 @@ 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.
 
@@ -400,7 +416,7 @@ 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
@@ -421,10 +437,14 @@ 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
@@ -439,7 +459,7 @@ 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.
@@ -476,7 +496,7 @@ type X__float128 = float64        /* <builtin>:47:21 */
 //    every time called, usually setting errno to ENOSYS.
 
 // Get the platform dependent bits of `poll'.
-// Copyright (C) 1997-2018 Free Software Foundation, Inc.
+// Copyright (C) 1997-2020 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
@@ -491,7 +511,7 @@ 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/>.
 
 // Event types that can be polled for.  These bits may be set in `events'
 //    to indicate the interesting event types; they will appear in `revents'
@@ -515,4 +535,4 @@ type Pollfd = struct {
 
 // Define some inlines helping to catch common problems.
 
-var _ int8 /* gen.c:2:13: */
+var _ uint8 /* gen.c:2:13: */
diff --git a/vendor/modernc.org/libc/poll/poll_netbsd_amd64.go b/vendor/modernc.org/libc/poll/poll_netbsd_amd64.go
new file mode 100644
index 000000000..727df0165
--- /dev/null
+++ b/vendor/modernc.org/libc/poll/poll_netbsd_amd64.go
@@ -0,0 +1,351 @@
+// Code generated by 'ccgo poll/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 poll/poll_netbsd_amd64.go -pkgname poll', DO NOT EDIT.
+
+package poll
+
+import (
+	"math"
+	"reflect"
+	"sync/atomic"
+	"unsafe"
+)
+
+var _ = math.Pi
+var _ reflect.Kind
+var _ atomic.Value
+var _ unsafe.Pointer
+
+const (
+	INFTIM                    = -1
+	POLLERR                   = 0x0008
+	POLLHUP                   = 0x0010
+	POLLIN                    = 0x0001
+	POLLNVAL                  = 0x0020
+	POLLOUT                   = 0x0004
+	POLLPRI                   = 0x0002
+	POLLRDBAND                = 0x0080
+	POLLRDNORM                = 0x0040
+	POLLWRBAND                = 0x0100
+	POLLWRNORM                = 4
+	X_AMD64_INT_TYPES_H_      = 0
+	X_FILE_OFFSET_BITS        = 64
+	X_LP64                    = 1
+	X_NETBSD_SOURCE           = 1
+	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_POLL_H_             = 0
+	X_SYS_SIGTYPES_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 */
+
+//	$NetBSD: poll.h,v 1.15 2009/11/11 09:48:51 rmind Exp $
+
+// -
+// Copyright (c) 1998 The NetBSD Foundation, Inc.
+// All rights reserved.
+//
+// This code is derived from software contributed to The NetBSD Foundation
+// by Charles M. Hannum.
+//
+// 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.
+
+//	$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>
+
+type Nfds_t = uint32 /* poll.h:37:22 */
+
+type Pollfd = struct {
+	Ffd      int32
+	Fevents  int16
+	Frevents int16
+} /* poll.h:39:1 */
+
+//	$NetBSD: sigtypes.h,v 1.11 2017/01/12 18:29:14 christos Exp $
+
+// Copyright (c) 1982, 1986, 1989, 1991, 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.
+//
+//	@(#)signal.h	8.4 (Berkeley) 5/4/95
+
+// This header file defines various signal-related types.  We also keep
+// the macros to manipulate sigset_t here, to encapsulate knowledge of
+// its internals.
+
+//	$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>
+
+//	$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 */
+
+type Sigset_t = struct{ F__bits [4]X__uint32_t } /* sigtypes.h:62:3 */
+
+// Macro for manipulating signal masks.
+
+type Sigaltstack = struct {
+	Fss_sp       uintptr
+	Fss_size     Size_t
+	Fss_flags    int32
+	F__ccgo_pad1 [4]byte
+} /* sigtypes.h:108:9 */
+
+// Macro for manipulating signal masks.
+
+type Stack_t = Sigaltstack /* sigtypes.h:116:3 */
+
+var _ int8 /* gen.c:2:13: */