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| author |  Ramsay Jones <ramsay@ramsay1.demon.co.uk> | 2013-04-27 19:46:17 +0100 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2013-04-28 12:26:09 -0700 |
| commit | eec7fd8bc54eacf96d0988741a0d988f374c4db9 (patch) | |
| tree | 77d4694255f8560ccc16054200cfb352fbfcbecf /compat | |
| parent | compat/nedmalloc: Fix some sparse warnings (diff) | |
| download | tgif-eec7fd8bc54eacf96d0988741a0d988f374c4db9.tar.xz | |
compat/nedmalloc: Fix compiler warnings on linux
On linux, when the build variable USE_NED_ALLOCATOR is set, gcc
issues the following warnings:
In file included from compat/nedmalloc/nedmalloc.c:63:
.../malloc.c.h: In function 'mmap_resize':
.../malloc.c.h:3762: warning: implicit declaration of function 'mremap'
.../malloc.c.h: In function 'sys_trim':
.../malloc.c.h:4195: warning: comparison between pointer and integer
The warnings are caused by the <sys/mman.h> header not enabling the
(conditional) declaration of the mremap() function. The declaration
can be enabled by defining the _GNU_SOURCE symbol prior to including
certain system header files. In particular, it may not be sufficient
to simply define _GNU_SOURCE just prior to including the <sys/mman.h>
header. (e.g. defining the symbol after including <sys/types.h> will
be completely ineffective.)
In order to suppress the warnings, we define the _GNU_SOURCE symbol
at the start of the malloc.c.h header file.
Signed-off-by: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'compat')
| -rw-r--r-- | compat/nedmalloc/malloc.c.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compat/nedmalloc/malloc.c.h b/compat/nedmalloc/malloc.c.h index fdcca82ba7..5a44dead9d 100644 --- a/compat/nedmalloc/malloc.c.h +++ b/compat/nedmalloc/malloc.c.h @@ -484,6 +484,10 @@ MAX_RELEASE_CHECK_RATE default: 4095 unless not HAVE_MMAP #define DLMALLOC_VERSION 20804 #endif /* DLMALLOC_VERSION */ +#if defined(linux) +#define _GNU_SOURCE 1 +#endif + #ifndef WIN32 #ifdef _WIN32 #define WIN32 1 |