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authorRamsay Jones <ramsay@ramsay1.demon.co.uk>2013-04-27 19:46:17 +0100
committerJunio C Hamano <gitster@pobox.com>2013-04-28 12:26:09 -0700
commiteec7fd8bc54eacf96d0988741a0d988f374c4db9 (patch)
tree77d4694255f8560ccc16054200cfb352fbfcbecf /compat
parent241c957d899fe829bf5754e8589e357ce9496783 (diff)
downloadgit-eec7fd8bc54eacf96d0988741a0d988f374c4db9.tar.gz
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.h4
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