diff options
| author | René Scharfe <l.s.r@web.de> | 2016-09-03 17:59:15 +0200 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2016-09-07 10:41:45 -0700 |
| commit | ca2baa3f7532dfe1816b623f39489ed10f3c9a49 (patch) | |
| tree | 4422885a6aa8511f04adedfbedc71c8599ad932e | |
| parent | e0c1ceafc5bece92d35773a75fff59497e1d9bd5 (diff) | |
| download | git-rs/compat-strdup.tar.gz | |
compat: move strdup(3) replacement to its own filers/compat-strdup
Move our implementation of strdup(3) out of compat/nedmalloc/ and
allow it to be used independently from USE_NED_ALLOCATOR. The
original nedmalloc doesn't come with strdup() and doesn't need it.
Only _users_ of nedmalloc need it, which was added when we imported
it to our compat/ hierarchy.
This reduces the difference of our copy of nedmalloc from the
original, making it easier to update, and allows for easier testing
and reusing of our version of strdup().
Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | Makefile | 17 | ||||
| -rw-r--r-- | compat/nedmalloc/nedmalloc.c | 16 | ||||
| -rw-r--r-- | compat/strdup.c | 11 | ||||
| -rw-r--r-- | git-compat-util.h | 8 |
4 files changed, 33 insertions, 19 deletions
@@ -296,6 +296,11 @@ all:: # Define USE_NED_ALLOCATOR if you want to replace the platforms default # memory allocators with the nedmalloc allocator written by Niall Douglas. # +# Define OVERRIDE_STRDUP to override the libc version of strdup(3). +# This is necessary when using a custom allocator in order to avoid +# crashes due to allocation and free working on different 'heaps'. +# It's defined automatically if USE_NED_ALLOCATOR is set. +# # Define NO_REGEX if you have no or inferior regex support in your C library. # # Define HAVE_DEV_TTY if your system can open /dev/tty to interact with the @@ -1442,8 +1447,14 @@ ifdef NATIVE_CRLF endif ifdef USE_NED_ALLOCATOR - COMPAT_CFLAGS += -Icompat/nedmalloc - COMPAT_OBJS += compat/nedmalloc/nedmalloc.o + COMPAT_CFLAGS += -Icompat/nedmalloc + COMPAT_OBJS += compat/nedmalloc/nedmalloc.o + OVERRIDE_STRDUP = YesPlease +endif + +ifdef OVERRIDE_STRDUP + COMPAT_CFLAGS += -DOVERRIDE_STRDUP + COMPAT_OBJS += compat/strdup.o endif ifdef GIT_TEST_CMP_USE_COPIED_CONTEXT @@ -1993,7 +2004,7 @@ endif ifdef USE_NED_ALLOCATOR compat/nedmalloc/nedmalloc.sp compat/nedmalloc/nedmalloc.o: EXTRA_CPPFLAGS = \ - -DNDEBUG -DOVERRIDE_STRDUP -DREPLACE_SYSTEM_ALLOCATOR + -DNDEBUG -DREPLACE_SYSTEM_ALLOCATOR compat/nedmalloc/nedmalloc.sp: SPARSE_FLAGS += -Wno-non-pointer-null endif diff --git a/compat/nedmalloc/nedmalloc.c b/compat/nedmalloc/nedmalloc.c index 2d4ef59013..1cc31c3502 100644 --- a/compat/nedmalloc/nedmalloc.c +++ b/compat/nedmalloc/nedmalloc.c @@ -948,22 +948,6 @@ void **nedpindependent_comalloc(nedpool *p, size_t elems, size_t *sizes, void ** return ret; } -#ifdef OVERRIDE_STRDUP -/* - * This implementation is purely there to override the libc version, to - * avoid a crash due to allocation and free on different 'heaps'. - */ -char *strdup(const char *s1) -{ - size_t len = strlen(s1) + 1; - char *s2 = malloc(len); - - if (s2) - memcpy(s2, s1, len); - return s2; -} -#endif - #if defined(__cplusplus) } #endif diff --git a/compat/strdup.c b/compat/strdup.c new file mode 100644 index 0000000000..f3fb978eb3 --- /dev/null +++ b/compat/strdup.c @@ -0,0 +1,11 @@ +#include "../git-compat-util.h" + +char *gitstrdup(const char *s1) +{ + size_t len = strlen(s1) + 1; + char *s2 = malloc(len); + + if (s2) + memcpy(s2, s1, len); + return s2; +} diff --git a/git-compat-util.h b/git-compat-util.h index 49d4029b8d..fd4c814c70 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -646,6 +646,14 @@ void *gitmemmem(const void *haystack, size_t haystacklen, const void *needle, size_t needlelen); #endif +#ifdef OVERRIDE_STRDUP +#ifdef strdup +#undef strdup +#endif +#define strdup gitstrdup +char *gitstrdup(const char *s); +#endif + #ifdef NO_GETPAGESIZE #define getpagesize() sysconf(_SC_PAGESIZE) #endif |