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-rw-r--r-- | ChangeLog | 4 | ||||
-rw-r--r-- | gc.c | 7 |
2 files changed, 11 insertions, 0 deletions
@@ -1,3 +1,7 @@ +Sat Jan 5 05:04:39 2013 KOSAKI Motohiro <kosaki.motohiro@gmail.com> + + * gc.c (vm_xrealloc): add a few comment why we avoid realloc(ptr,0). + Fri Jan 4 20:17:06 2013 Yuki Yugui Sonoda <yugui@yugui.jp> * Makefile.in (RBCONFIG): Moved from common.mk in order to use the @@ -3529,7 +3529,14 @@ vm_xrealloc(rb_objspace_t *objspace, void *ptr, size_t size) if ((ssize_t)size < 0) { negative_size_allocation_error("negative re-allocation size"); } + if (!ptr) return vm_xmalloc(objspace, size); + + /* + * The behavior of realloc(ptr, 0) is implementation defined. + * Therefore we don't use realloc(ptr, 0) for portability reason. + * see http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_400.htm + */ if (size == 0) { vm_xfree(objspace, ptr); return 0; |