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* gc.c (vm_xrealloc): add a few comment why we avoid realloc(ptr,0).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38696 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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@ -1,3 +1,7 @@
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Sat Jan 5 05:04:39 2013 KOSAKI Motohiro <kosaki.motohiro@gmail.com>
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* gc.c (vm_xrealloc): add a few comment why we avoid realloc(ptr,0).
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Fri Jan 4 20:17:06 2013 Yuki Yugui Sonoda <yugui@yugui.jp>
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* Makefile.in (RBCONFIG): Moved from common.mk in order to use the
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7
gc.c
7
gc.c
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@ -3529,7 +3529,14 @@ vm_xrealloc(rb_objspace_t *objspace, void *ptr, size_t size)
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if ((ssize_t)size < 0) {
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negative_size_allocation_error("negative re-allocation size");
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}
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if (!ptr) return vm_xmalloc(objspace, size);
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/*
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* The behavior of realloc(ptr, 0) is implementation defined.
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* Therefore we don't use realloc(ptr, 0) for portability reason.
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* see http://www.open-std.org/jtc1/sc22/wg14/www/docs/dr_400.htm
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*/
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if (size == 0) {
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vm_xfree(objspace, ptr);
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return 0;
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