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Fix realloc behavior when size == 0 and ptr != NULL.

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Patch by DrV, bug 2347.

svn path=/trunk/; revision=27299
This commit is contained in:
Andrew Munger 2007-06-28 07:05:24 +00:00
parent 57e548bec4
commit 1289745bf8
1 changed files with 11 additions and 7 deletions
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14
reactos/lib/sdk/crt/stdlib/malloc.c
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@ -73,18 +73,22 @@ void* realloc(void* _ptr, size_t _size)
{ {
size_t nSize; size_t nSize;
if (( _size == 0) && (_ptr !=NULL)) if (_ptr == NULL)
return malloc(_size);
if (_size == 0)
{
free(_ptr);
return NULL; return NULL;
}
nSize = ROUND_SIZE(_size); nSize = ROUND_SIZE(_size);
/* check for integer overflow */
if (nSize<_size) if (nSize<_size)
return NULL; return NULL;
if (!_ptr) return malloc(_size); return HeapReAlloc(hHeap, 0, _ptr, nSize);
if (_size) return HeapReAlloc(hHeap, 0, _ptr, nSize);
free(_ptr);
return NULL;
} }
/* /*