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fix rt_realloc issue when realloc a NULL pointer. 

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1010 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong 2010-10-14 09:38:03 +00:00
parent 8a43cbc5b9
commit 9e324032b6
1 changed files with 5 additions and 0 deletions
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5
src/mem.c
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@ -13,6 +13,7 @@
* 2010-06-09 Bernard fix the end stub of heap
* fix memory check in rt_realloc function
* 2010-07-13 Bernard fix RT_ALIGN issue found by kuronca
* 2010-10-14 Bernard fix rt_realloc issue when realloc a NULL pointer.
*/
/*
@ -367,6 +368,10 @@ void *rt_realloc(void *rmem, rt_size_t newsize)
return RT_NULL;
}
/* allocate a new memory block */
if (rmem == RT_NULL)
return rt_malloc(newsize);
rt_sem_take(&heap_sem, RT_WAITING_FOREVER);
if ((rt_uint8_t *)rmem < (rt_uint8_t *)heap_ptr ||