[Kernel] Fix rt_realloc issue when new size is 0.
* 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.
+ * 2017-07-14 armink fix rt_realloc issue when new size is 0
*/
/*
@@ -400,6 +401,11 @@ void *rt_realloc(void *rmem, rt_size_t newsize)
return RT_NULL;
}
+ else if (newsize == 0)
+ {
+ rt_free(rmem);
+ return RT_NULL;
+ }
/* allocate a new memory block */
if (rmem == RT_NULL)
@@ -589,4 +595,3 @@ FINSH_FUNCTION_EXPORT(list_mem, list memory usage information)
#endif /* end of RT_USING_HEAP */
#endif /* end of RT_USING_MEMHEAP_AS_HEAP */
-
