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lib/os/heap: add missing realloc semantics

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Need to handle those cases where a NULL pointer and/or 0 size
is provided.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
This commit is contained in:
Nicolas Pitre 2020-12-17 23:34:41 -05:00 • committed by Anas Nashif
commit 16fa1cf844
1 changed files with 9 additions and 0 deletions
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9
lib/os/heap.c
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@ -297,6 +297,15 @@ void *sys_heap_aligned_alloc(struct sys_heap *heap, size_t align, size_t bytes)
void *sys_heap_realloc(struct sys_heap *heap, void *ptr, size_t bytes)
{
/* special realloc semantics */
if (ptr == NULL) {
return sys_heap_alloc(heap, bytes);
}
if (bytes == 0) {
sys_heap_free(heap, ptr);
return NULL;
}
struct z_heap *h = heap->heap;
chunkid_t c = mem_to_chunkid(h, ptr);
chunkid_t rc = right_chunk(h, c);