void* internal_realloc(void *ptr, size_t size)
{
if (ptr == NULL)
return internal_alloc(size, DEFAULT_ALIGNMENT);
if (size == 0)
return nullptr;
void* new_data = NULL;
auto head = get_block_header(ptr);
if (size>0)
new_data = internal_alloc(size, head->alignment);
if (!new_data) return nullptr;
mcpy(new_data, ptr, min(size, head->total_size - sizeof(block_header) - head->alignment + 1));
internal_free(ptr);
return new_data;
}
void* malloc_intercept::internal_realloc(void *ptr, size_t size)
{
if (ptr == NULL)
return internal_alloc(size, DEFAULT_ALIGNMENT);
// I don't know what size of alignment to use when realloc is called on block allocated with posix_memalign
// Let's just preserve old alignment
block_header* old_blk = block_by_ptr(ptr);
void* new_data = internal_alloc(size, old_blk->alignment);
if (new_data == NULL)
return NULL;
memcpy(new_data, ptr, std::min(size, old_blk->data_size));
internal_free(ptr);
return new_data;
}