diff options
Diffstat (limited to 'malloc/malloc.c')
| -rw-r--r-- | malloc/malloc.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index e33ed665db..5d8b61d66c 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -3528,6 +3528,29 @@ __libc_memalign (size_t alignment, size_t bytes) void *address = RETURN_ADDRESS (0); return _mid_memalign (alignment, bytes, address); } +libc_hidden_def (__libc_memalign) + +/* For ISO C17. */ +void * +weak_function +aligned_alloc (size_t alignment, size_t bytes) +{ + if (!__malloc_initialized) + ptmalloc_init (); + +/* Similar to memalign, but starting with ISO C17 the standard + requires an error for alignments that are not supported by the + implementation. Valid alignments for the current implementation + are non-negative powers of two. */ + if (!powerof2 (alignment) || alignment == 0) + { + __set_errno (EINVAL); + return 0; + } + + void *address = RETURN_ADDRESS (0); + return _mid_memalign (alignment, bytes, address); +} static void * _mid_memalign (size_t alignment, size_t bytes, void *address) @@ -3618,9 +3641,6 @@ _mid_memalign (size_t alignment, size_t bytes, void *address) ar_ptr == arena_for_chunk (mem2chunk (p))); return tag_new_usable (p); } -/* For ISO C11. */ -weak_alias (__libc_memalign, aligned_alloc) -libc_hidden_def (__libc_memalign) void * __libc_valloc (size_t bytes) |