diff options
Diffstat (limited to 'libc/stdlib/malloc/realloc.c')
| -rw-r--r-- | libc/stdlib/malloc/realloc.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/libc/stdlib/malloc/realloc.c b/libc/stdlib/malloc/realloc.c index 4d56565aa..ec57b874e 100644 --- a/libc/stdlib/malloc/realloc.c +++ b/libc/stdlib/malloc/realloc.c @@ -7,7 +7,7 @@ * This file is subject to the terms and conditions of the GNU Lesser * General Public License. See the file COPYING.LIB in the main * directory of this archive for more details. - * + * * Written by Miles Bader <miles@gnu.org> */ @@ -46,6 +46,11 @@ realloc (void *mem, size_t new_size) allocation unit (SIZE is already guaranteed to be so).*/ new_size = HEAP_ADJUST_SIZE (new_size + MALLOC_HEADER_SIZE); + if (new_size < sizeof (struct heap_free_area)) + /* Because we sometimes must use a freed block to hold a free-area node, + we must make sure that every allocated block can hold one. */ + new_size = HEAP_ADJUST_SIZE (sizeof (struct heap_free_area)); + MALLOC_DEBUG (1, "realloc: 0x%lx, %d (base = 0x%lx, total_size = %d)", (long)mem, new_size, (long)base_mem, size); |