diff options
Diffstat (limited to 'malloc/malloc.c')
| -rw-r--r-- | malloc/malloc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/malloc/malloc.c b/malloc/malloc.c index d37e521367..206f3e1b6a 100644 --- a/malloc/malloc.c +++ b/malloc/malloc.c @@ -4230,8 +4230,14 @@ _int_malloc(mstate av, size_t bytes) /* Split */ else { remainder = chunk_at_offset(victim, nb); - unsorted_chunks(av)->bk = unsorted_chunks(av)->fd = remainder; - remainder->bk = remainder->fd = unsorted_chunks(av); + /* We cannot assume the unsorted list is empty and therefore + have to perform a complete insert here. */ + bck = unsorted_chunks(av); + fwd = bck->fd; + remainder->bk = bck; + remainder->fd = fwd; + bck->fd = remainder; + fwd->bk = remainder; set_head(victim, nb | PREV_INUSE | (av != &main_arena ? NON_MAIN_ARENA : 0)); set_head(remainder, remainder_size | PREV_INUSE); |