diff options
Diffstat (limited to 'common/dlmalloc.c')
| -rw-r--r-- | common/dlmalloc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/dlmalloc.c b/common/dlmalloc.c index 4871f4b09..e9bab09b8 100644 --- a/common/dlmalloc.c +++ b/common/dlmalloc.c @@ -1511,6 +1511,13 @@ void *sbrk(ptrdiff_t increment) ulong old = mem_malloc_brk; ulong new = old + increment; + /* + * if we are giving memory back make sure we clear it out since + * we set MORECORE_CLEARS to 1 + */ + if (increment < 0) + memset((void *)new, 0, -increment); + if ((new < mem_malloc_start) || (new > mem_malloc_end)) return (void *)MORECORE_FAILURE; |