diff options
| author | Thorsten Lockert <tholo@cvs.openbsd.org> | 1997-04-05 05:05:45 +0000 |
|---|---|---|
| committer | Thorsten Lockert <tholo@cvs.openbsd.org> | 1997-04-05 05:05:45 +0000 |
| commit | 664f0290d78338a2d6f6e1cf7920934f5fd3a6fb (patch) | |
| tree | 0bee34a8ffed3d4396c21b782b2c426cafe05b32 | |
| parent | 758e07131b8b0646c934d18b5455cdebcbd08eae (diff) | |
Check for overflow; from FreeBSD
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index da2c17b83d1..fc82a4f4190 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -8,7 +8,7 @@ */ #if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = "$OpenBSD: malloc.c,v 1.22 1997/02/11 17:46:36 niklas Exp $"; +static char rcsid[] = "$OpenBSD: malloc.c,v 1.23 1997/04/05 05:05:44 tholo Exp $"; #endif /* LIBC_SCCS and not lint */ /* @@ -756,7 +756,9 @@ imalloc(size) if (suicide) abort(); - if (size <= malloc_maxsize) + if ((size + malloc_pagesize) < size) /* Check for overflow */ + result = 0; + else if (size <= malloc_maxsize) result = malloc_bytes(size); else result = malloc_pages(size); |