diff options
| author | Marc Espie <espie@cvs.openbsd.org> | 2014-04-23 10:47:16 +0000 |
|---|---|---|
| committer | Marc Espie <espie@cvs.openbsd.org> | 2014-04-23 10:47:16 +0000 |
| commit | e82787755e27c6b8105a6ab69d012fb4bf3791c6 (patch) | |
| tree | c743b86e680e5deeabe6d536cd89e54c408ed12a | |
| parent | 4fa94abcaef7e5f07b29d73cd05f8844badb4979 (diff) | |
explain a bit more what's going on for stupid me.
okay otto@
| -rw-r--r-- | lib/libc/stdlib/malloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/libc/stdlib/malloc.c b/lib/libc/stdlib/malloc.c index 5db51d58eed..6c38d6ad87e 100644 --- a/lib/libc/stdlib/malloc.c +++ b/lib/libc/stdlib/malloc.c @@ -1,4 +1,4 @@ -/* $OpenBSD: malloc.c,v 1.156 2014/04/23 05:43:25 otto Exp $ */ +/* $OpenBSD: malloc.c,v 1.157 2014/04/23 10:47:15 espie Exp $ */ /* * Copyright (c) 2008, 2010, 2011 Otto Moerbeek <otto@drijf.net> * Copyright (c) 2012 Matthew Dempsky <matthew@openbsd.org> @@ -1388,6 +1388,9 @@ realloc(void *ptr, size_t size) } +/* this is sqrt(SIZE_MAX+1), as s1*s2 <= SIZE_MAX + * if both s1 < MUL_NO_OVERFLOW and s2 < MUL_NO_OVERFLOW + */ #define MUL_NO_OVERFLOW (1UL << (sizeof(size_t) * 4)) void * |