pyrox.dev
1From: christos <christos>
2Date: Thu, 28 May 2015 11:47:03 +0000
3Subject: [PATCH] avoid gcc-5 optimization malloc + memset = calloc (Fridolin
4Pokorny)
5
6---
7tc.alloc.c | 5 ++++-
81 file changed, 4 insertions(+), 1 deletion(-)
9
10diff --git a/tc.alloc.c b/tc.alloc.c
11index b9aec63..c1cb330 100644
12--- a/tc.alloc.c
13+++ b/tc.alloc.c
14@@ -348,10 +348,13 @@ calloc(size_t i, size_t j)
15 {
16 #ifndef lint
17 char *cp;
18+ volatile size_t k;
19
20 i *= j;
21 cp = xmalloc(i);
22- memset(cp, 0, i);
23+ /* Stop gcc 5.x from optimizing malloc+memset = calloc */
24+ k = i;
25+ memset(cp, 0, k);
26
27 return ((memalign_t) cp);
28 #else