From: Gabriel Corona <gabriel.corona@loria.fr>
Date: Fri, 11 Jul 2014 10:04:34 +0000 (+0200)
Subject: [mmalloc] Avoid useless memset0
X-Git-Tag: v3_12~890^2~1^2~4^2~11
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/e48f73aca9a0963b1e0879242211f2b51bb66fee

[mmalloc] Avoid useless memset0
---

diff --git a/src/xbt/mmalloc/mmalloc.c b/src/xbt/mmalloc/mmalloc.c
index 72ca5a0cd6..c91b4a06cb 100644
--- a/src/xbt/mmalloc/mmalloc.c
+++ b/src/xbt/mmalloc/mmalloc.c
@@ -97,9 +97,12 @@ static void *register_morecore(struct mdesc *mdp, size_t size)
     /* Copy old info into new location */
     oldinfo = mdp->heapinfo;
     newinfo = (malloc_info *) align(mdp, newsize * sizeof(malloc_info));
-    memset(newinfo, 0, newsize * sizeof(malloc_info));
     memcpy(newinfo, oldinfo, mdp->heapsize * sizeof(malloc_info));
 
+    /* Initialise the new blockinfo : */
+    memset((char*) newinfo + mdp->heapsize * sizeof(malloc_info), 0,
+      (newsize - mdp->heapsize)* sizeof(malloc_info));
+
     /* Update the swag of busy blocks containing free fragments by applying the offset to all swag_hooks. Yeah. My hand is right in the fan and I still type */
     size_t offset=((char*)newinfo)-((char*)oldinfo);