From: Russ Cox <rsc@golang.org>
Date: Sat, 10 Jan 2009 00:22:13 +0000 (-0800)
Subject: free(nil)
X-Git-Tag: weekly.2009-11-06~2392
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=0c3243053465e0e4482fb5040c2e4e16972751cc;p=gostls13.git

free(nil)

R=iant
DELTA=3  (3 added, 0 deleted, 0 changed)
OCL=22467
CL=22471
---

diff --git a/src/runtime/malloc.c b/src/runtime/malloc.c
index 744e1222b7..1d3c8b958b 100644
--- a/src/runtime/malloc.c
+++ b/src/runtime/malloc.c
@@ -68,6 +68,9 @@ free(void *v)
 	MSpan *s;
 	MCache *c;
 
+	if(v == nil)
+		return;
+
 	// Find size class for v.
 	page = (uintptr)v >> PageShift;
 	sizeclass = MHeapMapCache_GET(&mheap.mapcache, page, tmp);