# HG changeset patch
# User Jim Hague <jim.hague@acm.org>
# Date 1193135964 0
# Node ID f84bb2e1cc3a37070ffbb6852af329e068d91bdb
# Parent  78a6b985882f4221f9a7a05744bbdb95eb5aeaec
fix calloc(0, ...) issue

diff -r 78a6b985882f -r f84bb2e1cc3a mercurial/bdiff.c
--- a/mercurial/bdiff.c	Sun Dec 02 15:15:49 2007 -0600
+++ b/mercurial/bdiff.c	Tue Oct 23 10:39:24 2007 +0000
@@ -245,7 +245,7 @@
 
 	/* allocate and fill arrays */
 	t = equatelines(a, an, b, bn);
-	pos = (struct pos *)calloc(bn, sizeof(struct pos));
+	pos = (struct pos *)calloc(bn ? bn : 1, sizeof(struct pos));
 	/* we can't have more matches than lines in the shorter file */
 	l.head = l.base = (struct hunk *)malloc(sizeof(struct hunk) *
 	                                        ((an<bn ? an:bn) + 1));