From: simon <simon@cda61777-01e9-0310-a592-d414129be87e>
Date: Tue, 31 May 2005 17:46:22 +0000 (+0000)
Subject: valgrind spotted this array underrun. I wonder if this might have
X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/puzzles/commitdiff_plain/8586183cb0df975491d0c9aba1fb084c39f4f0f4

valgrind spotted this array underrun. I wonder if this might have
been causing some of Verity's nonreproducible weirdnesses.


git-svn-id: svn://svn.tartarus.org/sgt/puzzles@5884 cda61777-01e9-0310-a592-d414129be87e
---

diff --git a/mines.c b/mines.c
index 5023faa..a6562f6 100644
--- a/mines.c
+++ b/mines.c
@@ -1086,7 +1086,7 @@ static int minesolve(int w, int h, int n, signed char *grid,
 			 * next. Backtrack cursor to the nearest 1,
 			 * change it to a 0 and continue.
 			 */
-			while (cursor-- >= 0 && !setused[cursor]);
+			while (--cursor >= 0 && !setused[cursor]);
 			if (cursor >= 0) {
 			    assert(setused[cursor]);