From: Simon Tatham <anakin@pobox.com>
Date: Sun, 27 Dec 2009 19:18:22 +0000 (+0000)
Subject: Fix bug causing array overrun. Only seemed to be showing a symptom
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=b629e34beb60fcf2e880012e00cca52d0cf2fe39;p=sgt-puzzles.git

Fix bug causing array overrun. Only seemed to be showing a symptom
on Windows, presumably because the data after the array was harmless
elsewhere.

[originally from svn r8798]
---

diff --git a/unequal.c b/unequal.c
index 459e35f..8c56509 100644
--- a/unequal.c
+++ b/unequal.c
@@ -728,7 +728,7 @@ static int solver_adjacent_set(struct latin_solver *solver, void *vctx)
 
     for (x = 0; x < o; x++) {
         for (y = 0; y < o; y++) {
-            for (i = 0; i < o; i++) {
+            for (i = 0; i < 4; i++) {
                 int isadjacent = (GRID(ctx->state, flags, x, y) & adjthan[i].f);
 
                 nx = x + adjthan[i].dx, ny = y + adjthan[i].dy;