From: Simon Tatham <anakin@pobox.com>
Date: Fri, 2 Apr 2010 07:21:34 +0000 (+0000)
Subject: Dylan O'Donnell reports that Signpost hangs on trying to generate a
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=8e74bbae6b12fbf0afe155b9ba3b8329426583d4;p=sgt-puzzles.git

Dylan O'Donnell reports that Signpost hangs on trying to generate a
2x2 puzzle. Rule it out in validate_params().

[originally from svn r8913]
---

diff --git a/signpost.c b/signpost.c
index 05d4eaf..d4812a2 100644
--- a/signpost.c
+++ b/signpost.c
@@ -423,6 +423,8 @@ static char *validate_params(game_params *params, int full)
 {
     if (params->w < 2 || params->h < 2)
 	return "Width and height must both be at least two";
+    if (params->w == 2 && params->h == 2)   /* leads to generation hang */
+	return "Width and height cannot both be two";
 
     return NULL;
 }