shithub: puzzles

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

[originally from svn r8913]

--- a/signpost.c

+++ b/signpost.c

@@ -423,6 +423,8 @@

 {

     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;

 }