From f31a400bac0b72e773e32d2a17ac839145dded2b Mon Sep 17 00:00:00 2001
From: Franklin Wei <git@fwei.tk>
Date: Wed, 16 Aug 2017 11:37:10 -0400
Subject: puzzles: add more parameter validation checks

Fixes some annoying crashes.

Change-Id: If3c293bd90e301c3e697d1e5fcb1b0aa2ea320fb
---
 apps/plugins/puzzles/src/pattern.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'apps/plugins/puzzles/src/pattern.c')

diff --git a/apps/plugins/puzzles/src/pattern.c b/apps/plugins/puzzles/src/pattern.c
index 9a74e55318..15cdd281c9 100644
--- a/apps/plugins/puzzles/src/pattern.c
+++ b/apps/plugins/puzzles/src/pattern.c
@@ -179,6 +179,8 @@ static char *validate_params(const game_params *params, int full)
 {
     if (params->w <= 0 || params->h <= 0)
 	return "Width and height must both be greater than zero";
+    if (params->w * params->w < 2)
+        return "Grid must contain at least two squares";
     return NULL;
 }
 
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