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ref: 40ec3aaf09824face187218f899494aef429a9c6
parent: 051357bb24c0f05c291d6f9e6b460839847923b4
author: Ben Harris <[email protected]>
date: Mon Jan 9 19:25:52 EST 2023

Last-ditch maximum size limit for Netslide

This makes sure that width * height <= INT_MAX, which it rather needs
to be.

--- a/netslide.c
+++ b/netslide.c
@@ -8,6 +8,7 @@
 #include <string.h>
 #include <assert.h>
 #include <ctype.h>
+#include <limits.h>
 #include <math.h>
 
 #include "puzzles.h"
@@ -307,6 +308,8 @@
 {
     if (params->width <= 1 || params->height <= 1)
 	return "Width and height must both be greater than one";
+    if (params->width > INT_MAX / params->height)
+        return "Width times height must not be unreasonably large";
     if (params->barrier_probability < 0)
 	return "Barrier probability may not be negative";
     if (params->barrier_probability > 1)