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Last-ditch maximum size limit for Magnets

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This makes sure that width * height <= INT_MAX, which it rather needs
to be.
This commit is contained in:
Ben Harris
2023-01-11 09:43:01 +00:00
parent d71bba1a17
commit 261a9568fa
1 changed files with 3 additions and 0 deletions
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3
magnets.c
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@ -36,6 +36,7 @@
#include <string.h> #include <string.h>
#include <assert.h> #include <assert.h>
#include <ctype.h> #include <ctype.h>
#include <limits.h>
#include <math.h> #include <math.h>
#include "puzzles.h" #include "puzzles.h"
@ -232,6 +233,8 @@ static const char *validate_params(const game_params *params, bool full)
{ {
if (params->w < 2) return "Width must be at least two"; if (params->w < 2) return "Width must be at least two";
if (params->h < 2) return "Height must be at least two"; if (params->h < 2) return "Height must be at least two";
if (params->w > INT_MAX / params->h)
return "Width times height must not be unreasonably large";
if (params->diff >= DIFF_TRICKY) { if (params->diff >= DIFF_TRICKY) {
if (params->w < 5 && params->h < 5) if (params->w < 5 && params->h < 5)
return "Either width or height must be at least five for Tricky"; return "Either width or height must be at least five for Tricky";