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Last-ditch maximum size limit for Twiddle

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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
2023-01-10 20:28:19 +00:00
parent c53e0d3867
commit 51dcf4add6
1 changed files with 3 additions and 0 deletions
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3
twiddle.c
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@ -10,6 +10,7 @@
#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"
@ -210,6 +211,8 @@ static const char *validate_params(const game_params *params, bool full)
return "Width must be at least the rotating block size"; return "Width must be at least the rotating block size";
if (params->h < params->n) if (params->h < params->n)
return "Height must be at least the rotating block size"; return "Height must be at least the rotating block size";
if (params->w > INT_MAX / params->h)
return "Width times height must not be unreasonably large";
return NULL; return NULL;
} }