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Mines: add validation for negative mine count.

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If this gets through validation, it causes an infinite loop after
gameplay begins.
This commit is contained in:
Simon Tatham
2020-03-17 18:12:33 +00:00
parent d022a1c11c
commit d71ac73d8a
1 changed files with 2 additions and 0 deletions
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2
mines.c
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@ -258,6 +258,8 @@ static const char *validate_params(const game_params *params, bool full)
*/ */
if (full && params->unique && (params->w <= 2 || params->h <= 2)) if (full && params->unique && (params->w <= 2 || params->h <= 2))
return "Width and height must both be greater than two"; return "Width and height must both be greater than two";
if (params->n < 0)
return "Mine count may not be negative";
if (params->n > params->w * params->h - 9) if (params->n > params->w * params->h - 9)
return "Too many mines for grid size"; return "Too many mines for grid size";