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Fix array bounds violation in the solver. Oops.

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[originally from svn r6225]
This commit is contained in:
Simon Tatham
2005-08-27 09:53:38 +00:00
parent 8c547d5320
commit 389397eed6
1 changed files with 3 additions and 1 deletions
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4
inertia.c
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@ -370,7 +370,9 @@ static int find_gem_candidates(int w, int h, char *grid,
d2 = n;
}
i2 = (y2*w+x2)*DIRECTIONS+d2;
if (!reachable[i2]) {
if (x2 >= 0 && x2 < w &&
y2 >= 0 && y2 < h &&
!reachable[i2]) {
int ok;
#ifdef SOLVER_DIAGNOSTICS
printf(" trying point %d,%d,%d", x2, y2, d2);