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Fix array bounds violation in the solver. Oops.
[sgt/puzzles]
/
inertia.c
diff --git
a/inertia.c
b/inertia.c
index
a158363
..
fc213da
100644
(file)
--- a/
inertia.c
+++ b/
inertia.c
@@
-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);