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| author | Ben Harris <bjh21@bjh21.me.uk> | 2023-02-26 14:24:38 +0000 |
|---|---|---|
| committer | Ben Harris <bjh21@bjh21.me.uk> | 2023-02-26 22:47:18 +0000 |
| commit | 93be3f7ccaa63b0fd953bcfd88d685b47b76605e (patch) | |
| tree | bd23eeedb0c6c75492b67379c2fd29226e828a94 /map.c | |
| parent | 9dbcfa765ba59a8201425df18bec09c7bc334c5e (diff) | |
| download | puzzles-93be3f7ccaa63b0fd953bcfd88d685b47b76605e.zip puzzles-93be3f7ccaa63b0fd953bcfd88d685b47b76605e.tar.gz puzzles-93be3f7ccaa63b0fd953bcfd88d685b47b76605e.tar.bz2 puzzles-93be3f7ccaa63b0fd953bcfd88d685b47b76605e.tar.xz | |
Be more careful with type of left operand of <<
On a 32-bit system, evaluating 1<<31 causes undefined behaviour because
1 is signed and so it produces signed overflow. UBSan has spotted a
couple of occasions where this happens in Puzzles, so in each case I've
converted the left operand to the unsigned result type we actually want.
Diffstat (limited to 'map.c')
0 files changed, 0 insertions, 0 deletions