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by kllrnohj 462 days ago
strict-aliasing, which is what caused that bug to manifest, is enabled at O2.
1 comments
BoingBoomTschak 462 days ago
Yep, it's what caused the bug to manifest, but who knows if that UB would have caused -O2 optimizations to mangle the result as well.

EDIT: first one is -funswitch-loops, though

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kllrnohj 462 days ago
Probably would have. There's no shortage of UB bugs revealed by O2 after all, including major security issues.
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