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Re: GCC turns &~ into | due to undefined bit-shift without warning

Hey.

Am 20.03.2019 um 15:26 schrieb Christophe Lyon:

You can -fsanitize-undefined-trap-on-error, which doesn't increase size too
much, it is less user-friendly, but still should catch the UB.



Wouldn't this fail to link? I thought the sanitizers need some runtime libraries which are only available under linux/macos/android. What do you mean by embedded? Isn't it arm-eabi?


Nope. It inserts a trap, triggering a hard fault (as the manual says). Works just fine.

Moritz

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