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CTFE Undefined Behavior #1077

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ehuss opened this issue Jul 23, 2021 · 0 comments
Open

CTFE Undefined Behavior #1077

ehuss opened this issue Jul 23, 2021 · 0 comments
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A-const-eval Area: Const evaluation A-undefined-behavior Area: Undefined behavior

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@ehuss
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ehuss commented Jul 23, 2021

Some undefined behavior found during CTFE is now treated as an error as of rust-lang/rust#86194. I think https://github.com/rust-lang/reference/blob/master/src/const_eval.md should detail which errors are detected, but Ralf indicated in rust-lang/rust#86194 (comment) that they don't want to make any guarantees about which UB is detected. I can understand that, but it also leaves the language a little under specified. I'm not sure how to resolve that.
@ehuss ehuss added A-const-eval Area: Const evaluation A-undefined-behavior Area: Undefined behavior labels Jul 23, 2021
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