bjoernager/rust
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Enforce diverging let...else

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This commit is contained in:
Cameron Steffen 2021-07-30 11:30:12 -05:00
parent cb4439a315
commit 2f4e86b9ef
4 changed files with 33 additions and 5 deletions
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9
compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs
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@ -1928,7 +1928,11 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
| ObligationCauseCode::OpaqueType
| ObligationCauseCode::MiscObligation
| ObligationCauseCode::WellFormed(..)
| ObligationCauseCode::MatchImpl(..) => {}
| ObligationCauseCode::MatchImpl(..)
| ObligationCauseCode::ReturnType
| ObligationCauseCode::ReturnValue(_)
| ObligationCauseCode::BlockTailExpression(_)
| ObligationCauseCode::LetElse => {}
ObligationCauseCode::SliceOrArrayElem => {
err.note("slice and array elements must have `Sized` type");
}
@ -2338,9 +2342,6 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> {
predicate
));
}
ObligationCauseCode::ReturnType
| ObligationCauseCode::ReturnValue(_)
| ObligationCauseCode::BlockTailExpression(_) => (),
ObligationCauseCode::TrivialBound => {
err.help("see issue #48214");
if tcx.sess.opts.unstable_features.is_nightly_build() {