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Disallow enabling features without their implied features

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This commit is contained in:
Caleb Zulawski 2024-08-06 00:35:32 -04:00
parent 0b98a0c727
commit 8818c95528
5 changed files with 11 additions and 23 deletions
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8
compiler/rustc_const_eval/src/interpret/call.rs
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@ -319,18 +319,12 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
.iter()
.any(|feature| !self.tcx.sess.target_features.contains(&feature.name))
{
// Don't include implicit features in the error, unless only implicit features are
// missing. This should be rare, because it can only happen when an implicit feature
// is disabled, e.g. `+avx2,-avx`
let missing_explicit_features = attrs.target_features.iter().any(|feature| {
!feature.implied && !self.tcx.sess.target_features.contains(&feature.name)
});
throw_ub_custom!(
fluent::const_eval_unavailable_target_features_for_fn,
unavailable_feats = attrs
.target_features
.iter()
.filter(|&feature| !(missing_explicit_features && feature.implied)
.filter(|&feature| !feature.implied
&& !self.tcx.sess.target_features.contains(&feature.name))
.fold(String::new(), |mut s, feature| {
if !s.is_empty() {