bjoernager/rust
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pattern lowering: make sure we never call user-defined PartialEq instances

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This commit is contained in:
Ralf Jung 2024-07-13 18:03:05 +02:00
parent e613bc92a1
commit 86ce911f90
3 changed files with 35 additions and 39 deletions
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18
compiler/rustc_pattern_analysis/src/rustc.rs
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@ -462,7 +462,12 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
// This is a box pattern.
ty::Adt(adt, ..) if adt.is_box() => Struct,
ty::Ref(..) => Ref,
_ => bug!("pattern has unexpected type: pat: {:?}, ty: {:?}", pat, ty),
_ => span_bug!(
pat.span,
"pattern has unexpected type: pat: {:?}, ty: {:?}",
pat.kind,
ty.inner()
),
};
}
PatKind::DerefPattern { .. } => {
@ -518,7 +523,12 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
.map(|ipat| self.lower_pat(&ipat.pattern).at_index(ipat.field.index()))
.collect();
}
_ => bug!("pattern has unexpected type: pat: {:?}, ty: {:?}", pat, ty),
_ => span_bug!(
pat.span,
"pattern has unexpected type: pat: {:?}, ty: {}",
pat.kind,
ty.inner()
),
}
}
PatKind::Constant { value } => {
@ -663,7 +673,7 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
}
}
}
_ => bug!("invalid type for range pattern: {}", ty.inner()),
_ => span_bug!(pat.span, "invalid type for range pattern: {}", ty.inner()),
};
fields = vec![];
arity = 0;
@ -674,7 +684,7 @@ impl<'p, 'tcx: 'p> RustcPatCtxt<'p, 'tcx> {
Some(length.eval_target_usize(cx.tcx, cx.param_env) as usize)
}
ty::Slice(_) => None,
_ => span_bug!(pat.span, "bad ty {:?} for slice pattern", ty),
_ => span_bug!(pat.span, "bad ty {} for slice pattern", ty.inner()),
};
let kind = if slice.is_some() {
SliceKind::VarLen(prefix.len(), suffix.len())