bjoernager/rust
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This commit is contained in:
Ellen 2021-02-23 23:35:48 +00:00
parent d1206f950f
commit 42cbfd6346
9 changed files with 131 additions and 57 deletions
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10
compiler/rustc_middle/src/query/mod.rs
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@ -1632,4 +1632,14 @@ rustc_queries! {
query normalize_opaque_types(key: &'tcx ty::List<ty::Predicate<'tcx>>) -> &'tcx ty::List<ty::Predicate<'tcx>> {
desc { "normalizing opaque types in {:?}", key }
}
/// Checks whether a type is definitely uninhabited. This is
/// conservative: for some types that are uninhabited we return `false`,
/// but we only return `true` for types that are definitely uninhabited.
/// `ty.conservative_is_privately_uninhabited` implies that any value of type `ty`
/// will be `Abi::Uninhabited`. (Note that uninhabited types may have nonzero
/// size, to account for partial initialisation. See #49298 for details.)
query conservative_is_privately_uninhabited(key: ty::ParamEnvAnd<'tcx, Ty<'tcx>>) -> bool {
desc { "conservatively checking if {:?} is privately uninhabited", key }
}
}