mikros/rust
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Rollup merge of #124610 - nnethercote:typenum, r=lcnr

Browse Source 
Tweak `consts_may_unify`

r? ````@lcnr````
This commit is contained in:
Matthias Krüger 2024-05-03 06:04:22 +02:00 committed by GitHub
commit a9edd38d18
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 4 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
compiler/rustc_middle/src/ty/fast_reject.rs
View File

@ -330,20 +330,19 @@ pub fn types_may_unify<'tcx>(self, obligation_ty: Ty<'tcx>, impl_ty: Ty<'tcx>) -
}
pub fn consts_may_unify(self, obligation_ct: ty::Const<'_>, impl_ct: ty::Const<'_>) -> bool {
match impl_ct.kind() {
let impl_val = match impl_ct.kind() {
ty::ConstKind::Expr(_)
| ty::ConstKind::Param(_)
| ty::ConstKind::Unevaluated(_)
| ty::ConstKind::Error(_) => {
return true;
}
ty::ConstKind::Value(_) => {}
ty::ConstKind::Value(impl_val) => impl_val,
ty::ConstKind::Infer(_) | ty::ConstKind::Bound(..) | ty::ConstKind::Placeholder(_) => {
bug!("unexpected impl arg: {:?}", impl_ct)
}
}
};
let k = impl_ct.kind();
match obligation_ct.kind() {
ty::ConstKind::Param(_) => match self.treat_obligation_params {
TreatParams::ForLookup => false,
@ -358,10 +357,7 @@ pub fn consts_may_unify(self, obligation_ct: ty::Const<'_>, impl_ct: ty::Const<'
ty::ConstKind::Expr(_) | ty::ConstKind::Unevaluated(_) | ty::ConstKind::Error(_) => {
true
}
ty::ConstKind::Value(obl) => match k {
ty::ConstKind::Value(imp) => obl == imp,
_ => true,
},
ty::ConstKind::Value(obl_val) => obl_val == impl_val,
ty::ConstKind::Infer(_) => true,