bjoernager/rust
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yeet now unnecessary special-case

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This commit is contained in:
lcnr 2024-02-27 17:30:24 +01:00
parent 6591c80eea
commit 300cffa2d5
1 changed files with 5 additions and 18 deletions
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23
compiler/rustc_hir_analysis/src/check/check.rs
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@ -402,24 +402,11 @@ fn check_opaque_meets_bounds<'tcx>(
let guar = infcx.err_ctxt().report_fulfillment_errors(errors);
return Err(guar);
}
match origin {
// Nested opaque types occur only in associated types:
// ` type Opaque<T> = impl Trait<&'static T, AssocTy = impl Nested>; `
// They can only be referenced as `<Opaque<T> as Trait<&'static T>>::AssocTy`.
// We don't have to check them here because their well-formedness follows from the WF of
// the projection input types in the defining- and use-sites.
hir::OpaqueTyOrigin::TyAlias { .. }
if tcx.def_kind(tcx.parent(def_id.to_def_id())) == DefKind::OpaqueTy => {}
// Can have different predicates to their defining use
hir::OpaqueTyOrigin::TyAlias { .. }
| hir::OpaqueTyOrigin::FnReturn(..)
| hir::OpaqueTyOrigin::AsyncFn(..) => {
let wf_tys = ocx.assumed_wf_types_and_report_errors(param_env, defining_use_anchor)?;
let implied_bounds = infcx.implied_bounds_tys(param_env, def_id, &wf_tys);
let outlives_env = OutlivesEnvironment::with_bounds(param_env, implied_bounds);
ocx.resolve_regions_and_report_errors(defining_use_anchor, &outlives_env)?;
}
}
let wf_tys = ocx.assumed_wf_types_and_report_errors(param_env, defining_use_anchor)?;
let implied_bounds = infcx.implied_bounds_tys(param_env, def_id, &wf_tys);
let outlives_env = OutlivesEnvironment::with_bounds(param_env, implied_bounds);
ocx.resolve_regions_and_report_errors(defining_use_anchor, &outlives_env)?;
if let hir::OpaqueTyOrigin::FnReturn(..) | hir::OpaqueTyOrigin::AsyncFn(..) = origin {
// HACK: this should also fall through to the hidden type check below, but the original