TypingMode 🤔

compiler/rustc_const_eval/src/check_consts/check.rs

@@ -16,7 +16,7 @@ use rustc_middle::mir::visit::Visitor;
 use rustc_middle::mir::*;
 use rustc_middle::span_bug;
 use rustc_middle::ty::adjustment::PointerCoercion;
-use rustc_middle::ty::{self, Instance, InstanceKind, Ty, TypeVisitableExt};
+use rustc_middle::ty::{self, Instance, InstanceKind, Ty, TypeVisitableExt, TypingMode};
 use rustc_mir_dataflow::Analysis;
 use rustc_mir_dataflow::impls::MaybeStorageLive;
 use rustc_mir_dataflow::storage::always_storage_live_locals;
@@ -593,7 +593,7 @@ impl<'tcx> Visitor<'tcx> for Checker<'_, 'tcx> {
                 // Typeck only does a "non-const" check since it operates on HIR and cannot distinguish
                 // which path expressions are getting called on and which path expressions are only used
                 // as function pointers. This is required for correctness.
-                let infcx = tcx.infer_ctxt().build();
+                let infcx = tcx.infer_ctxt().build(TypingMode::from_param_env(param_env));
                 let ocx = ObligationCtxt::new_with_diagnostics(&infcx);
 
                 let predicates = tcx.predicates_of(callee).instantiate(tcx, fn_args);

compiler/rustc_const_eval/src/check_consts/ops.rs

@@ -12,7 +12,7 @@ use rustc_middle::mir::CallSource;
 use rustc_middle::span_bug;
 use rustc_middle::ty::print::{PrintTraitRefExt as _, with_no_trimmed_paths};
 use rustc_middle::ty::{
-    self, Closure, FnDef, FnPtr, GenericArgKind, GenericArgsRef, Param, TraitRef, Ty,
+    self, Closure, FnDef, FnPtr, GenericArgKind, GenericArgsRef, Param, TraitRef, Ty, TypingMode,
     suggest_constraining_type_param,
 };
 use rustc_middle::util::{CallDesugaringKind, CallKind, call_kind};
@@ -116,7 +116,7 @@ impl<'tcx> NonConstOp<'tcx> for FnCallNonConst<'tcx> {
                     let obligation =
                         Obligation::new(tcx, ObligationCause::dummy(), param_env, trait_ref);
 
-                    let infcx = tcx.infer_ctxt().build();
+                    let infcx = tcx.infer_ctxt().build(TypingMode::from_param_env(param_env));
                     let mut selcx = SelectionContext::new(&infcx);
                     let implsrc = selcx.select(&obligation);
 

compiler/rustc_const_eval/src/check_consts/qualifs.rs

@@ -114,11 +114,11 @@ impl Qualif for HasMutInterior {
             ty::TraitRef::new(cx.tcx, freeze_def_id, [ty::GenericArg::from(ty)]),
         );
 
-        let infcx = cx
-            .tcx
-            .infer_ctxt()
-            .with_opaque_type_inference(cx.body.source.def_id().expect_local())
-            .build();
+        // FIXME(#132279): This should eventually use the already defined hidden types.
+        let infcx = cx.tcx.infer_ctxt().build(ty::TypingMode::analysis_in_body(
+            cx.tcx,
+            cx.body.source.def_id().expect_local(),
+        ));
         let ocx = ObligationCtxt::new(&infcx);
         ocx.register_obligation(obligation);
         let errors = ocx.select_all_or_error();

compiler/rustc_const_eval/src/interpret/eval_context.rs

@@ -9,7 +9,9 @@ use rustc_middle::query::TyCtxtAt;
 use rustc_middle::ty::layout::{
     self, FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOfHelpers, TyAndLayout,
 };
-use rustc_middle::ty::{self, GenericArgsRef, ParamEnv, Ty, TyCtxt, TypeFoldable, Variance};
+use rustc_middle::ty::{
+    self, GenericArgsRef, ParamEnv, Ty, TyCtxt, TypeFoldable, TypingMode, Variance,
+};
 use rustc_middle::{mir, span_bug};
 use rustc_session::Limit;
 use rustc_span::Span;
@@ -325,7 +327,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
             return true;
         }
         // Slow path: spin up an inference context to check if these traits are sufficiently equal.
-        let infcx = self.tcx.infer_ctxt().build();
+        let infcx = self.tcx.infer_ctxt().build(TypingMode::from_param_env(self.param_env));
         let ocx = ObligationCtxt::new(&infcx);
         let cause = ObligationCause::dummy_with_span(self.cur_span());
         // equate the two trait refs after normalization

compiler/rustc_const_eval/src/util/compare_types.rs

@@ -5,7 +5,7 @@
 
 use rustc_infer::infer::TyCtxtInferExt;
 use rustc_middle::traits::ObligationCause;
-use rustc_middle::ty::{ParamEnv, Ty, TyCtxt, Variance};
+use rustc_middle::ty::{ParamEnv, Ty, TyCtxt, TypingMode, Variance};
 use rustc_trait_selection::traits::ObligationCtxt;
 
 /// Returns whether the two types are equal up to subtyping.
@@ -45,7 +45,8 @@ pub fn relate_types<'tcx>(
     }
 
     let mut builder = tcx.infer_ctxt().ignoring_regions();
-    let infcx = builder.build();
+    // FIXME(#132279): This should eventually use the already defined hidden types.
+    let infcx = builder.build(TypingMode::from_param_env(param_env));
     let ocx = ObligationCtxt::new(&infcx);
     let cause = ObligationCause::dummy();
     let src = ocx.normalize(&cause, param_env, src);