Drive-by DUMMY_SP -> Span and fmt changes

Noticed these while doing something else. There's no practical change, but it's preferable to use `DUMMY_SP` as little as possible, particularly when we have perfectlly useful `Span`s available.

Author: estebank

compiler/rustc_borrowck/src/type_check/canonical.rs

@@ -100,7 +100,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
         locations: Locations,
     ) {
         for (predicate, span) in instantiated_predicates {
-            debug!(?predicate);
+            debug!(?span, ?predicate);
             let category = ConstraintCategory::Predicate(span);
             let predicate = self.normalize_with_category(predicate, locations, category);
             self.prove_predicate(predicate, locations, category);

compiler/rustc_borrowck/src/type_check/constraint_conversion.rs

@@ -8,7 +8,7 @@ use rustc_middle::mir::{ClosureOutlivesSubject, ClosureRegionRequirements, Const
 use rustc_middle::traits::query::NoSolution;
 use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::{self, GenericArgKind, Ty, TyCtxt, TypeFoldable, TypeVisitableExt};
-use rustc_span::{Span, DUMMY_SP};
+use rustc_span::Span;
 use rustc_trait_selection::solve::deeply_normalize;
 use rustc_trait_selection::traits::query::type_op::custom::CustomTypeOp;
 use rustc_trait_selection::traits::query::type_op::{TypeOp, TypeOpOutput};
@@ -183,7 +183,7 @@ impl<'a, 'tcx> ConstraintConversion<'a, 'tcx> {
 
                         // we don't actually use this for anything, but
                         // the `TypeOutlives` code needs an origin.
-                        let origin = infer::RelateParamBound(DUMMY_SP, t1, None);
+                        let origin = infer::RelateParamBound(self.span, t1, None);
 
                         TypeOutlives::new(
                             &mut *self,

compiler/rustc_borrowck/src/type_check/free_region_relations.rs

@@ -10,7 +10,7 @@ use rustc_middle::mir::ConstraintCategory;
 use rustc_middle::traits::query::OutlivesBound;
 use rustc_middle::traits::ObligationCause;
 use rustc_middle::ty::{self, RegionVid, Ty, TypeVisitableExt};
-use rustc_span::{ErrorGuaranteed, DUMMY_SP};
+use rustc_span::{ErrorGuaranteed, Span};
 use rustc_trait_selection::solve::deeply_normalize;
 use rustc_trait_selection::traits::error_reporting::TypeErrCtxtExt;
 use rustc_trait_selection::traits::query::type_op::{self, TypeOp};
@@ -269,7 +269,7 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> {
             debug!("build: input_or_output={:?}", ty);
             // We add implied bounds from both the unnormalized and normalized ty.
             // See issue #87748
-            let constraints_unnorm = self.add_implied_bounds(ty);
+            let constraints_unnorm = self.add_implied_bounds(ty, span);
             if let Some(c) = constraints_unnorm {
                 constraints.push(c)
             }
@@ -299,7 +299,7 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> {
             // ```
             // Both &Self::Bar and &() are WF
             if ty != norm_ty {
-                let constraints_norm = self.add_implied_bounds(norm_ty);
+                let constraints_norm = self.add_implied_bounds(norm_ty, span);
                 if let Some(c) = constraints_norm {
                     constraints.push(c)
                 }
@@ -323,7 +323,7 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> {
 
                 // We currently add implied bounds from the normalized ty only.
                 // This is more conservative and matches wfcheck behavior.
-                let c = self.add_implied_bounds(norm_ty);
+                let c = self.add_implied_bounds(norm_ty, span);
                 constraints.extend(c);
             }
         }
@@ -361,11 +361,15 @@ impl<'tcx> UniversalRegionRelationsBuilder<'_, 'tcx> {
     /// the same time, compute and add any implied bounds that come
     /// from this local.
     #[instrument(level = "debug", skip(self))]
-    fn add_implied_bounds(&mut self, ty: Ty<'tcx>) -> Option<&'tcx QueryRegionConstraints<'tcx>> {
+    fn add_implied_bounds(
+        &mut self,
+        ty: Ty<'tcx>,
+        span: Span,
+    ) -> Option<&'tcx QueryRegionConstraints<'tcx>> {
         let TypeOpOutput { output: bounds, constraints, .. } = self
             .param_env
             .and(type_op::implied_outlives_bounds::ImpliedOutlivesBounds { ty })
-            .fully_perform(self.infcx, DUMMY_SP)
+            .fully_perform(self.infcx, span)
             .map_err(|_: ErrorGuaranteed| debug!("failed to compute implied bounds {:?}", ty))
             .ok()?;
         debug!(?bounds, ?constraints);

compiler/rustc_borrowck/src/type_check/mod.rs

@@ -37,7 +37,7 @@ use rustc_mir_dataflow::points::DenseLocationMap;
 use rustc_span::def_id::CRATE_DEF_ID;
 use rustc_span::source_map::Spanned;
 use rustc_span::symbol::sym;
-use rustc_span::{Span, DUMMY_SP};
+use rustc_span::Span;
 use rustc_target::abi::{FieldIdx, FIRST_VARIANT};
 use rustc_trait_selection::traits::query::type_op::custom::scrape_region_constraints;
 use rustc_trait_selection::traits::query::type_op::custom::CustomTypeOp;
@@ -1014,7 +1014,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
     ) -> Self {
         let mut checker = Self {
             infcx,
-            last_span: DUMMY_SP,
+            last_span: body.span,
             body,
             user_type_annotations: &body.user_type_annotations,
             param_env,
@@ -2766,7 +2766,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> {
                 self.param_env,
                 self.known_type_outlives_obligations,
                 locations,
-                DUMMY_SP,                   // irrelevant; will be overridden.
+                self.body.span,             // irrelevant; will be overridden.
                 ConstraintCategory::Boring, // same as above.
                 self.borrowck_context.constraints,
             )

compiler/rustc_hir_analysis/src/collect.rs

@@ -1630,7 +1630,7 @@ fn early_bound_lifetimes_from_generics<'a, 'tcx: 'a>(
 #[instrument(level = "debug", skip(tcx))]
 fn predicates_defined_on(tcx: TyCtxt<'_>, def_id: DefId) -> ty::GenericPredicates<'_> {
     let mut result = tcx.explicit_predicates_of(def_id);
-    debug!("predicates_defined_on: explicit_predicates_of({:?}) = {:?}", def_id, result,);
+    debug!("predicates_defined_on: explicit_predicates_of({:?}) = {:?}", def_id, result);
     let inferred_outlives = tcx.inferred_outlives_of(def_id);
     if !inferred_outlives.is_empty() {
         debug!(

compiler/rustc_infer/src/infer/canonical/query_response.rs

@@ -405,7 +405,7 @@ impl<'tcx> InferCtxt<'tcx> {
     /// will instantiate fresh inference variables for each canonical
     /// variable instead. Therefore, the result of this method must be
     /// properly unified
-    #[instrument(level = "debug", skip(self, cause, param_env))]
+    #[instrument(level = "debug", skip(self, param_env))]
     fn query_response_instantiation_guess<R>(
         &self,
         cause: &ObligationCause<'tcx>,

compiler/rustc_trait_selection/src/traits/outlives_bounds.rs

@@ -62,9 +62,10 @@ fn implied_outlives_bounds<'a, 'tcx>(
     };
 
     let mut constraints = QueryRegionConstraints::default();
+    let span = infcx.tcx.def_span(body_id);
     let Ok(InferOk { value: mut bounds, obligations }) = infcx
         .instantiate_nll_query_response_and_region_obligations(
-            &ObligationCause::dummy(),
+            &ObligationCause::dummy_with_span(span),
             param_env,
             &canonical_var_values,
             canonical_result,
@@ -80,8 +81,6 @@ fn implied_outlives_bounds<'a, 'tcx>(
     bounds.retain(|bound| !bound.has_placeholders());
 
     if !constraints.is_empty() {
-        let span = infcx.tcx.def_span(body_id);
-
         debug!(?constraints);
         if !constraints.member_constraints.is_empty() {
             span_bug!(span, "{:#?}", constraints.member_constraints);

tests/ui/inference/issue-80409.no-compat.stderr

@@ -1,6 +1,16 @@
 error: internal compiler error: error performing ParamEnvAnd { param_env: ParamEnv { caller_bounds: [], reveal: UserFacing }, value: ImpliedOutlivesBounds { ty: &'?2 mut StateContext<'?3, usize> } }
+  --> $DIR/issue-80409.rs:49:30
    |
-   = query stack during panic:
+LL |     builder.state().on_entry(|_| {});
+   |                              ^^^
+   |
+note: 
+  --> $DIR/issue-80409.rs:49:30
+   |
+LL |     builder.state().on_entry(|_| {});
+   |                              ^^^
+
+query stack during panic:
 end of query stack
 error: aborting due to 1 previous error
 

tests/ui/inference/issue-80409.rs

@@ -8,6 +8,7 @@
 //@[no-compat] check-fail
 //@[no-compat] known-bug: #80409
 //@[no-compat] failure-status: 101
+//@[no-compat] normalize-stderr-test "delayed at.*" -> ""
 //@[no-compat] normalize-stderr-test "note: .*\n\n" -> ""
 //@[no-compat] normalize-stderr-test "thread 'rustc' panicked.*\n" -> ""
 //@[no-compat] normalize-stderr-test "(error: internal compiler error: [^:]+):\d+:\d+: " -> "$1:LL:CC: "