Shorten type in note

Author: estebank

compiler/rustc_hir_analysis/src/collect/type_of.rs

@@ -5,6 +5,7 @@ use rustc_hir::intravisit;
 use rustc_hir::intravisit::Visitor;
 use rustc_hir::{HirId, Node};
 use rustc_middle::hir::nested_filter;
+use rustc_middle::ty::print::with_forced_trimmed_paths;
 use rustc_middle::ty::subst::InternalSubsts;
 use rustc_middle::ty::util::IntTypeExt;
 use rustc_middle::ty::{self, DefIdTree, Ty, TyCtxt, TypeFolder, TypeSuperFoldable, TypeVisitable};
@@ -907,10 +908,10 @@ fn infer_placeholder_type<'a>(
                         Applicability::MachineApplicable,
                     );
                 } else {
-                    err.span_note(
+                    with_forced_trimmed_paths!(err.span_note(
                         tcx.hir().body(body_id).value.span,
-                        &format!("however, the inferred type `{}` cannot be named", ty),
-                    );
+                        &format!("however, the inferred type `{ty}` cannot be named"),
+                    ));
                 }
             }
 
@@ -931,10 +932,10 @@ fn infer_placeholder_type<'a>(
                         Applicability::MaybeIncorrect,
                     );
                 } else {
-                    diag.span_note(
+                    with_forced_trimmed_paths!(diag.span_note(
                         tcx.hir().body(body_id).value.span,
-                        &format!("however, the inferred type `{}` cannot be named", ty),
-                    );
+                        &format!("however, the inferred type `{ty}` cannot be named"),
+                    ));
                 }
             }
 

src/test/ui/suggestions/unnamable-types.stderr

@@ -19,7 +19,7 @@ error[E0121]: the placeholder `_` is not allowed within types on item signatures
 LL | const C: _ = || 42;
    |          ^ not allowed in type signatures
    |
-note: however, the inferred type `[closure@$DIR/unnamable-types.rs:17:14: 17:16]` cannot be named
+note: however, the inferred type `[closure@unnamable-types.rs:17:14]` cannot be named
   --> $DIR/unnamable-types.rs:17:14
    |
 LL | const C: _ = || 42;
@@ -31,7 +31,7 @@ error: missing type for `const` item
 LL | const D = S { t: { let i = 0; move || -> i32 { i } } };
    |        ^
    |
-note: however, the inferred type `S<[closure@$DIR/unnamable-types.rs:23:31: 23:45]>` cannot be named
+note: however, the inferred type `S<[closure@unnamable-types.rs:23:31]>` cannot be named
   --> $DIR/unnamable-types.rs:23:11
    |
 LL | const D = S { t: { let i = 0; move || -> i32 { i } } };

src/test/ui/typeck/typeck_type_placeholder_item.stderr

@@ -443,7 +443,7 @@ error[E0121]: the placeholder `_` is not allowed within types on item signatures
 LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);
    |          ^ not allowed in type signatures
    |
-note: however, the inferred type `Map<Filter<std::ops::Range<i32>, [closure@$DIR/typeck_type_placeholder_item.rs:229:29: 229:32]>, [closure@$DIR/typeck_type_placeholder_item.rs:229:49: 229:52]>` cannot be named
+note: however, the inferred type `Map<Filter<Range<i32>, [closure@typeck_type_placeholder_item.rs:229:29]>, [closure@typeck_type_placeholder_item.rs:229:49]>` cannot be named
   --> $DIR/typeck_type_placeholder_item.rs:229:14
    |
 LL | const _: _ = (1..10).filter(|x| x % 2 == 0).map(|x| x * x);