erase late-bound regions in dyn projection types for debuginfo

rust-lang · Mar 16, 2022 · b69b3d0 · b69b3d0
1 parent 461e807
commit b69b3d0
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Showing 2 changed files with 9 additions and 1 deletion.
diff --git a/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs b/compiler/rustc_codegen_ssa/src/debuginfo/type_names.rs
@@ -217,7 +217,8 @@ fn push_debuginfo_type_name<'tcx>(
  let projection_bounds: SmallVec<[_; 4]> = trait_data
  .projection_bounds()
  .map(|bound| {
- let ExistentialProjection { item_def_id, term, .. } = bound.skip_binder();
+ let ExistentialProjection { item_def_id, term, .. } =
+ tcx.erase_late_bound_regions(bound);
  // FIXME(associated_const_equality): allow for consts here
  (item_def_id, term.ty().unwrap())
  })

diff --git a/src/test/ui/debuginfo/late-bound-projection.rs b/src/test/ui/debuginfo/late-bound-projection.rs
@@ -0,0 +1,7 @@
+// build-pass
+// compile-flags: -Cdebuginfo=2 --crate-type=rlib
+// Fixes issue #94998
+
+pub trait Trait {}
+
+pub fn run(_: &dyn FnOnce(&()) -> Box<dyn Trait + '_>) {}