use typeck root when checking closure oblig

Author: lcnr

compiler/rustc_hir_analysis/src/check/check.rs

@@ -1554,14 +1554,16 @@ fn opaque_type_cycle_error(
     err.emit()
 }
 
+// FIXME(@lcnr): This should not be computed per coroutine, but instead once for
+// each typeck root.
 pub(super) fn check_coroutine_obligations(
     tcx: TyCtxt<'_>,
     def_id: LocalDefId,
 ) -> Result<(), ErrorGuaranteed> {
     debug_assert!(tcx.is_coroutine(def_id.to_def_id()));
 
     let typeck = tcx.typeck(def_id);
-    let param_env = tcx.param_env(def_id);
+    let param_env = tcx.param_env(typeck.hir_owner.def_id);
 
     let coroutine_interior_predicates = &typeck.coroutine_interior_predicates[&def_id];
     debug!(?coroutine_interior_predicates);

tests/ui/traits/next-solver/normalize-async-closure-in-trait.rs

@@ -1,5 +1,5 @@
 //@ compile-flags: -Znext-solver
-//@ known-bug: unknown
+//@ check-pass
 //@ edition:2021
 
 trait Foo {