Rollup merge of #105694 - ouz-a:issue_105689, r=estebank

Don't create dummy if val has escaping bounds var

Skips creating/pushing obligations if val has escaping bounds vars.

Fixes #105689

compiler/rustc_trait_selection/src/traits/wf.rs

@@ -451,6 +451,7 @@ impl<'tcx> WfPredicates<'tcx> {
                 GenericArgKind::Const(ct) => {
                     match ct.kind() {
                         ty::ConstKind::Unevaluated(uv) => {
+                            if !ct.has_escaping_bound_vars() {
                                 let obligations = self.nominal_obligations(uv.def.did, uv.substs);
                                 self.out.extend(obligations);
 
@@ -465,6 +466,7 @@ impl<'tcx> WfPredicates<'tcx> {
                                     predicate,
                                 ));
                             }
+                        }
                         ty::ConstKind::Infer(_) => {
                             let cause = self.cause(traits::WellFormed(None));
 

src/test/ui/const-generics/issue-105689.rs

@@ -0,0 +1,14 @@
+// check-pass
+// edition:2021
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+
+#[allow(unused)]
+async fn foo<'a>() {
+    let _data = &mut [0u8; { 1 + 4 }];
+    bar().await
+}
+
+async fn bar() {}
+
+fn main() {}