Auto merge of #8287 - Jarcho:iter_not_returning_iterator_8285, r=Manishearth

Erase late bound regions in `iter_not_returning_iterator`

fixes #8285

changelog: None

Author: bors

clippy_lints/src/iter_not_returning_iterator.rs

@@ -66,7 +66,7 @@ impl<'tcx> LateLintPass<'tcx> for IterNotReturningIterator {
 
 fn check_sig(cx: &LateContext<'_>, name: &str, sig: &FnSig<'_>, fn_id: LocalDefId) {
     if sig.decl.implicit_self.has_implicit_self() {
-        let ret_ty = cx.tcx.fn_sig(fn_id).skip_binder().output();
+        let ret_ty = cx.tcx.erase_late_bound_regions(cx.tcx.fn_sig(fn_id).output());
         let ret_ty = cx
             .tcx
             .try_normalize_erasing_regions(cx.param_env, ret_ty)

tests/ui/iter_not_returning_iterator.rs

@@ -64,4 +64,11 @@ impl S {
     }
 }
 
+struct S2([u8]);
+impl S2 {
+    fn iter(&self) -> core::slice::Iter<u8> {
+        self.0.iter()
+    }
+}
+
 fn main() {}