From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:02:58 +0200
Subject: Adding upstream version 1.64.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 src/test/ui/typeck/project-cache-issue-37154.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/test/ui/typeck/project-cache-issue-37154.rs

(limited to 'src/test/ui/typeck/project-cache-issue-37154.rs')

diff --git a/src/test/ui/typeck/project-cache-issue-37154.rs b/src/test/ui/typeck/project-cache-issue-37154.rs
new file mode 100644
index 000000000..b10239c22
--- /dev/null
+++ b/src/test/ui/typeck/project-cache-issue-37154.rs
@@ -0,0 +1,21 @@
+// run-pass
+
+#![allow(dead_code)]
+// Regression test for #37154: the problem here was that the cache
+// results in a false error because it was caching placeholder results
+// even after those placeholder regions had been popped.
+
+trait Foo {
+    fn method(&self) {}
+}
+
+struct Wrapper<T>(T);
+
+impl<T> Foo for Wrapper<T> where for<'a> &'a T: IntoIterator<Item=&'a ()> {}
+
+fn f(x: Wrapper<Vec<()>>) {
+    x.method(); // This works.
+    x.method(); // error: no method named `method`
+}
+
+fn main() { }
-- 
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