From 64d98f8ee037282c35007b64c2649055c56af1db Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:03 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/type-alias-impl-trait/issue-90400-2.rs | 37 +++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 tests/ui/type-alias-impl-trait/issue-90400-2.rs

(limited to 'tests/ui/type-alias-impl-trait/issue-90400-2.rs')

diff --git a/tests/ui/type-alias-impl-trait/issue-90400-2.rs b/tests/ui/type-alias-impl-trait/issue-90400-2.rs
new file mode 100644
index 000000000..4c6e893c1
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/issue-90400-2.rs
@@ -0,0 +1,37 @@
+// Regression test for #90400,
+// taken from https://github.com/rust-lang/rust/issues/90400#issuecomment-954927836
+
+#![feature(type_alias_impl_trait)]
+
+trait Bar {
+    fn bar(&self);
+}
+
+trait Baz {
+    fn baz(&self);
+}
+
+trait Foo {
+    type FooFn<B>: Baz;
+
+    fn foo<B: Bar>(&self, bar: B) -> Self::FooFn<B>;
+}
+
+struct MyFoo;
+impl Foo for MyFoo {
+    type FooFn<B> = impl Baz;
+
+    fn foo<B: Bar>(&self, bar: B) -> Self::FooFn<B> {
+        MyBaz(bar) //~ ERROR: the trait bound `B: Bar` is not satisfied
+    }
+}
+
+struct MyBaz<B: Bar>(B);
+impl<B: Bar> Baz for MyBaz<B> {
+    fn baz(&self) {}
+}
+
+fn main() {
+    let boom: <MyFoo as Foo>::FooFn<u32> = unsafe { core::mem::zeroed() };
+    boom.baz();
+}
-- 
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