From a4b7ed7a42c716ab9f05e351f003d589124fd55d Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:18:58 +0200
Subject: Adding upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/coercion/coerce-unify-return.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100644 tests/ui/coercion/coerce-unify-return.rs

(limited to 'tests/ui/coercion/coerce-unify-return.rs')

diff --git a/tests/ui/coercion/coerce-unify-return.rs b/tests/ui/coercion/coerce-unify-return.rs
new file mode 100644
index 000000000..95a7ee8fe
--- /dev/null
+++ b/tests/ui/coercion/coerce-unify-return.rs
@@ -0,0 +1,19 @@
+// run-pass
+// Check that coercions unify the expected return type of a polymorphic
+// function call, instead of leaving the type variables as they were.
+
+// pretty-expanded FIXME #23616
+
+struct Foo;
+impl Foo {
+    fn foo<T>(self, x: T) -> Option<T> { Some(x) }
+}
+
+pub fn main() {
+    let _: Option<fn()> = Some(main);
+    let _: Option<fn()> = Foo.foo(main);
+
+    // The same two cases, with implicit type variables made explicit.
+    let _: Option<fn()> = Some::<_>(main);
+    let _: Option<fn()> = Foo.foo::<_>(main);
+}
-- 
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