Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/src/test/ui/type-alias-impl-trait/issue-63263-closure-return.rs b/src/test/ui/type-alias-impl-trait/issue-63263-closure-return.rs
new file mode 100644
index 000000000..7414611a7
--- /dev/null
+++ b/src/test/ui/type-alias-impl-trait/issue-63263-closure-return.rs
@@ -0,0 +1,13 @@
+// Regression test for issue #63263.
+// Tests that we properly handle closures with an explicit return type
+// that return an opaque type.
+
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+
+pub type Closure = impl FnOnce();
+
+fn main() {
+    || -> Closure { || () };
+}