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, 33 insertions, 0 deletions

diff --git a/src/test/ui/never_type/issue-44402.rs b/src/test/ui/never_type/issue-44402.rs
new file mode 100644
index 000000000..699e480df
--- /dev/null
+++ b/src/test/ui/never_type/issue-44402.rs
@@ -0,0 +1,33 @@
+// check-pass
+
+#![allow(dead_code)]
+#![feature(never_type)]
+#![feature(exhaustive_patterns)]
+
+// Regression test for inhabitedness check. The old
+// cache used to cause us to incorrectly decide
+// that `test_b` was invalid.
+
+struct Foo {
+    field1: !,
+    field2: Option<&'static Bar>,
+}
+
+struct Bar {
+    field1: &'static Foo
+}
+
+fn test_a() {
+    let x: Option<Foo> = None;
+    match x { None => () }
+}
+
+fn test_b() {
+    let x: Option<Bar> = None;
+    match x {
+        Some(_) => (),
+        None => ()
+    }
+}
+
+fn main() { }