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, 29 insertions, 0 deletions

diff --git a/src/test/ui/wf/wf-unsafe-trait-obj-match.rs b/src/test/ui/wf/wf-unsafe-trait-obj-match.rs
new file mode 100644
index 000000000..c8731a8ec
--- /dev/null
+++ b/src/test/ui/wf/wf-unsafe-trait-obj-match.rs
@@ -0,0 +1,29 @@
+// Check that we do not allow coercions to object
+// unsafe trait objects in match arms
+
+#![feature(object_safe_for_dispatch)]
+
+trait Trait: Sized {}
+
+struct S;
+
+impl Trait for S {}
+
+struct R;
+
+impl Trait for R {}
+
+fn opt() -> Option<()> {
+    Some(())
+}
+
+fn main() {
+    match opt() {
+        Some(()) => &S,
+        None => &R,  //~ ERROR E0308
+    }
+    let t: &dyn Trait = match opt() { //~ ERROR E0038
+        Some(()) => &S, //~ ERROR E0038
+        None => &R,
+    };
+}