Merging upstream version 1.68.2+dfsg1.

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

1 files changed, 26 insertions, 0 deletions

diff --git a/tests/ui/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-direct-struct-embedded.rs b/tests/ui/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-direct-struct-embedded.rs
new file mode 100644
index 000000000..7623839fd
--- /dev/null
+++ b/tests/ui/rfc-1445-restrict-constants-in-patterns/cant-hide-behind-direct-struct-embedded.rs
@@ -0,0 +1,26 @@
+// This is part of a set of tests exploring the different ways a
+// structural-match ADT might try to hold a
+// non-structural-match in hidden manner that lets matches
+// through that we had intended to reject.
+//
+// See discussion on rust-lang/rust#62307 and rust-lang/rust#62339
+
+struct NoDerive(#[allow(unused_tuple_struct_fields)] i32);
+
+// This impl makes NoDerive irreflexive.
+impl PartialEq for NoDerive { fn eq(&self, _: &Self) -> bool { false } }
+
+impl Eq for NoDerive { }
+
+#[derive(PartialEq, Eq)]
+struct WrapInline(NoDerive);
+
+const WRAP_DIRECT_INLINE: WrapInline = WrapInline(NoDerive(0));
+
+fn main() {
+    match WRAP_DIRECT_INLINE {
+        WRAP_DIRECT_INLINE => { panic!("WRAP_DIRECT_INLINE matched itself"); }
+        //~^ ERROR must be annotated with `#[derive(PartialEq, Eq)]`
+        _ => { println!("WRAP_DIRECT_INLINE did not match itself"); }
+    }
+}