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, 19 insertions, 0 deletions

diff --git a/src/test/ui/rfc-1445-restrict-constants-in-patterns/issue-61188-match-slice-forbidden-without-eq.rs b/src/test/ui/rfc-1445-restrict-constants-in-patterns/issue-61188-match-slice-forbidden-without-eq.rs
new file mode 100644
index 000000000..2a915d61e
--- /dev/null
+++ b/src/test/ui/rfc-1445-restrict-constants-in-patterns/issue-61188-match-slice-forbidden-without-eq.rs
@@ -0,0 +1,19 @@
+// Issue 61188 pointed out a case where we hit an ICE during code gen:
+// the compiler assumed that `PartialEq` was always implemented on any
+// use of a `const` item in a pattern context, but the pre-existing
+// structural-match checking was too shallow
+// (see rust-lang/rust#62307), and so we hit cases where we were
+// trying to dispatch to `PartialEq` on types that did not implement
+// that trait.
+
+struct B(i32);
+
+const A: &[B] = &[];
+
+pub fn main() {
+    match &[][..] {
+        A => (),
+        //~^ ERROR must be annotated with `#[derive(PartialEq, Eq)]`
+        _ => (),
+    }
+}