1 files changed, 25 insertions, 0 deletions
diff --git a/src/test/ui/moves/move-guard-same-consts.rs b/src/test/ui/moves/move-guard-same-consts.rs
new file mode 100644
index 000000000..b96ef8e19
--- /dev/null
+++ b/src/test/ui/moves/move-guard-same-consts.rs
@@ -0,0 +1,25 @@
+// #47295: We used to have a hack of special-casing adjacent amtch
+// arms whose patterns were composed solely of constants to not have
+// them linked in the cfg.
+//
+// This was broken for various reasons. In particular, that hack was
+// originally authored under the assunption that other checks
+// elsewhere would ensure that the two patterns did not overlap.  But
+// that assumption did not hold, at least not in the long run (namely,
+// overlapping patterns were turned into warnings rather than errors).
+
+
+
+fn main() {
+    let x: Box<_> = Box::new(1);
+
+    let v = (1, 2);
+
+    match v {
+        (1, 2) if take(x) => (),
+        (1, 2) if take(x) => (), //~ ERROR use of moved value: `x`
+        _ => (),
+    }
+}
+
+fn take<T>(_: T) -> bool { false }