1 files changed, 13 insertions, 0 deletions
diff --git a/tests/ui/consts/qualif_overwrite.rs b/tests/ui/consts/qualif_overwrite.rs
new file mode 100644
index 000000000..aae4e41ff
--- /dev/null
+++ b/tests/ui/consts/qualif_overwrite.rs
@@ -0,0 +1,13 @@
+use std::cell::Cell;
+
+// this is overly conservative. The reset to `None` should clear `a` of all qualifications
+// while we could fix this, it would be inconsistent with `qualif_overwrite_2.rs`.
+// We can fix this properly in the future by allowing constants that do not depend on generics
+// to be checked by an analysis on the final value instead of looking at the body.
+const FOO: &Option<Cell<usize>> = {
+    let mut a = Some(Cell::new(0));
+    a = None; // sets `qualif(a)` to `qualif(a) | qualif(None)`
+    &{a} //~ ERROR cannot refer to interior mutable
+};
+
+fn main() {}