1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/static/static-mut-foreign-requires-unsafe.rs b/src/test/ui/static/static-mut-foreign-requires-unsafe.rs
new file mode 100644
index 000000000..4f96acb33
--- /dev/null
+++ b/src/test/ui/static/static-mut-foreign-requires-unsafe.rs
@@ -0,0 +1,12 @@
+// revisions: mir thir
+// [thir]compile-flags: -Z thir-unsafeck
+
+extern "C" {
+    static mut a: i32;
+}
+
+fn main() {
+    a += 3; //~ ERROR: requires unsafe
+    a = 4; //~ ERROR: requires unsafe
+    let _b = a; //~ ERROR: requires unsafe
+}