1 files changed, 16 insertions, 0 deletions
diff --git a/src/test/ui/consts/const-cast.rs b/src/test/ui/consts/const-cast.rs
new file mode 100644
index 000000000..abeb24121
--- /dev/null
+++ b/src/test/ui/consts/const-cast.rs
@@ -0,0 +1,16 @@
+// run-pass
+#![allow(non_upper_case_globals)]
+
+struct TestStruct {
+    x: *const u8,
+}
+
+unsafe impl Sync for TestStruct {}
+
+extern "C" fn foo() {}
+const x: extern "C" fn() = foo;
+static y: TestStruct = TestStruct { x: x as *const u8 };
+
+pub fn main() {
+    assert_eq!(x as *const u8, y.x);
+}