1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/rust/compile/issue-3174.rs b/gcc/testsuite/rust/compile/issue-3174.rs
new file mode 100644
index 0000000..87588e1
--- /dev/null
+++ b/gcc/testsuite/rust/compile/issue-3174.rs
@@ -0,0 +1,28 @@
+extern "C" {
+    fn printf(s: *const i8, ...);
+}
+
+enum Option {
+    Some(i32),
+    None,
+}
+
+impl Option {
+    fn add(&mut self) {
+        match *self {
+            Option::Some(ref mut a) => *a += 1,
+            Option::None => {}
+        }
+    }
+}
+
+fn main() {
+    unsafe {
+        let mut a = Option::None;
+        a.add();
+        let _s = "%d\n\0";
+        let _s = _s as *const str;
+        let s = _s as *const i8;
+        printf(s, a);
+    }
+}