Add a test for rust-lang#57781

varkor · Feb 26, 2019 · 0b2f320 · 0b2f320
1 parent d76a632
commit 0b2f320
Showing 1 changed file with 20 additions and 0 deletions.
diff --git a/src/test/ui/issues/issue-57781.rs b/src/test/ui/issues/issue-57781.rs
@@ -0,0 +1,20 @@
+// run-pass
+
+use std::cell::UnsafeCell;
+use std::collections::HashMap;
+
+struct OnceCell<T> {
+    _value: UnsafeCell<Option<T>>,
+}
+
+impl<T> OnceCell<T> {
+    const INIT: OnceCell<T> = OnceCell {
+        _value: UnsafeCell::new(None),
+    };
+}
+
+pub fn crash<K, T>() {
+    let _ = OnceCell::<HashMap<K, T>>::INIT;
+}
+
+fn main() {}