1 files changed, 11 insertions, 0 deletions
diff --git a/src/test/ui/nll/mir_check_cast_unsafe_fn.rs b/src/test/ui/nll/mir_check_cast_unsafe_fn.rs
new file mode 100644
index 000000000..8f55bedfb
--- /dev/null
+++ b/src/test/ui/nll/mir_check_cast_unsafe_fn.rs
@@ -0,0 +1,11 @@
+#![allow(dead_code)]
+
+fn bar<'a>(input: &'a u32, f: fn(&'a u32) -> &'a u32) -> &'static u32 {
+    // Here the NLL checker must relate the types in `f` to the types
+    // in `g`. These are related via the `UnsafeFnPointer` cast.
+    let g: unsafe fn(_) -> _ = f;
+    unsafe { g(input) }
+    //~^ ERROR lifetime may not live long enough
+}
+
+fn main() {}