1 files changed, 19 insertions, 0 deletions
diff --git a/src/test/ui/regions/regions-infer-region-in-fn-but-not-type.rs b/src/test/ui/regions/regions-infer-region-in-fn-but-not-type.rs
new file mode 100644
index 000000000..6aa5d8217
--- /dev/null
+++ b/src/test/ui/regions/regions-infer-region-in-fn-but-not-type.rs
@@ -0,0 +1,19 @@
+// run-pass
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![allow(non_camel_case_types)]
+
+
+// check that the &isize here does not cause us to think that `foo`
+// contains region pointers
+// pretty-expanded FIXME #23616
+
+struct foo(Box<dyn FnMut(&isize)+'static>);
+
+fn take_foo<T:'static>(x: T) {}
+
+fn have_foo(f: foo) {
+    take_foo(f);
+}
+
+fn main() {}