1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/backtrace/auxiliary/dylib-dep-helper.rs b/tests/ui/backtrace/auxiliary/dylib-dep-helper.rs
new file mode 100644
index 00000000000..565d8b65de0
--- /dev/null
+++ b/tests/ui/backtrace/auxiliary/dylib-dep-helper.rs
@@ -0,0 +1,19 @@
+//@ compile-flags: -g -Cstrip=none -Cforce-frame-pointers=yes
+
+#![crate_type = "cdylib"]
+#![crate_type = "rlib"]
+
+#![allow(improper_ctypes_definitions)]
+
+type Pos = (&'static str, u32);
+
+macro_rules! pos {
+    () => {
+        (file!(), line!())
+    };
+}
+
+#[no_mangle]
+pub extern "C" fn foo(outer: Pos, inner: fn(Pos, Pos)) {
+    inner(outer, pos!());
+}