1 files changed, 28 insertions, 0 deletions
diff --git a/src/test/ui/abi/extern/auxiliary/extern-crosscrate-source.rs b/src/test/ui/abi/extern/auxiliary/extern-crosscrate-source.rs
new file mode 100644
index 000000000..9c61518b9
--- /dev/null
+++ b/src/test/ui/abi/extern/auxiliary/extern-crosscrate-source.rs
@@ -0,0 +1,28 @@
+#![crate_name = "externcallback"]
+#![crate_type = "lib"]
+#![feature(rustc_private)]
+
+extern crate libc;
+
+pub mod rustrt {
+    extern crate libc;
+
+    #[link(name = "rust_test_helpers", kind = "static")]
+    extern "C" {
+        pub fn rust_dbg_call(
+            cb: extern "C" fn(libc::uintptr_t) -> libc::uintptr_t,
+            data: libc::uintptr_t,
+        ) -> libc::uintptr_t;
+    }
+}
+
+pub fn fact(n: libc::uintptr_t) -> libc::uintptr_t {
+    unsafe {
+        println!("n = {}", n);
+        rustrt::rust_dbg_call(cb, n)
+    }
+}
+
+pub extern "C" fn cb(data: libc::uintptr_t) -> libc::uintptr_t {
+    if data == 1 { data } else { fact(data - 1) * data }
+}