1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/sepcomp/sepcomp-fns-backwards.rs b/tests/ui/sepcomp/sepcomp-fns-backwards.rs
new file mode 100644
index 000000000..f56769e2b
--- /dev/null
+++ b/tests/ui/sepcomp/sepcomp-fns-backwards.rs
@@ -0,0 +1,33 @@
+// run-pass
+#![allow(dead_code)]
+// compile-flags: -C codegen-units=3
+
+// Test references to items that haven't been codegened yet.
+
+// Generate some code in the first compilation unit before declaring any
+// modules.  This ensures that the first module doesn't go into the same
+// compilation unit as the top-level module.
+
+fn pad() -> usize { 0 }
+
+mod b {
+    pub fn three() -> usize {
+        ::one() + ::a::two()
+    }
+}
+
+mod a {
+    pub fn two() -> usize {
+        ::one() + ::one()
+    }
+}
+
+fn one() -> usize {
+    1
+}
+
+fn main() {
+    assert_eq!(one(), 1);
+    assert_eq!(a::two(), 2);
+    assert_eq!(b::three(), 3);
+}