Test case for #3005

src/test/auxiliary/cci_intrinsic.rs

@@ -0,0 +1,19 @@
+#[abi = "rust-intrinsic"]
+extern mod rusti {
+    fn atomic_xchng(&dst: int, src: int) -> int;
+    fn atomic_xchng_acq(&dst: int, src: int) -> int;
+    fn atomic_xchng_rel(&dst: int, src: int) -> int;
+    
+    fn atomic_add(&dst: int, src: int) -> int;
+    fn atomic_add_acq(&dst: int, src: int) -> int;
+    fn atomic_add_rel(&dst: int, src: int) -> int;
+    
+    fn atomic_sub(&dst: int, src: int) -> int;
+    fn atomic_sub_acq(&dst: int, src: int) -> int;
+    fn atomic_sub_rel(&dst: int, src: int) -> int;
+}
+
+#[inline(always)]
+fn atomic_xchng(&dst: int, src: int) -> int {
+    rusti::atomic_xchng(dst, src)
+}

src/test/run-pass/intrinsic-atomics-cc.rs

@@ -0,0 +1,13 @@
+// xfail-fast - check-fast doesn't understand aux-build
+// aux-build:cci_intrinsic.rs
+
+// xfail-check
+
+use cci_intrinsic;
+import cci_intrinsic::atomic_xchng;
+
+fn main() {
+    let mut x = 1;
+    atomic_xchng(x, 5);
+    assert x == 5;
+}