1 files changed, 21 insertions, 0 deletions
diff --git a/testsuite/tests/rts/atomicinc.c b/testsuite/tests/rts/atomicinc.c
new file mode 100644
index 0000000000..8f1c8bf3ed
--- /dev/null
+++ b/testsuite/tests/rts/atomicinc.c
@@ -0,0 +1,21 @@
+#define THREADED_RTS
+
+#include "Rts.h"
+
+StgWord i;
+
+int main(int argc, char *argv[])
+{
+    StgWord j;
+
+    i = 0;
+    j = atomic_inc(&i);
+    CHECK(j == 1);
+    CHECK(i == 1);
+
+    j = atomic_dec(&i);
+    CHECK(j == 0);
+    CHECK(i == 0);
+
+    return 0;
+}