1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug678353.js b/js/src/jit-test/tests/ion/bug678353.js
new file mode 100644
index 000000000..714192d12
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug678353.js
@@ -0,0 +1,28 @@
+function f_arginc(a) {
+    var b = a++;
+
+    var c = b+b+b+b+b+b+b+b+b+b;
+    return a + c;
+}
+assertEq(f_arginc(1), 12)
+function f_argdec(a) {
+    var b = a--;
+
+    var c = b+b+b+b+b+b+b+b+b+b;
+    return a + c;
+}
+assertEq(f_argdec(1), 10)
+function f_incarg(a) {
+    var b = ++a;
+
+    var c = b+b+b+b+b+b+b+b+b+b;
+    return a + c;
+}
+assertEq(f_incarg(1), 22)
+function f_decarg(a) {
+    var b = --a;
+
+    var c = b+b+b+b+b+b+b+b+b+b;
+    return a + c;
+}
+assertEq(f_decarg(1), 0)