1 files changed, 33 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/call-generic-args.js b/js/src/jit-test/tests/ion/call-generic-args.js
new file mode 100644
index 0000000000..e8d88dd04e
--- /dev/null
+++ b/js/src/jit-test/tests/ion/call-generic-args.js
@@ -0,0 +1,33 @@
+// Test that the generic call trampoline passes arguments correctly.
+
+function foo(f) {
+  return f(1);
+}
+
+with ({}) {}
+
+function f1() { return arguments; }
+function f2(x) { return [x]; }
+function f3(x,y) { return [x,y]; }
+function f4(x,y,z) { return [x,y,z]; }
+
+let f5 = f4.bind({});
+let f6 = f4.bind({}, 2);
+let f7 = f4.bind({}, 2, 3);
+
+function assertArrayEq(a,b) {
+  assertEq(a.length, b.length);
+  for (var i = 0; i < a.length; i++) {
+    assertEq(a[i], b[i]);
+  }
+}
+
+for (var i = 0; i < 500; i++) {
+  assertArrayEq(foo(f1), [1]);
+  assertArrayEq(foo(f2), [1]);
+  assertArrayEq(foo(f3), [1, undefined]);
+  assertArrayEq(foo(f4), [1, undefined, undefined]);
+  assertArrayEq(foo(f5), [1, undefined, undefined]);
+  assertArrayEq(foo(f6), [2, 1, undefined]);
+  assertArrayEq(foo(f7), [2, 3, 1]);
+}