1 files changed, 46 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/apply-native-arguments-object.js b/js/src/jit-test/tests/ion/apply-native-arguments-object.js
new file mode 100644
index 0000000000..e06a5e0965
--- /dev/null
+++ b/js/src/jit-test/tests/ion/apply-native-arguments-object.js
@@ -0,0 +1,46 @@
+load(libdir + "array-compare.js");
+
+const xs = [
+  // Zero arguments.
+  [],
+
+  // Single argument.
+  [1],
+
+  // Few arguments. Even number of arguments.
+  [1, 2],
+
+  // Few arguments. Odd number of arguments.
+  [1, 2, 3],
+
+  // Many arguments. Even number of arguments.
+  [1, 2, 3, 4, 5, 6, 7, 8, 9, 0],
+
+  // Many arguments. Odd number of arguments.
+  [1, 2, 3, 4, 5, 6, 7, 8, 9],
+];
+
+function escape() {
+  with ({}) ;
+}
+
+function f() {
+  // Let |arguments| escape to force the allocation of an arguments object.
+  escape(arguments);
+
+  // FunApply to a native function with an arguments object.
+  return Array.apply(null, arguments);
+}
+
+// Don't inline |f| into the top-level script.
+with ({}) ;
+
+for (let i = 0; i < 400; ++i) {
+  let x = xs[i % xs.length];
+
+  // NB: Array(1) creates the array `[,]`.
+  let expected = x.length !== 1 ? x : [,];
+
+  let result = f.apply(null, x);
+  assertEq(arraysEqual(result, expected), true);
+}