1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug1001378.js b/js/src/jit-test/tests/ion/bug1001378.js
new file mode 100644
index 000000000..f5953af24
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1001378.js
@@ -0,0 +1,17 @@
+// Test that we don't incorrectly optimize out argument slots from resume
+// points.
+
+function boo() {
+  return foo.arguments[0];
+}
+function foo(a,b,c) {
+  if (a == 0) {
+    a ^= "";
+    return boo();
+  }
+}
+function inlined() {
+  return foo.apply({}, arguments);
+}
+assertEq(inlined(1,2,3), undefined);
+assertEq(inlined(0,2,3), 0);