1 files changed, 35 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/saved-stacks/caching-and-ccws.js b/js/src/jit-test/tests/saved-stacks/caching-and-ccws.js
new file mode 100644
index 000000000..b61e8c325
--- /dev/null
+++ b/js/src/jit-test/tests/saved-stacks/caching-and-ccws.js
@@ -0,0 +1,35 @@
+// Test that the SavedFrame caching doesn't get messed up in the presence of
+// cross-compartment calls.
+
+const funcSource = "function call(f) { return f(); }";
+
+const g1 = newGlobal();
+const g2 = newGlobal();
+
+g1.eval(funcSource);
+g2.eval(funcSource);
+eval(funcSource);
+
+function doSaveStack() {
+  return saveStack();
+}
+
+const captureStacksAcrossCompartmens = () =>
+  [this, g1, g2].map(g => g.call(doSaveStack));
+
+(function f0() {
+  const stacks = [];
+
+  for (var i = 0; i < 2; i++)
+    stacks.push(...captureStacksAcrossCompartmens());
+
+  const [s1, s2, s3, s4, s5, s6] = stacks;
+
+  assertEq(s1 != s2, true);
+  assertEq(s2 != s3, true);
+  assertEq(s3 != s1, true);
+
+  assertEq(s1, s4);
+  assertEq(s2, s5);
+  assertEq(s3, s6);
+}());