1 files changed, 34 insertions, 0 deletions
diff --git a/js/xpconnect/tests/chrome/test_bug732665_meta.js b/js/xpconnect/tests/chrome/test_bug732665_meta.js
new file mode 100644
index 0000000000..92bf9066b3
--- /dev/null
+++ b/js/xpconnect/tests/chrome/test_bug732665_meta.js
@@ -0,0 +1,34 @@
+/* globals stackPointerInfo */
+
+var stackBottom = stackPointerInfo();
+var stackTop = stackBottom;
+
+function nearNativeStackLimit() {
+  function inner() {
+    try {
+      stackTop = stackPointerInfo();
+      // eslint-disable-next-line no-eval
+      var stepsFromLimit = eval("inner()"); // Use eval to force a number of native stackframes to be created.
+      return stepsFromLimit + 1;
+    } catch (e) {
+      // It would be nice to check here that the exception is actually an
+      // over-recursion here. But doing so would require toString()ing the
+      // exception, which we may not have the stack space to do.
+      return 1;
+    }
+  }
+  return inner();
+}
+
+var nbFrames = nearNativeStackLimit();
+var frameSize = stackBottom - stackTop;
+print(
+  "Max stack size:",
+  frameSize,
+  "bytes",
+  "\nMaximum number of frames:",
+  nbFrames,
+  "\nAverage frame size:",
+  Math.ceil(frameSize / nbFrames),
+  "bytes"
+);