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-rw-r--r--js/xpconnect/tests/chrome/test_bug732665_meta.js34
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"
+);