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-rw-r--r--js/src/jit-test/tests/debug/Frame-identity-04.js20
1 files changed, 20 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/Frame-identity-04.js b/js/src/jit-test/tests/debug/Frame-identity-04.js
new file mode 100644
index 000000000..7aea809b0
--- /dev/null
+++ b/js/src/jit-test/tests/debug/Frame-identity-04.js
@@ -0,0 +1,20 @@
+// Test that on-stack Debugger.Frames are not GC'd even if they are only reachable
+// from the js::Debugger::frames table.
+
+var g = newGlobal();
+g.eval("function f(n) { if (n) f(n - 1); debugger; }");
+var dbg = new Debugger(g);
+var hits = 0;
+dbg.onDebuggerStatement = function (frame) {
+ if (hits === 0) {
+ for (; frame; frame = frame.older)
+ frame.seen = true;
+ } else {
+ for (; frame; frame = frame.older)
+ assertEq(frame.seen, true);
+ }
+ gc();
+ hits++;
+};
+g.f(20);
+assertEq(hits, 21);