1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/gc-02.js b/js/src/jit-test/tests/debug/gc-02.js
new file mode 100644
index 000000000..4055650c7
--- /dev/null
+++ b/js/src/jit-test/tests/debug/gc-02.js
@@ -0,0 +1,28 @@
+// Dispatching an event to a debugger must keep enough of it gc-alive to avoid
+// crashing.
+
+var g = newGlobal();
+var hits;
+
+function addDebug() {
+    // The loop is here to defeat the conservative GC. :-\
+    for (var i = 0; i < 4; i++) {
+        var dbg = new Debugger(g);
+        dbg.onDebuggerStatement = function (stack) {
+            hits++;
+            this.enabled = false;
+            this.onDebuggerStatement = undefined;
+            gc();
+        };
+        if (i > 0) {
+            dbg.enabled = false;
+            dbg.onDebuggerStatement = undefined;
+            dbg = null;
+        }
+    }
+}
+
+addDebug();
+hits = 0;
+g.eval("debugger;");
+assertEq(hits, 1);