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-rw-r--r--js/src/jit-test/tests/auto-regress/bug720396.js11
1 files changed, 11 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/auto-regress/bug720396.js b/js/src/jit-test/tests/auto-regress/bug720396.js
new file mode 100644
index 0000000000..8244185a9e
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/bug720396.js
@@ -0,0 +1,11 @@
+// |jit-test| error:TypeError
+
+// Binary: cache/js-dbg-64-1962ca549264-linux
+// Flags:
+//
+
+var g = newGlobal();
+var dbg1 = new Debugger;
+var gw1 = dbg1.addDebuggee(g);
+var dbg2 = new Debugger;
+var gw2 = dbg2.addDebuggee((gw1.__proto__));