1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/gc/bug-1647747-debugger-weakmark.js b/js/src/jit-test/tests/gc/bug-1647747-debugger-weakmark.js
new file mode 100644
index 0000000000..4eb4944c27
--- /dev/null
+++ b/js/src/jit-test/tests/gc/bug-1647747-debugger-weakmark.js
@@ -0,0 +1,17 @@
+var g27 = newGlobal({newCompartment: true});
+g27.debuggeeGlobal = this;
+g27.eval(`
+  dbg = new Debugger(debuggeeGlobal);
+  dbg.onExceptionUnwind = function (frame, exc) {};
+`);
+s45 = newGlobal({newCompartment: true});
+try {
+  evalcx(`
+      function h(h) {}
+      h.valueOf=g;
+  `, s45);
+} catch (x) {}
+try {
+  evalcx("throw h", s45)
+} catch (x) {}
+gcslice(100000);