1 files changed, 17 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/debug/bug1488163.js b/js/src/jit-test/tests/debug/bug1488163.js
new file mode 100644
index 0000000000..9fe9d783fb
--- /dev/null
+++ b/js/src/jit-test/tests/debug/bug1488163.js
@@ -0,0 +1,17 @@
+async function f() {
+    // Enough variables that SM will eventually decide to create a lookup table
+    // for this scope.
+    var q0, q1, q2, q3, q4, q5, q6, q7, q8, q9;
+}
+
+var g = newGlobal({newCompartment: true});
+g.parent = this;
+g.eval(`
+    var dbg = new Debugger(parent);
+    dbg.onEnterFrame = frame => {};
+`);
+
+// Fragile: Trigger Shape::hashify() for the shape of the environment in f
+// under a call to GetGeneratorObjectForFrame from the Debugger.
+for (let i = 0; i < 3; i++)
+    f();