1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/parser/bug-1263355-46.js b/js/src/jit-test/tests/parser/bug-1263355-46.js
new file mode 100644
index 0000000000..e5c3ec1db1
--- /dev/null
+++ b/js/src/jit-test/tests/parser/bug-1263355-46.js
@@ -0,0 +1,23 @@
+setJitCompilerOption("ion.warmup.trigger", 4);
+var lfLogBuffer = `
+function logProxy(object = {}, handler = {}) {
+    var log = [];
+    var proxy = new WeakMap(object, new Proxy(handler, {
+        get(proto) {
+            log.push(propertyKey);
+        }
+    }));
+}
+var {proxy, log} = logProxy();
+`;
+loadFile(lfLogBuffer);
+loadFile(lfLogBuffer);
+loadFile(lfLogBuffer);
+function loadFile(lfVarx) {
+    try {
+      function newFunc(x) {
+        new Function(x)();
+      };
+      newFunc(lfVarx);
+    } catch (lfVare) {}
+}