Add toJSON stack overflow test

test/built-ins/JSON/stringify/value-tojson-stack-overflow.js

@@ -0,0 +1,35 @@
+// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-json.stringify
+description: >
+  Stack overflow due to infinite recursion in toJSON throws an expected error.
+---*/
+
+var getStackOverflowError = function() {
+  try {
+    return getStackOverflowError();
+  } catch (err) {
+    return err;
+  }
+};
+
+var StackOverflowError = getStackOverflowError().constructor;
+
+var obj = {};
+obj.toJSON = function() {
+  return {key: obj};
+};
+
+assert.throws(StackOverflowError, function() {
+  JSON.stringify(obj);
+});
+
+var arr = [];
+arr.toJSON = function() {
+  return [arr];
+};
+
+assert.throws(StackOverflowError, function() {
+  JSON.stringify(arr);
+});