testSourcePolicy.cpp

Enable keyboard shortcuts

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "mozilla/Utf8.h"  // mozilla::Utf8Unit

#include "js/CompilationAndEvaluation.h"  // JS::CompileFunction, JS::Evaluate

#include "js/GlobalObject.h"              // JS_NewGlobalObject

#include "js/MemoryFunctions.h"

#include "js/SourceText.h"  // JS::Source{Ownership,Text}

#include "jsapi-tests/tests.h"

#include "vm/JSScript.h"

BEGIN_TEST(testBug795104) {

  JS::RealmOptions options;

  options.behaviors().setDiscardSource(true);

  JS::RootedObject g(cx, JS_NewGlobalObject(cx, getGlobalClass(), nullptr,

                                            JS::FireOnNewGlobalHook, options));

  CHECK(g);

  JSAutoRealm ar(cx, g);

  const size_t strLen = 60002;

  char* s = static_cast<char*>(JS_malloc(cx, strLen));

  CHECK(s);

  s[0] = '"';

  memset(s + 1, 'x', strLen - 2);

  s[strLen - 1] = '"';

  JS::SourceText<mozilla::Utf8Unit> srcBuf;

  CHECK(srcBuf.init(cx, s, strLen, JS::SourceOwnership::Borrowed));

  JS::CompileOptions opts(cx);

  // We don't want an rval for our JS::Evaluate call

  opts.setNoScriptRval(true);

  JS::RootedValue unused(cx);

  CHECK(JS::Evaluate(cx, opts, srcBuf, &unused));

  JS::RootedFunction fun(cx);

  JS::RootedObjectVector emptyScopeChain(cx);

  // But when compiling a function we don't want to use no-rval

  // mode, since it's not supported for functions.

  opts.setNoScriptRval(false);

  fun = JS::CompileFunction(cx, emptyScopeChain, opts, "f", 0, nullptr, srcBuf);

  CHECK(fun);

  JS_free(cx, s);

  return true;

END_TEST(testBug795104)