src/third_party/v8/test/mjsunit/stack-traces-2.js

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// Flags: --builtins-in-stack-traces


// Poisonous object that throws a reference error if attempted converted to
// a primitive values.
var thrower = { valueOf: function() { FAIL; },
                toString: function() { FAIL; } };

// Tests that a native constructor function is included in the
// stack trace.
function testTraceNativeConstructor(nativeFunc) {
  var nativeFuncName = nativeFunc.name;
  try {
    new nativeFunc(thrower);
    assertUnreachable(nativeFuncName);
  } catch (e) {
    assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
  }
}

// Tests that a native conversion function is included in the
// stack trace.
function testTraceNativeConversion(nativeFunc) {
  var nativeFuncName = nativeFunc.name;
  try {
    nativeFunc(thrower);
    assertUnreachable(nativeFuncName);
  } catch (e) {
    assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
  }
}

testTraceNativeConversion(String);  // Does ToString on argument.
testTraceNativeConversion(RegExp);  // Does ToString on argument.

testTraceNativeConstructor(String);  // Does ToString on argument.
testTraceNativeConstructor(RegExp);  // Does ToString on argument.