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      1 // Copyright 2011 the V8 project authors. All rights reserved.
      2 // Redistribution and use in source and binary forms, with or without
      3 // modification, are permitted provided that the following conditions are
      4 // met:
      5 //
      6 //     * Redistributions of source code must retain the above copyright
      7 //       notice, this list of conditions and the following disclaimer.
      8 //     * Redistributions in binary form must reproduce the above
      9 //       copyright notice, this list of conditions and the following
     10 //       disclaimer in the documentation and/or other materials provided
     11 //       with the distribution.
     12 //     * Neither the name of Google Inc. nor the names of its
     13 //       contributors may be used to endorse or promote products derived
     14 //       from this software without specific prior written permission.
     15 //
     16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27 
     28 // Flags: --builtins-in-stack-traces
     29 
     30 
     31 // Poisonous object that throws a reference error if attempted converted to
     32 // a primitive values.
     33 var thrower = { valueOf: function() { FAIL; },
     34                 toString: function() { FAIL; } };
     35 
     36 // Tests that a native constructor function is included in the
     37 // stack trace.
     38 function testTraceNativeConstructor(nativeFunc) {
     39   var nativeFuncName = nativeFunc.name;
     40   try {
     41     new nativeFunc(thrower);
     42     assertUnreachable(nativeFuncName);
     43   } catch (e) {
     44     assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
     45   }
     46 }
     47 
     48 // Tests that a native conversion function is included in the
     49 // stack trace.
     50 function testTraceNativeConversion(nativeFunc) {
     51   var nativeFuncName = nativeFunc.name;
     52   try {
     53     nativeFunc(thrower);
     54     assertUnreachable(nativeFuncName);
     55   } catch (e) {
     56     assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
     57   }
     58 }
     59 
     60 
     61 function testNotOmittedBuiltin(throwing, included) {
     62   try {
     63     throwing();
     64     assertUnreachable(included);
     65   } catch (e) {
     66     assertTrue(e.stack.indexOf(included) >= 0, included);
     67   }
     68 }
     69 
     70 
     71 testTraceNativeConversion(String);  // Does ToString on argument.
     72 testTraceNativeConversion(Number);  // Does ToNumber on argument.
     73 testTraceNativeConversion(RegExp);  // Does ToString on argument.
     74 
     75 testTraceNativeConstructor(String);  // Does ToString on argument.
     76 testTraceNativeConstructor(Number);  // Does ToNumber on argument.
     77 testTraceNativeConstructor(RegExp);  // Does ToString on argument.
     78 testTraceNativeConstructor(Date);    // Does ToNumber on argument.
     79 
     80 // QuickSort has builtins object as receiver, and is non-native
     81 // builtin. Should not be omitted with the --builtins-in-stack-traces flag.
     82 testNotOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) {
     83                                                      (b < a) - (a < b); });
     84                       }, "QuickSort");
     85 
     86 // Not omitted even though ADD from runtime.js is a non-native builtin.
     87 testNotOmittedBuiltin(function(){ thrower + 2; }, "ADD");
     88