1// Copyright 2012 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: --stack-size=100
29
30function rec1(a) { rec1(a+1); }
31function rec2(a) { rec3(a+1); }
32function rec3(a) { rec2(a+1); }
33
34// Test stack trace getter and setter.
35try {
36  rec1(0);
37} catch (e) {
38  assertTrue(e.stack.indexOf("rec1") > 0);
39  e.stack = "123";
40  assertEquals("123", e.stack);
41}
42
43// Test setter w/o calling the getter.
44try {
45  rec2(0);
46} catch (e) {
47  assertTrue(e.stack.indexOf("rec2") > 0);
48  assertTrue(e.stack.indexOf("rec3") > 0);
49  e.stack = "123";
50  assertEquals("123", e.stack);
51}
52
53// Test getter to make sure setter does not affect the boilerplate.
54try {
55  rec1(0);
56} catch (e) {
57  assertTrue(e.stack.indexOf("rec1") > 0);
58  assertInstanceof(e, RangeError);
59}
60
61
62// Check setting/getting stack property on the prototype chain.
63function testErrorPrototype(prototype) {
64  var object = {};
65  object.__proto__ = prototype;
66  object.stack = "123";  // Overwriting stack property fails.
67  assertEquals(prototype.stack, object.stack);
68  assertTrue("123" != prototype.stack);
69}
70
71try {
72  rec1(0);
73} catch (e) {
74  e.stack;
75  testErrorPrototype(e);
76}
77
78try {
79  rec1(0);
80} catch (e) {
81  testErrorPrototype(e);
82}
83
84try {
85  throw new Error();
86} catch (e) {
87  testErrorPrototype(e);
88}
89
90Error.stackTraceLimit = 3;
91try {
92  rec1(0);
93} catch (e) {
94  assertEquals(4, e.stack.split('\n').length);
95}
96
97Error.stackTraceLimit = 25.9;
98try {
99  rec1(0);
100} catch (e) {
101  assertEquals(26, e.stack.split('\n').length);
102}
103
104Error.stackTraceLimit = NaN;
105try {
106  rec1(0);
107} catch (e) {
108  assertEquals(1, e.stack.split('\n').length);
109}
110
111// A limit outside the range of integers.
112Error.stackTraceLimit = 1e12;
113try {
114  rec1(0);
115} catch (e) {
116  assertTrue(e.stack.split('\n').length > 100);
117}
118
119Error.stackTraceLimit = Infinity;
120try {
121  rec1(0);
122} catch (e) {
123  assertTrue(e.stack.split('\n').length > 100);
124}
125
126Error.stackTraceLimit = "not a number";
127try {
128  rec1(0);
129} catch (e) {
130  assertEquals(undefined, e.stack);
131  e.stack = "abc";
132  assertEquals("abc", e.stack);
133}
134
135Error.stackTraceLimit = 3;
136Error = "";  // Overwrite Error in the global object.
137try {
138  rec1(0);
139} catch (e) {
140  assertEquals(4, e.stack.split('\n').length);
141}
142