1 // Copyright 2008 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 /** 29 * @fileoverview Check that flattening deep trees of cons strings does not 30 * cause stack overflows. 31 */ 32 33 function newdeep(start, depth) { 34 var d = start; 35 for (var i = 0; i < depth; i++) { 36 d = d + "f"; 37 } 38 return d; 39 } 40 41 var default_depth = 110000; 42 43 var deep = newdeep("foo", default_depth); 44 assertEquals('f', deep[0]); 45 46 var cmp1 = newdeep("a", default_depth); 47 var cmp2 = newdeep("b", default_depth); 48 49 assertEquals(-1, cmp1.localeCompare(cmp2), "ab"); 50 51 var cmp2empty = newdeep("c", default_depth); 52 assertTrue(cmp2empty.localeCompare("") > 0, "c"); 53 54 var cmp3empty = newdeep("d", default_depth); 55 assertTrue("".localeCompare(cmp3empty) < 0), "d"; 56 57 var slicer_depth = 1100; 58 59 var slicer = newdeep("slice", slicer_depth); 60 61 for (i = 0; i < slicer_depth + 4; i += 2) { 62 slicer = slicer.slice(1, -1); 63 } 64 65 assertEquals("f", slicer[0]); 66 assertEquals(1, slicer.length); 67
