v8/test/mjsunit/big-array-literal.js

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// Copyright 2009 the V8 project authors. All rights reserved.
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// On MacOS, this test needs a stack size of at least 538 kBytes.
// Flags: --stack-size=600
// Test that we can make large object literals that work.
// Also test that we can attempt to make even larger object literals without
// crashing.
function testLiteral(size, array_in_middle) {
print(size);
var f;
// Build object-literal string.
var literal = "function f() { return ";
for (var i = 0; i < size; i++) {
literal += "[";
}
literal += array_in_middle ? " [42.2]" : "{a:42.2}";
for (var i = 0; i < size; i++) {
literal += "]";
}
literal += "; }";
// Create the object literal.
eval(literal);
var x = f();
// Check that the properties have the expected values.
for (var i = 0; i < size; i++) {
x = x[0];
}
if (array_in_middle) {
assertEquals(42.2, x[0]), "x array in middle";
x[0] = 41.2;
} else {
assertEquals(42.2, x.a, "x object in middle");
x.a = 41.2;
}
var y = f();
for (var i = 0; i < size; i++) {
y = y[0];
}
if (array_in_middle) {
assertEquals(42.2, y[0], "y array in middle");
y[0] = 41.2;
} else {
assertEquals(42.2, y.a, "y object in middle");
y.a = 41.2;
}
}
// The sizes to test.
var sizes = [1, 2, 100, 200, 300];
// Run the test.
for (var i = 0; i < sizes.length; i++) {
testLiteral(sizes[i], false);
testLiteral(sizes[i], true);
}
function testLiteralAndCatch(size) {
var big_enough = false;
try {
testLiteral(size, false);
} catch (e) {
big_enough = true;
}
try {
testLiteral(size, true);
} catch (e) {
big_enough = true;
}
return big_enough;
}
// Catch stack overflows.
testLiteralAndCatch(1000) ||
testLiteralAndCatch(20000) ||
testLiteralAndCatch(200000);