diff options
Diffstat (limited to 'js/src/tests/js1_5/extensions/regress-192465.js')
-rw-r--r-- | js/src/tests/js1_5/extensions/regress-192465.js | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/js/src/tests/js1_5/extensions/regress-192465.js b/js/src/tests/js1_5/extensions/regress-192465.js new file mode 100644 index 000000000..4999a2408 --- /dev/null +++ b/js/src/tests/js1_5/extensions/regress-192465.js @@ -0,0 +1,123 @@ +/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +/* + * + * Date: 10 February 2003 + * SUMMARY: Object.toSource() recursion should check stack overflow + * + * See http://bugzilla.mozilla.org/show_bug.cgi?id=192465 + * + * MODIFIED: 27 February 2003 + * + * We are adding an early return to this testcase, since it is causing + * big problems on Linux RedHat8! For a discussion of this issue, see + * http://bugzilla.mozilla.org/show_bug.cgi?id=174341#c24 and following. + * + * + * MODIFIED: 20 March 2003 + * + * Removed the early return and changed |N| below from 1000 to 90. + * Note |make_deep_nest(N)| returns an object graph of length N(N+1). + * So the graph has now been reduced from 1,001,000 to 8190. + * + * With this reduction, the bug still manifests on my WinNT and Linux + * boxes (crash due to stack overflow). So the testcase is again of use + * on those boxes. At the same time, Linux RedHat8 boxes can now run + * the test in a reasonable amount of time. + */ +//----------------------------------------------------------------------------- +var UBound = 0; +var BUGNUMBER = 192465; +var summary = 'Object.toSource() recursion should check stack overflow'; +var status = ''; +var statusitems = []; +var actual = ''; +var actualvalues = []; +var expect= ''; +var expectedvalues = []; + + +/* + * We're just testing that this script will compile and run. + * Set both |actual| and |expect| to a dummy value. + */ +status = inSection(1); +var N = 90; +try +{ + make_deep_nest(N); +} +catch (e) +{ + // An exception is OK, as the runtime can throw one in response to too deep + // recursion. We haven't crashed; good! Continue on to set the dummy values - +} +actual = 1; +expect = 1; +addThis(); + + + +//----------------------------------------------------------------------------- +test(); +//----------------------------------------------------------------------------- + + +/* + * EXAMPLE: + * + * If the global variable |N| is 2, then for |level| == 0, 1, 2, the return + * value of this function will be toSource() of these objects, respectively: + * + * {next:{next:END}} + * {next:{next:{next:{next:END}}}} + * {next:{next:{next:{next:{next:{next:END}}}}}} + * + */ +function make_deep_nest(level) +{ + var head = {}; + var cursor = head; + + for (var i=0; i!=N; ++i) + { + cursor.next = {}; + cursor = cursor.next; + } + + cursor.toSource = function() + { + if (level != 0) + return make_deep_nest(level - 1); + return "END"; + } + + return head.toSource(); +} + + +function addThis() +{ + statusitems[UBound] = status; + actualvalues[UBound] = actual; + expectedvalues[UBound] = expect; + UBound++; +} + + +function test() +{ + enterFunc('test'); + printBugNumber(BUGNUMBER); + printStatus(summary); + + for (var i=0; i<UBound; i++) + { + reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); + } + + exitFunc ('test'); +} |