935006 - Assertion failure: slotInRange(slot), at ../vm/ObjectImpl.h:1339 or Crash [@ getSlotAddressUnchecked]

Status: VERIFIED FIXED

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on mozilla-central revision 770de5942471 (threadsafe build, no options required):


function testx() {
var BUGNUMBER = '';
var summary = '';
var actual = '';
test(BUGNUMBER);
function test() {
  try   {
    (function () { eval("'foo'.b()", arguments) })();
  }  catch(ex)  {
    actual = ex + '';
  }
}
} testx();

Comment 1

[Christian Holler (:decoder)]

Attachment: [crash-signature] Machine-readable crash signature

Comment 2

[Christian Holler (:decoder)]

JSBugMon: Bisection requested, result:
autoBisect shows this is probably related to the following changeset:

The first bad revision is:
changeset:   http://hg.mozilla.org/mozilla-central/rev/495a9c210b91
user:        Jan de Mooij
date:        Mon Nov 04 11:40:24 2013 +0100
summary:     Bug 933798 - Don't unnecessarily deoptimize name accesses in try blocks in lazily parsed functions. r=bhackett

This iteration took 430.105 seconds to run.

Comment 3

[Christian Holler (:decoder)]

JSBugMon: The testcase found in this bug no longer reproduces (tried revision 5446435cc94a).

Comment 4

[Gary Kwong [:gkw] [:nth10sd] (NOT official MoCo now)]

This was fixed by backing out bug 933798.

Comment 5

[Christian Holler (:decoder)]

JSBugMon: This bug has been automatically verified fixed.