893726 - Assertion failure: store->ptr()->type() == MIRType_Int32, at ion/TypePolicy.cpp:565

Status: RESOLVED DUPLICATE of bug 893732

(Core :: JavaScript Engine, defect)

Description

[Christian Holler (:decoder)]

The following testcase asserts on mozilla-central revision 18467a85acf6 (run with --fuzzing-safe --ion-eager):


var buf = serialize(new Date(NaN));
var n =  -(8.64e15 + 1);
var nbuf = serialize(n);
for (var j = 0; j < 8; j++)
  buf[j + (0.00000000123)] = nbuf[j];

Comment 1

[Christian Holler (:decoder)]

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

Comment 2

[Christian Holler (:decoder)]

Marked s-s because I don't know what the type mismatch in this assertion could cause.

Comment 3

[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/0670cdaf7e9c
user:        Brian Hackett
date:        Thu Jul 11 15:08:26 2013 -0600
summary:     Bug 891400 - Improve pattern matching on static typed array accesses, r=jandem.

This iteration took 341.676 seconds to run.

Comment 4

[Christian Holler (:decoder)]

Needinfo from Brian based on comment 3 :)

Comment 5

[Brian Hackett [Laid off!]]

This is slightly different from bug 893732 (affects stores rather than loads) but will be fixed by that bug.