574088 - permanent orange tests on 64-bit VC10 win7 in js1_5/Regress/regress-256798.js

Status: RESOLVED WORKSFORME

(Core :: JavaScript Engine, defect)

Description

[[e-mail] (:bhearsum)]

Logs:
REFTEST TEST-UNEXPECTED-FAIL | file:///C:/talos-slave/mozilla-central-w764-opt-u-jsreftest/build/jsreftest/tests/jsreftest.html?test=js1_5/Regress/regress-256798.js | regexp zero-width positive lookahead Section 2 of test -  Expected value ',aaa', Actual value 'aaa,aaa'  item 2
REFTEST TEST-UNEXPECTED-FAIL | file:///C:/talos-slave/mozilla-central-w764-opt-u-jsreftest/build/jsreftest/tests/jsreftest.html?test=js1_5/Regress/regress-256798.js | regexp zero-width positive lookahead Section 3 of test -  Expected value 'b,aaa', Actual value 'baaa,aaa'  item 3

Comment 1

[Makoto Kato [:m_kato]]

It may be compiler issue?

Using VC10 (opt)

bash"-3.1$ ../objdir-win64-vc10/dist/bin/js
js> /(?=(a+))/.exec("baaabac")
["aaa", "aaa"]

Using VC9SP1 (opt)

bash"-3.1$ ../objdir-win64-vc9/dist/bin/js
js> /(?=(a+))/.exec("baaabac")
["", "aaa"]


All failure cases of jsreftest are only on VC10.  If using VC9SP1, jsreftest passes.

Comment 2

[[e-mail] (:bhearsum)]

I'm not sure, but we're switching back to VS9 on this platform, so we'll find out in a few days.

Comment 3

[Chad Austin]

Yup, looks VC10-related. This is affecting IMVU's integration. Any ideas?

I am going to look for any changes to jsregexp.cpp through Firefox 4.

Comment 4

[Makoto Kato [:m_kato]]

(In reply to comment #3)
> Yup, looks VC10-related. This is affecting IMVU's integration. Any ideas?
> 
> I am going to look for any changes to jsregexp.cpp through Firefox 4.

Not repro on VC10 SP1 with latest tracemonkey.