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[perl #133981] ext/XS-APItest/t/locale.t crashes on Windows afterpassing a couple tests

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From:
Karl Williamson via RT
Date:
April 30, 2019 00:06
Subject:
[perl #133981] ext/XS-APItest/t/locale.t crashes on Windows afterpassing a couple tests
Message ID:
rt-4.0.24-20720-1556582777-982.133981-15-0@perl.org
On Fri, 26 Apr 2019 00:09:18 -0700, shay wrote:
> On Fri, 05 Apr 2019 01:06:09 -0700, shay wrote:
> > On Fri, 5 Apr 2019 at 08:25, Steve Hay <steve.m.hay@googlemail.com>
> > wrote:
> > >
> > > On Thu, 4 Apr 2019 at 23:31, Karl Williamson
> > > <public@khwilliamson.com> wrote:
> > > >
> > > > On 4/4/19 3:40 PM, Karl Williamson wrote:
> > > > > On 4/4/19 3:09 PM, Steve Hay wrote:
> > > > >> On Thu, 4 Apr 2019 at 21:23, Karl Williamson
> > > > >> <public@khwilliamson.com>
> > > > >> wrote:
> > > > >>>
> > > > >>> On 4/3/19 11:00 AM, Steve Hay (via RT) wrote:
> > > > >>>> # New Ticket Created by  Steve Hay
> > > > >>>> # Please include the string:  [perl #133981]
> > > > >>>> # in the subject line of all future correspondence about
> > > > >>>> this
> > > > >>>> issue.
> > > > >>>> # <URL: https://rt.perl.org/Ticket/Display.html?id=133981 >
> > > > >>>>
> > > > >>>>
> > > > >>>> This is a bug report for perl from
> > > > >>>> steve.m.hay@googlemail.com,
> > > > >>>> generated with the help of perlbug 1.41 running under perl
> > > > >>>> 5.29.10.
> > > > >>>>
> > > > >>>>
> > > > >>>> -----------------------------------------------------------------
> > > > >>>> [Please describe your issue here]
> > > > >>>>
> > > > >>>> Blead is currently crashing at the end of ext/XS-
> > > > >>>> APItest/t/locale.t on
> > > > >>>> Windows (this is Windows 10).
> > > > >>>>
> > > > >>>> I get the same result using VC14 and VC14.1, but VC12 and
> > > > >>>> MinGW-w64
> > > > >>>> GCC 7.1.0 work fine, all x64.
> > > > >>>>
> > > > >>>> Verbose output:
> > > > >>>>
> > > > >>>> ../ext/XS-APItest/t/locale.t ..
> > > > >>>> ok 1 - Gconvert doesn't recognize underlying locale outside
> > > > >>>> 'use
> > > > >>>> locale'
> > > > >>>> ok 2 - Gconvert doesn't recognize underlying locale inside
> > > > >>>> 'use locale'
> > > > >>>> Dubious, test returned 9 (wstat 2304, 0x900)
> > > > >>>> All 2 subtests passed
> > > > >>>>
> > > > >>>> Test Summary Report
> > > > >>>> -------------------
> > > > >>>> ../ext/XS-APItest/t/locale.t (Wstat: 2304 Tests: 2 Failed:
> > > > >>>> 0)
> > > > >>>>     Non-zero exit status: 9
> > > > >>>>     Parse errors: No plan found in TAP output
> > > > >>>> Files=1, Tests=2,  3 wallclock secs ( 0.00 usr +  0.00 sys =
> > > > >>>> 0.00 CPU)
> > > > >>>> Result: FAIL
> > > > >>>
> > > > >>>
> > > > >>> Since I don't have access to a box where this is failing,
> > > > >>> this
> > > > >>> will take
> > > > >>> some back and forth effort.
> > > > >>>
> > > > >>> Let's start by running this single test manually on a
> > > > >>> DEBUGGING
> > > > >>> build
> > > > >>> with -DL and sending me the output.
> > > > >>
> > > > >> STDERR output from the following is attached, along with the
> > > > >> corresponding perl -V:
> > > > >>
> > > > >> D:\Dev\Git\perl\ext\XS-APItest>..\..\perl -DL t\locale.t
> > > > >> 2> out.txt
> > > > >> ok 1 - Gconvert doesn't recognize underlying locale outside
> > > > >> 'use
> > > > >> locale'
> > > > >> ok 2 - Gconvert doesn't recognize underlying locale inside
> > > > >> 'use
> > > > >> locale'
> > > > >>
> > > > >
> > > > > Thanks for that.  I think I now know what the problem is.  To
> > > > > confirm,
> > > > > run the same test but use this branch
> > > > >
> > > > > https://perl5.git.perl.org/perl.git/shortlog/refs/heads/smoke-
> > > > > me/khw-133981
> > > > >
> > > >
> > > > In looking further, I'm not confident that will help.  It looks
> > > > now
> > > > like
> > > > a Windows bug.  Try compiling and running the attached C program.
> > > >
> > > > From the trace you gave, that looks like it will print 3 lines,
> > > > the
> > > > first NULL, and the 2nd and 3rd "iso_latin_16".  But all three
> > > > lines
> > > > should be the same.  If not, its a windows bug.  If they are the
> > > > same,
> > > > its back to the drawing board for me.
> > > >
> > >
> > > You are correct: With VC14, VC14.1 and VC14.2 (VS2015, VS2017 and
> > > VS2019):
> > >
> > > 9: NULL
> > > 13: iso_latin_16
> > > 17: iso_latin_16
> > >
> > > With VC6 thru VC12 (VC++ 6.0 thru VS2013):
> > >
> > > 9: NULL
> > > 13: NULL
> > > 17: NULL
> > >
> > > So, being a Windows (actually, recent VC++?) problem, I'll report
> > > it
> > > to Microsoft :-)
> > >
> >
> > Now reported here:
> >
> > https://developercommunity.visualstudio.com/content/problem/519486/setlocalelc-
> > numeric-iso-latin-16-fails-then-succee.html
> 
> An update on that page acknowledges this as a regression in the
> Universal CRT introduced in the Windows 10 April 2018 Update. It will
> be fixed in the May 2019 update.

So what do we do about this ticket?  Its out of our hands.  I don't see a work around possible.  I'm guessing everybody gets this fix as part of Windows Update.
-- 
Karl Williamson

---
via perlbug:  queue: perl5 status: open
https://rt.perl.org/Ticket/Display.html?id=133981

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