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[perl #132578] BBC List::MoreUtils::XS broken by16ada235c332e017667585e1a5a00ce43a31c529

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From:
Zefram
Date:
December 12, 2017 20:29
Subject:
[perl #132578] BBC List::MoreUtils::XS broken by16ada235c332e017667585e1a5a00ce43a31c529
Message ID:
rt-4.0.24-21972-1513110547-1658.132578-75-0@perl.org
# New Ticket Created by  Zefram 
# Please include the string:  [perl #132578]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=132578 >



This is a bug report for perl from zefram@fysh.org,
generated with the help of perlbug 1.41 running under perl 5.27.7.


-----------------------------------------------------------------
[Please describe your issue here]

List::MoreUtils::XS has acquired a new test failure at core commit
16ada235c332e017667585e1a5a00ce43a31c529 "fix GvSV refcounting in sort".
On affected core versions, its test suite shows

t/xs/occurrences.t .......... 1/? perl: sv.c:6506: Perl_sv_clear: Assertion `((svtype)((sv)->sv_flags & 0xff)) != (svtype)0xff' failed.
t/xs/occurrences.t .......... All 8 subtests passed 

Examining this is complicated by another test failure that shows up
earlier, with debugging builds:

t/xs/arrayify.t ............. panic: XSUB List::MoreUtils::XS::arrayify (XS.c) failed to extend arg stack: base=23e9968, sp=23e99f8, hwm=23e99e0
t/xs/arrayify.t ............. Dubious, test returned 255 (wstat 65280, 0xff00)
No subtests run 

I'm pretty sure that the arrayify.t failure would happen with 5.27.6,
though the distro tested just fine on a non-debugging 5.27.6.  I'll have a
look at that later.  There are also some compilation warnings on threading
builds, picking up definite bugs, that don't cause test failures.
Those are also preexisting and out of scope for this ticket.

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=high
---
Site configuration information for perl 5.27.7:

Configured by zefram at Tue Dec 12 12:07:39 GMT 2017.

Summary of my perl5 (revision 5 version 27 subversion 7) configuration:
  Commit id: 16ada235c332e017667585e1a5a00ce43a31c529
  Platform:
    osname=linux
    osvers=3.16.0-4-amd64
    archname=x86_64-linux-thread-multi
    uname='linux barba.rous.org 3.16.0-4-amd64 #1 smp debian 3.16.43-2+deb8u2 (2017-06-26) x86_64 gnulinux '
    config_args='-des -Dprefix=/home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52 -Duselargefiles -Dusethreads -Uafs -Ud_csh -Uusesfio -Uusenm -Duseshrplib -Dusedevel -Uversiononly -Ui_db -DDEBUGGING'
    hint=recommended
    useposix=true
    d_sigaction=define
    useithreads=define
    usemultiplicity=define
    use64bitint=define
    use64bitall=define
    uselongdouble=undef
    usemymalloc=n
    default_inc_excludes_dot=define
    bincompat5005=undef
  Compiler:
    cc='cc'
    ccflags ='-D_REENTRANT -D_GNU_SOURCE -fwrapv -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_FORTIFY_SOURCE=2'
    optimize='-O2 -g'
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fwrapv -DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'
    ccversion=''
    gccversion='4.9.2'
    gccosandvers=''
    intsize=4
    longsize=8
    ptrsize=8
    doublesize=8
    byteorder=12345678
    doublekind=3
    d_longlong=define
    longlongsize=8
    d_longdbl=define
    longdblsize=16
    longdblkind=3
    ivtype='long'
    ivsize=8
    nvtype='double'
    nvsize=8
    Off_t='off_t'
    lseeksize=8
    alignbytes=8
    prototype=define
  Linker and Libraries:
    ld='cc'
    ldflags =' -fstack-protector-strong -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib/gcc/x86_64-linux-gnu/4.9/include-fixed /usr/include/x86_64-linux-gnu /usr/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib
    libs=-lpthread -lnsl -ldb -ldl -lm -lcrypt -lutil -lc
    perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
    libc=libc-2.19.so
    so=so
    useshrplib=true
    libperl=libperl.so
    gnulibc_version='2.19'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs
    dlext=so
    d_dlsymun=undef
    ccdlflags='-Wl,-E -Wl,-rpath,/home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/lib/5.27.7/x86_64-linux-thread-multi/CORE'
    cccdlflags='-fPIC'
    lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector-strong'


---
@INC for perl 5.27.7:
    /home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/lib/site_perl/5.27.7/x86_64-linux-thread-multi
    /home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/lib/site_perl/5.27.7
    /home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/lib/5.27.7/x86_64-linux-thread-multi
    /home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/lib/5.27.7

---
Environment for perl 5.27.7:
    HOME=/home/zefram
    LANG (unset)
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/zefram/usr/perl/perl_install/perl-git-blead-i64-f52/bin:/home/zefram/pub/x86_64-unknown-linux-gnu/bin:/home/zefram/pub/common/bin:/usr/bin:/bin:/usr/local/bin:/usr/games
    PERL5LIB=
    PERL5OPT=
    PERL5_CPANPLUS_IS_RUNNING=32597
    PERL5_CPAN_IS_RUNNING=32597
    PERLDOC=-oman
    PERL_BADLANG (unset)
    SHELL=/usr/bin/zsh


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