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[perl #116090] Bleadperl breaks GFUJI/Text-Xslate-1.6001.tar.gz

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From:
perlbug-followup
Date:
December 14, 2012 07:09
Subject:
[perl #116090] Bleadperl breaks GFUJI/Text-Xslate-1.6001.tar.gz
Message ID:
rt-3.6.HEAD-17500-1355468980-1037.116090-75-0@perl.org
# New Ticket Created by  (Andreas J. Koenig) 
# Please include the string:  [perl #116090]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=116090 >


I have no bisect for this one because the test result is random:
sometimes OK, sometimes SEGV. I saw it the first time happen with
v5.17.6-281-g01f4497. The test script that triggered it was
t/010_internals/100_threads.t. I just ran the test with v5.17.6 a
hundred times without crash, so I suppose the problem stems from some
commit after that.

The stack trace:

This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/sand/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/bin/perl...done.
[New LWP 15044]

warning: Can't read pathname for load map: Input/output error.
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/sand/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/bi'.
Program terminated with signal 11, Segmentation fault.
#0  0x00000000004a08f7 in S_hv_delete_common (hash=3467783080, d_flags=68,
    k_flags=0, klen=8, key=0x7fff26e1c7e8 "\b=\322\001", keysv=0x0,
    hv=0x1dc2050, my_perl=0x1c90010) at hv.c:964
964         oentry = &(HvARRAY(hv))[hash & (I32) HvMAX(hv)];
(gdb) bt
#0  0x00000000004a08f7 in S_hv_delete_common (hash=3467783080, d_flags=68,
    k_flags=0, klen=8, key=0x7fff26e1c7e8 "\b=\322\001", keysv=0x0,
    hv=0x1dc2050, my_perl=0x1c90010) at hv.c:964
#1  Perl_hv_common (my_perl=0x1c90010, hv=0x1dc2050, keysv=keysv@entry=0x0,
    key=<optimized out>, key@entry=0x7fff26e1c7e8 "\b=\322\001", klen=8,
    flags=<optimized out>, action=action@entry=68, val=val@entry=0x0,
    hash=<optimized out>, hash@entry=0) at hv.c:398
#2  0x00000000004a1f9e in Perl_hv_common_key_len (
    my_perl=my_perl@entry=0x1c90010, hv=<optimized out>,
    key=key@entry=0x7fff26e1c7e8 "\b=\322\001", klen_i32=klen_i32@entry=8,
    action=action@entry=68, val=val@entry=0x0, hash=hash@entry=0) at hv.c:335
#3  0x00002ac5cfeb1582 in glob_ophook (my_perl=0x1c90010, o=0x1d23d08)
    at Glob.xs:323
#4  0x0000000000420f64 in Perl_op_free (my_perl=0x1c90010, o=0x1d23d08)
    at op.c:703
#5  0x0000000000420f84 in Perl_op_free (my_perl=0x1c90010, o=0x1d23910)
    at op.c:709
#6  0x0000000000420f84 in Perl_op_free (my_perl=0x1c90010, o=0x1d23c60)
    at op.c:709
#7  0x0000000000465bad in Perl_cv_undef (my_perl=my_perl@entry=0x1c90010,
    cv=cv@entry=0x1cdcd40) at pad.c:363
#8  0x00000000004b7738 in Perl_sv_clear (my_perl=my_perl@entry=0x1c90010,
    orig_sv=orig_sv@entry=0x1cdcd40) at sv.c:6165
#9  0x00000000004b7b01 in Perl_sv_free2 (my_perl=my_perl@entry=0x1c90010,
    sv=sv@entry=0x1cdcd40, rc=<optimized out>) at sv.c:6583
#10 0x000000000043f5c5 in S_SvREFCNT_dec (sv=0x1cdcd40, my_perl=0x1c90010)
    at inline.h:62
#11 Perl_gp_free (my_perl=my_perl@entry=0x1c90010, gv=gv@entry=0x1cdccb0)
    at gv.c:2196
#12 0x00000000004b7870 in Perl_sv_clear (my_perl=my_perl@entry=0x1c90010,
    orig_sv=orig_sv@entry=0x1cdccb0) at sv.c:6243
#13 0x00000000004b7b01 in Perl_sv_free2 (my_perl=0x1c90010, sv=0x1cdccb0,
    rc=<optimized out>) at sv.c:6583
#14 0x00000000004ae387 in S_visit (my_perl=my_perl@entry=0x1c90010,
    f=f@entry=0x4b7d10 <do_clean_all>, flags=flags@entry=0, mask=mask@entry=0)
    at sv.c:422
#15 0x00000000004ae7d5 in Perl_sv_clean_all (my_perl=my_perl@entry=0x1c90010)
    at sv.c:629
#16 0x000000000043a752 in perl_destruct (my_perl=0x1c90010) at perl.c:1078
#17 0x000000000041e9d3 in main (argc=2, argv=0x7fff26e1cd68,
    env=0x7fff26e1cd80) at perlmain.c:125


perl -V
-------
Summary of my perl5 (revision 5 version 17 subversion 7) configuration:
  Commit id: 01f449739adb09a21772a83e939e5c96152d636c
  Platform:
    osname=linux, osvers=3.2.0-4-amd64, archname=x86_64-linux-thread-multi-ld
    uname='linux k83 3.2.0-4-amd64 #1 smp debian 3.2.32-1 x86_64 gnulinux '
    config_args='-Dprefix=/home/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da -Dmyhostname=k83 -Dinstallusrbinperl=n -Uversiononly -Dusedevel -des -Ui_db -Duseithreads -Duselongdouble -DDEBUGGING=-g'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=define, usemultiplicity=define
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=define
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2 -g',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.7.2', gccosandvers=''
    intsize=4, longsize=8, ptrsize=8, doublesize=8, byteorder=12345678
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
    ivtype='long', ivsize=8, nvtype='long double', nvsize=16, Off_t='off_t', lseeksize=8
    alignbytes=16, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-lnsl -ldb -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.13'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector'


Characteristics of this binary (from libperl): 
  Compile-time options: HAS_TIMES MULTIPLICITY PERLIO_LAYERS
                        PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP PERL_NEW_COPY_ON_WRITE
                        PERL_PRESERVE_IVUV PERL_USE_DEVEL USE_64_BIT_ALL
                        USE_64_BIT_INT USE_ITHREADS USE_LARGE_FILES
                        USE_LOCALE USE_LOCALE_COLLATE USE_LOCALE_CTYPE
                        USE_LOCALE_NUMERIC USE_LONG_DOUBLE USE_PERLIO
                        USE_PERL_ATOF USE_REENTRANT_API
  Built under linux
  Compiled at Dec 10 2012 18:11:15
  @INC:
    /home/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/lib/site_perl/5.17.7/x86_64-linux-thread-multi-ld
    /home/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/lib/site_perl/5.17.7
    /home/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/lib/5.17.7/x86_64-linux-thread-multi-ld
    /home/src/perl/repoperls/installed-perls/perl/v5.17.6-281-g01f4497/a2da/lib/5.17.7
    .


-- 
andreas


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