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[perl#57244] Valgrind output with debug-built MAINT33934

From:
Dagfinn Ilmari =?ISO-8859-1?Q?Manns=E5ker?=
Date:
July 24, 2008 10:41
Subject:
[perl#57244] Valgrind output with debug-built MAINT33934
Message ID:
1216910037.18778.102.camel@ilmari-laptop
Here's the valgrind output from 5.8-maint as of today (33934), with
complete symbol and line number information:

$ valgrind ../perl-5.8/bin/perl x1.pl 
==11714== Memcheck, a memory error detector.
==11714== Copyright (C) 2002-2007, and GNU GPL'd, by Julian Seward et al.
==11714== Using LibVEX rev 1804, a library for dynamic binary translation.
==11714== Copyright (C) 2004-2007, and GNU GPL'd, by OpenWorks LLP.
==11714== Using valgrind-3.3.0-Debian, a dynamic binary instrumentation framework.
==11714== Copyright (C) 2000-2007, and GNU GPL'd, by Julian Seward et al.
==11714== For more details, rerun with: -v
==11714== 
==11714== Invalid write of size 4
==11714==    at 0x80D8AED: S_regcppop (regexec.c:248)
==11714==    by 0x80DC607: S_regmatch (regexec.c:3621)
==11714==    by 0x80DD9AE: S_regmatch (regexec.c:2714)
==11714==    by 0x80DFB8D: S_regtry (regexec.c:1912)
==11714==    by 0x80E4C1E: Perl_regexec_flags (regexec.c:1468)
==11714==    by 0x80954BB: Perl_pp_match (pp_hot.c:1337)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714==  Address 0x42577b4 is 0 bytes after a block of size 4 alloc'd
==11714==    at 0x4021BDE: calloc (vg_replace_malloc.c:397)
==11714==    by 0x807AB04: Perl_safesyscalloc (util.c:301)
==11714==    by 0x8129460: Perl_pregcomp (regcomp.c:2115)
==11714==    by 0x80C2EA3: Perl_pp_regcomp (pp_ctl.c:121)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714== 
==11714== Invalid write of size 4
==11714==    at 0x80D8AFC: S_regcppop (regexec.c:249)
==11714==    by 0x80DC607: S_regmatch (regexec.c:3621)
==11714==    by 0x80DD9AE: S_regmatch (regexec.c:2714)
==11714==    by 0x80DFB8D: S_regtry (regexec.c:1912)
==11714==    by 0x80E4C1E: Perl_regexec_flags (regexec.c:1468)
==11714==    by 0x80954BB: Perl_pp_match (pp_hot.c:1337)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714==  Address 0x42577ec is 0 bytes after a block of size 4 alloc'd
==11714==    at 0x4021BDE: calloc (vg_replace_malloc.c:397)
==11714==    by 0x807AB04: Perl_safesyscalloc (util.c:301)
==11714==    by 0x81294A1: Perl_pregcomp (regcomp.c:2116)
==11714==    by 0x80C2EA3: Perl_pp_regcomp (pp_ctl.c:121)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714== 
==11714== Invalid write of size 4
==11714==    at 0x80D8AED: S_regcppop (regexec.c:248)
==11714==    by 0x80DDA05: S_regmatch (regexec.c:2736)
==11714==    by 0x80DFB8D: S_regtry (regexec.c:1912)
==11714==    by 0x80E4C1E: Perl_regexec_flags (regexec.c:1468)
==11714==    by 0x80954BB: Perl_pp_match (pp_hot.c:1337)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714==  Address 0x42577b4 is 0 bytes after a block of size 4 alloc'd
==11714==    at 0x4021BDE: calloc (vg_replace_malloc.c:397)
==11714==    by 0x807AB04: Perl_safesyscalloc (util.c:301)
==11714==    by 0x8129460: Perl_pregcomp (regcomp.c:2115)
==11714==    by 0x80C2EA3: Perl_pp_regcomp (pp_ctl.c:121)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714== 
==11714== Invalid write of size 4
==11714==    at 0x80D8AFC: S_regcppop (regexec.c:249)
==11714==    by 0x80DDA05: S_regmatch (regexec.c:2736)
==11714==    by 0x80DFB8D: S_regtry (regexec.c:1912)
==11714==    by 0x80E4C1E: Perl_regexec_flags (regexec.c:1468)
==11714==    by 0x80954BB: Perl_pp_match (pp_hot.c:1337)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714==  Address 0x42577ec is 0 bytes after a block of size 4 alloc'd
==11714==    at 0x4021BDE: calloc (vg_replace_malloc.c:397)
==11714==    by 0x807AB04: Perl_safesyscalloc (util.c:301)
==11714==    by 0x81294A1: Perl_pregcomp (regcomp.c:2116)
==11714==    by 0x80C2EA3: Perl_pp_regcomp (pp_ctl.c:121)
==11714==    by 0x80745DF: Perl_runops_debug (dump.c:1647)
==11714==    by 0x808BCC5: perl_run (perl.c:2450)
==11714==    by 0x806288C: main (perlmain.c:109)
==11714== 
==11714== ERROR SUMMARY: 4 errors from 4 contexts (suppressed: 21 from 1)
==11714== malloc/free: in use at exit: 115,035 bytes in 994 blocks.
==11714== malloc/free: 2,981 allocs, 1,987 frees, 228,462 bytes allocated.
==11714== For counts of detected errors, rerun with: -v
==11714== searching for pointers to 994 not-freed blocks.
==11714== checked 369,192 bytes.
==11714== 
==11714== LEAK SUMMARY:
==11714==    definitely lost: 0 bytes in 0 blocks.
==11714==      possibly lost: 0 bytes in 0 blocks.
==11714==    still reachable: 115,035 bytes in 994 blocks.
==11714==         suppressed: 0 bytes in 0 blocks.
==11714== Rerun with --leak-check=full to see details of leaked memory.


$ perl -V
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
  Platform:
    osname=linux, osvers=2.6.15.7, archname=i486-linux-gnu-thread-multi
    uname='linux palmer 2.6.15.7 #1 smp thu sep 7 19:42:20 utc 2006 i686 gnulinux '
    config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN -Dcccdlflags=-fPIC -Darchname=i486-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.8 -Darchlib=/usr/lib/perl/5.8 -Dvendorprefix=/usr -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5 -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.8.8 -Dsitearch=/usr/local/lib/perl/5.8.8 -Dman1dir=/usr/share/man/man1 -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1 -Dsiteman3dir=/usr/local/man/man3 -Dman1ext=1 -Dman3ext=3perl -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm -Duseshrplib -Dlibperl=libperl.so.5.8.8 -Dd_dosuid -des'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=define use5005threads=undef useithreads=define usemultiplicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -DTHREADS_HAVE_PIDS -DDEBIAN -fno-strict-aliasing -pipe -I/usr/local/include'
    ccversion='', gccversion='4.2.3 20071123 (prerelease) (Ubuntu 4.2.2-3ubuntu4)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='cc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
    perllibs=-ldl -lm -lpthread -lc -lcrypt
    libc=/lib/libc-2.6.1.so, so=so, useshrplib=true, libperl=libperl.so.5.8.8
    gnulibc_version='2.6.1'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'


Characteristics of this binary (from libperl): 
  Compile-time options: MULTIPLICITY PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP THREADS_HAVE_PIDS USE_ITHREADS
                        USE_LARGE_FILES USE_PERLIO USE_REENTRANT_API
  Built under linux
  Compiled at Nov 27 2007 10:44:36
  @INC:
    /etc/perl
    /usr/local/lib/perl/5.8.8
    /usr/local/share/perl/5.8.8
    /usr/lib/perl5
    /usr/share/perl5
    /usr/lib/perl/5.8
    /usr/share/perl/5.8
    /usr/local/lib/site_perl
    .
-- 
ilmari




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