From @jaalto

DESCRIPTION

Running a Perl program "whohas"​:

  http​://packages.debian.org/unstable/whohas

under http​://www.cygwin.com Perl 5.10.1 (official port), the
final rounds before core dump are​:

  PERLDB_OPTS="NonStop=1 \
  AutoTrace=1 \
  frame=2" \
  perl -dS ./whohas

  ...
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  197​: (*{"${callpkg}​::$sym"} = \&{"${pkg}​::$sym"}, next)
  198​: unless $sym =~ s/^(\W)//;
  exited Exporter​::export
  exited IO​::Socket​::import
  exited CODE(0x16d1ae38)
  Segmentation fault (core dumped)

The call generated a "perl.exe.stackdump" whose contents read​:

  $ cat perl.exe.stackdump
  Exception​: STATUS_ACCESS_VIOLATION at eip=610E4DF6
  eax=10010000 ebx=10040000 ecx=10010000 edx=00000000 esi=17230FC8 edi=00000028
  ebp=17335000 esp=047FB2A4 program=C​:\cygwin-1.7\root\bin\perl.exe, pid 4796, thread unknown (0x13DC)
  cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
  Stack trace​:
  Frame Function Args
  17335000 610E4DF6 (00000000, 00000000, 00000000, 00000000)
  End of stack trace

Please let me know how can I help more.

ENVIRONMENT

perl --version

This is perl, v5.10.1 (*) built for i686-cygwin-thread-multi-64int
(with 12 registered patches, see perl -V for more detail)

CONTENT OF REPORT​: perlbug -d

Flags​:
  category=
  severity=

Site configuration information for perl 5.10.1​:

Configured by rurban at Wed Nov 25 17​:53​:54 GMT 2009.

Summary of my perl5 (revision 5 version 10 subversion 1) configuration​:

  Platform​:
  osname=cygwin, osvers=1.7.0(0.21853), archname=i686-cygwin-thread-multi-64int
  uname='cygwin_nt-5.1 reini 1.7.0(0.21853) 2009-11-19 10​:07 i686 cygwin '
  config_args='-de -Dlibperl=cygperl5_10.dll -Dmksymlinks -Dusethreads -Dmad=y'
  hint=recommended, useposix=true, d_sigaction=define
  useithreads=define, usemultiplicity=define
  useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
  use64bitint=define, use64bitall=undef, uselongdouble=undef
  usemymalloc=y, bincompat5005=undef
  Compiler​:
  cc='gcc', ccflags ='-DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__ -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include',
  optimize='-O3',
  cppflags='-DPERL_USE_SAFE_PUTENV -U__STRICT_ANSI__ -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
  ccversion='', gccversion='4.3.4 20090804 (release) 1', gccosandvers=''
  intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=12345678
  d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
  ivtype='long long', ivsize=8, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
  alignbytes=8, prototype=define
  Linker and Libraries​:
  ld='g++', ldflags =' -Wl,--enable-auto-import -Wl,--export-all-symbols -Wl,--stack,8388608 -Wl,--enable-auto-image-base -fstack-protector -L/usr/local/lib'
  libpth=/usr/local/lib /usr/lib /lib
  libs=-lgdbm -ldb -ldl -lcrypt -lgdbm_compat
  perllibs=-ldl -lcrypt
  libc=/usr/lib/libc.a, so=dll, useshrplib=true, libperl=cygperl5_10.dll
  gnulibc_version=''
  Dynamic Linking​:
  dlsrc=dl_dlopen.xs, dlext=dll, d_dlsymun=undef, ccdlflags=' '
  cccdlflags=' ', lddlflags=' --shared -Wl,--enable-auto-import -Wl,--export-all-symbols -Wl,--stack,8388608 -Wl,--enable-auto-image-base -L/usr/local/lib -fstack-protector'

Locally applied patches​:
  CYG11 no-bs
  CYG12 no archlib in otherlibdirs
  CYG14 Dynaloader
  CYG15 static-Win32CORE
  CYG17 utf8-paths
  CYG21 LibList-Kid.patch
  CYG22 cygwin-1.7 hints
  CYG23 544-stat
  CYG24 build man pages
  CYG25 use same image-base when exchanging privlib dlls
  Bug#55162 File​::Spec​::case_tolerant performance
  disable ExtUtils​::MakeMaker​::Coverage in Sys-Syslog

@​INC for perl 5.10.1​:
  /usr/lib/perl5/5.10/i686-cygwin
  /usr/lib/perl5/5.10
  /usr/lib/perl5/site_perl/5.10/i686-cygwin
  /usr/lib/perl5/site_perl/5.10
  /usr/lib/perl5/vendor_perl/5.10/i686-cygwin
  /usr/lib/perl5/vendor_perl/5.10
  /usr/lib/perl5/vendor_perl/5.10
  /usr/lib/perl5/site_perl/5.8
  /usr/lib/perl5/vendor_perl/5.8
  .

Environment for perl 5.10.1​:
  CYGWIN_ROOT=C​:\cygwin-1.7\root
  CYGWIN_ROOT2=C​:\cygwin\root
  HOME=/home/jaalto
  LANG=en_US.UTF-8
  LANGUAGE (unset)
  LC_NUMERIC=C
  LD_LIBRARY_PATH=/lib​:/usr/local/lib​:/usr/lib
  LOGDIR (unset)
  PATH=/home/jaalto/var/link/bin​:/usr/local/bin​:/usr/bin​:/cygdrive/c/cygwin-1.7/lib​:/cygdrive/c/WINDOWS/system32​:/cygdrive/c/WINDOWS​:/cygdrive/c/WINDOWS/System32/Wbem​:/cygdrive/c/Program Files/putty​:/cygdrive/c/Program Files/ATI Technologies/ATI.ACE/Core-Static​:/cygdrive/c/Program Files/Common Files/Roxio Shared/DLLShared/​:/cygdrive/c/Program Files/Common Files/Roxio Shared/DLLShared/​:/cygdrive/c/Program Files/Common Files/Roxio Shared/9.0/DLLShared/​:/cygdrive/c/Program Files/Hewlett-Packard/IAM/bin​:/cygdrive/c/program files/putty​:/cygdrive/c/Program Files/QuickTime/QTSystem​:/cygdrive/c/Program Files/OOo-dev 3/program​:/cygdrive/c/Program Files/TortoiseGit/bin​:/cygdrive/c/Program Files/Bazaar
  PERL_BADLANG (unset)
  SHELL=/bin/sh

From @rurban

Reproducable. There's some endless loop eating all the memory.
The fail is in malloc() from a harmless newGP.

I'll have to bring up my debian libs to 5.10 to cross-check it.
--
Reini Urban

From @rurban

Not repro at my debian 5.10.1 and 5.8.8,
Repro under cygwin with all my perl packages since 5.10​:
5.10.0, 5.10.1, 5.11.2. cygwin 5.8.9 works okay.
--
Reini Urban

The RT System itself - Status changed from 'new' to 'open'