[perl #94510] bless() invoked in AUTOLOAD causes SEGV

# New Ticket Created by  stsc@refcnt.org 
# Please include the string:  [perl #94510]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=94510 >



This is a bug report for perl from stsc@refcnt.org,
generated with the help of perlbug 1.39 running under perl 5.15.0.


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

[guest@testing ~]$ ./perl-7b70e81 -e 'AUTOLOAD { bless {} }; __PACKAGE__->method'
Segmentation fault

Reproducible with 5.004_05, 5.005_04, 5.6.2, 5.8.9, 5.10.0, 5.10.1,
5.12.2, 5.12.3, 5.14.0 and blead.

Attached the output of valgrind and gdb.

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=high
---
Site configuration information for perl 5.15.0:

Configured by guest at Mon Jul 11 09:36:23 CEST 2011.

Summary of my perl5 (revision 5 version 15 subversion 0) configuration:
  Snapshot of: 7b70e8177801df4e142684870ce037d584f72e7b
  Platform:
    osname=linux, osvers=2.6.32-5-openvz-686, archname=i686-linux-thread-multi
    uname='linux testing 2.6.32-5-openvz-686 #1 smp tue mar 8 23:30:33 utc 2011 i686 gnulinux '
    config_args='-des -Dusedevel -Dusethreads -Doptimize=-g3 -Dprefix=/home/guest/perl/perl-7b70e81'
    hint=recommended, useposix=true, d_sigaction=define
    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 -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-g3',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.4.5', 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 =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib/../lib /usr/lib/../lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=/lib/libc-2.11.2.so, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.11.2'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -g3 -L/usr/local/lib -fstack-protector'

Locally applied patches:
    

---
@INC for perl 5.15.0:
    /home/guest/perl/perl-7b70e81/lib/site_perl/5.15.0/i686-linux-thread-multi
    /home/guest/perl/perl-7b70e81/lib/site_perl/5.15.0
    /home/guest/perl/perl-7b70e81/lib/5.15.0/i686-linux-thread-multi
    /home/guest/perl/perl-7b70e81/lib/5.15.0
    .

---
Environment for perl 5.15.0:
    HOME=/home/guest
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/usr/local/bin:/usr/bin:/bin:/usr/games
    PERL_BADLANG (unset)
    SHELL=/bin/bash

• [perl #94510] bless() invoked in AUTOLOAD causes SEGV by stsc @ refcnt . org
• Re: [perl #94510] bless() invoked in AUTOLOAD causes SEGV by Rafael Garcia-Suarez
• Re: [perl #94510] bless() invoked in AUTOLOAD causes SEGV by Salvador Ortiz Garcia