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[perl #74764] -E 'given( goto f ) { f: }' => crash

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From:
Frank Wiegand
Date:
April 29, 2010 06:03
Subject:
[perl #74764] -E 'given( goto f ) { f: }' => crash
Message ID:
rt-3.6.HEAD-27388-1272530215-1402.74764-75-0@perl.org
# New Ticket Created by  Frank Wiegand 
# Please include the string:  [perl #74764]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=74764 >


This is a bug report for perl from frank.wiegand@gmail.com,
generated with the help of perlbug 1.39 running under perl 5.12.0.


-----------------------------------------------------------------

The following code crashes perl:

        % perl5.12.0 -E 'given ( goto f ) { f: }'
        Use of "goto" to jump into a construct is deprecated at -e line 1.
        perl5.12.0: pp_ctl.c:4005: Perl_pp_leavegiven: Assertion `((cx)->cx_u.cx_subst.sbu_type & 0xf) == 3' failed.
        zsh: abort      /opt/perl/perl-5.12.0-RC3/bin/perl5.12.0 -E 'given ( goto f ) { f: }

Yes, I see the deprecated warning.
Yes, no one would do this.

But perl should not crash, too.


Thanks, Frank

-----------------------------------------------------------------
---
Flags:
    category=core
    severity=low
---
Site configuration information for perl 5.12.0:

Configured by fw at Sat Apr  3 09:18:00 CEST 2010.

Summary of my perl5 (revision 5 version 12 subversion 0) configuration:
   
  Platform:
    osname=linux, osvers=2.6.32-trunk-amd64, archname=x86_64-linux
    uname='linux hal2 2.6.32-trunk-amd64 #1 smp sun jan 10 22:40:40 utc 2010 x86_64 gnulinux '
    config_args='-de -Dusedevel -DDEBUGGING=both -Doptimize=-g -Dcc=ccache gcc -Dld=gcc -Dprefix=/opt/perl/perl-5.12.0-RC3/ -Dmad'
    hint=recommended, useposix=true, d_sigaction=define
    useithreads=undef, usemultiplicity=undef
    useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
    use64bitint=define, use64bitall=define, uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='ccache gcc', ccflags ='-DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-g',
    cppflags='-DDEBUGGING -fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.4.3 20100108 (prerelease)', 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='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=8, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -fstack-protector -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib /lib64 /usr/lib64
    libs=-lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lc
    libc=/lib/libc-2.10.2.so, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.10.2'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -g -L/usr/local/lib -fstack-protector'

Locally applied patches:
    RC3

---
@INC for perl 5.12.0:
    /opt/perl/perl-5.12.0-RC3/lib/site_perl/5.12.0/x86_64-linux
    /opt/perl/perl-5.12.0-RC3/lib/site_perl/5.12.0
    /opt/perl/perl-5.12.0-RC3/lib/5.12.0/x86_64-linux
    /opt/perl/perl-5.12.0-RC3/lib/5.12.0
    .

---
Environment for perl 5.12.0:
    HOME=/home/fw
    LANG=de_DE.UTF-8
    LANGUAGE=
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/sbin:/usr/sbin:/home/fw/bin:/home/fw/bin:/usr/local/bin:/usr/bin:/bin:/usr/games
    PERL_AUTOINSTALL=--defaultdeps
    PERL_BADLANG (unset)
    PERL_EXTUTILS_AUTOINSTALL=--defaultdeps
    PERL_MM_USE_DEFAULT=1
    SHELL=/bin/zsh



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