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[perl #116981] 'our sub' segfaults perl if the sub did not compile

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From:
Peter Martini
Date:
February 28, 2013 05:47
Subject:
[perl #116981] 'our sub' segfaults perl if the sub did not compile
Message ID:
rt-3.6.HEAD-31961-1362030456-1070.116981-75-0@perl.org
# New Ticket Created by  Peter Martini 
# Please include the string:  [perl #116981]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=116981 >


perl5.17.9 -c -Mfeature=lexical_subs -e 'our sub foo{my 42} foo'

(Or blead)

Crashes on a null pointer in:

Program received signal SIGSEGV, Segmentation fault.
0x080be411 in Perl_yylex (my_perl=0x82f5008) at toke.c:7087
7087                        cv = lex ? GvCV(gv) : rv2cv_op_cv(rv2cv_op, 0);

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=core
    severity=medium
---
Summary of my perl5 (revision 5 version 17 subversion 9) configuration:
  Derived from: 250ef6a986d921a479be2c33b788d2aaf68438dd
  Platform:
    osname=linux, osvers=3.2.0-37-generic, archname=i686-linux-thread-multi
    uname='linux pmlinlaptop 3.2.0-37-generic #58-ubuntu smp thu jan
24 15:28:57 utc 2013 i686 i686 i386 gnulinux '
    config_args='-Dusedevel -DDEBUGGING -Dusethreads -des'
    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 -DDEBUGGING
-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 -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector -I/usr/local/include'
    ccversion='', gccversion='4.6.3', 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/i386-linux-gnu /lib/../lib
/usr/lib/i386-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    perllibs=-lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.15'
  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: DEBUGGING HAS_TIMES MULTIPLICITY PERLIO_LAYERS
                        PERL_DONT_CREATE_GVSV PERL_IMPLICIT_CONTEXT
                        PERL_MALLOC_WRAP PERL_NEW_COPY_ON_WRITE
                        PERL_PRESERVE_IVUV PERL_TRACK_MEMPOOL PERL_USE_DEVEL
                        USE_ITHREADS USE_LARGE_FILES USE_LOCALE
                        USE_LOCALE_COLLATE USE_LOCALE_CTYPE
                        USE_LOCALE_NUMERIC USE_PERLIO USE_PERL_ATOF
                        USE_REENTRANT_API
  Locally applied patches:
        uncommitted-changes
  Built under linux
  Compiled at Feb 19 2013 01:30:54
  @INC:
    /usr/local/lib/perl5/site_perl/5.17.9/i686-linux-thread-multi
    /usr/local/lib/perl5/site_perl/5.17.9
    /usr/local/lib/perl5/5.17.9/i686-linux-thread-multi
    /usr/local/lib/perl5/5.17.9
    /usr/local/lib/perl5/site_perl
    .


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