Front page | perl.perl5.porters |
Postings from March 2016
[perl #127774] segfault in caller()
Thread Previous
|
Thread Next
From:
l . mai @ web . de
Date:
March 24, 2016 00:25
Subject:
[perl #127774] segfault in caller()
Message ID:
rt-4.0.18-16578-1458779111-829.127774-75-0@perl.org
# New Ticket Created by l.mai@web.de
# Please include the string: [perl #127774]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org/Ticket/Display.html?id=127774 >
This is a bug report for perl from l.mai@web.de,
generated with the help of perlbug 1.40 running under perl 5.22.1.
-----------------------------------------------------------------
[Please describe your issue here]
$ perl -e 'END { caller 1 } eval("sub { die }")->()'
Died at (eval 1) line 1.
Segmentation fault (core dumped)
A threaded/debugging 5.22.1 segfaults at pp_ctl.c:1797: assert(CopSTASH(cx->blk_oldcop));
because oldcop is NULL.
This seems to be fixed in blead (probably due to the context stack overhaul?).
If I used bisect.pl right, the crash was introduced with commit
515abc43ad7e359e9f2f1fedb73378c13fd16348 (Set PL_curcop to NULL in
op.c:S_cop_free) between 5.18 and 5.20. ("Introduced" is probably wrong; more
like "exposed".)
It seems to consistently crash 5.20 and 5.22.
...
Taking a closer look, it also crashes 5.16.3 (with threads) and 5.8.9.
5.10.1, 5.12.5, 5.14.4, 5.18.2, and 5.16.3 (debugging, no threads) seem to be OK.
[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
category=core
severity=low
---
Site configuration information for perl 5.22.1:
Configured by mauke at Tue Dec 29 15:36:05 CET 2015.
Summary of my perl5 (revision 5 version 22 subversion 1) configuration:
Platform:
osname=linux, osvers=4.2.5-1-arch, archname=i686-linux
uname='linux simplicio 4.2.5-1-arch #1 smp preempt tue oct 27 08:28:41 cet 2015 i686 gnulinux '
config_args=''
hint=recommended, useposix=true, d_sigaction=define
useithreads=undef, usemultiplicity=undef
use64bitint=undef, use64bitall=undef, uselongdouble=undef
usemymalloc=n, bincompat5005=undef
Compiler:
cc='cc', ccflags ='-fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
optimize='-O2',
cppflags='-fwrapv -fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'
ccversion='', gccversion='5.3.0', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234, doublekind=3
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12, longdblkind=3
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-strong -L/usr/local/lib'
libpth=/usr/local/lib /usr/lib/gcc/i686-pc-linux-gnu/5.3.0/include-fixed /usr/lib /lib
libs=-lpthread -lnsl -lnm -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc -lgdbm_compat
perllibs=-lpthread -lnsl -lnm -ldl -lm -lcrypt -lutil -lc
libc=libc-2.22.so, so=so, useshrplib=false, libperl=libperl.a
gnulibc_version='2.22'
Dynamic Linking:
dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
cccdlflags='-fPIC', lddlflags='-shared -O2 -L/usr/local/lib -fstack-protector-strong'
---
@INC for perl 5.22.1:
/home/mauke/usr/lib/perl5/site_perl/5.22.1/i686-linux
/home/mauke/usr/lib/perl5/site_perl/5.22.1
/home/mauke/usr/lib/perl5/5.22.1/i686-linux
/home/mauke/usr/lib/perl5/5.22.1
.
---
Environment for perl 5.22.1:
HOME=/home/mauke
LANG=en_US.UTF-8
LANGUAGE=en_US
LC_COLLATE=C
LC_MONETARY=de_DE.UTF-8
LC_TIME=de_DE.UTF-8
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/home/mauke/perl5/perlbrew/bin:/home/mauke/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl
PERLBREW_BASHRC_VERSION=0.73
PERLBREW_HOME=/home/mauke/.perlbrew
PERLBREW_ROOT=/home/mauke/perl5/perlbrew
PERL_BADLANG (unset)
PERL_UNICODE=SAL
SHELL=/bin/bash
Thread Previous
|
Thread Next