Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

getpwent() problems on HPUX 11 #4154

Open
p5pRT opened this issue Jun 29, 2001 · 2 comments
Open

getpwent() problems on HPUX 11 #4154

p5pRT opened this issue Jun 29, 2001 · 2 comments
Labels
Closable? We might be able to close this ticket, but we need to check with the reporter distro-HPUX hasCoreDump type-core type-portability

Comments

@p5pRT
Copy link

p5pRT commented Jun 29, 2001

Migrated from rt.perl.org#7207 (status was 'open')

Searchable as RT7207$
@p5pRT
Copy link
Author

p5pRT commented Jun 29, 2001 •
edited by toddr

From rrauenza@cup.hp.com

perl 5.6.1 doesn't pass t/op/grent.t (2nd test) on my machine -- it
dumps core. grent.t doesn't dump core on all machines -- depending on
the number of entries in /etc/passwd.

A short script that reproduces the problem with any number of entries is

$,=":";
$\="\n";
setgrent();
do {
@entries=getgrent();
print @entries;
} until (@entries==0);
endgrent();

There is also a problem with ...

$,=":";
$\="\n";
setpwent();
do {
@entries=getpwent();
print @entries;
} until (@entries==0);
endpwent();

The .c "equivalent" doesn't fail -- but the perl script does a lot of other passwd function calls that the .c doesn't do -- this was my first step at trying to reproduce it in C:

#include <pwd.h>

int main() {
struct passwd *pw;
setpwent();
do {
pw = getpwent();
if(pw) {
printf("%s\n", pw->pw_name);
}
} while (pw);
pw = getpwent();
endpwent();
}

The perl scripts above also fail (core dump) with 5.6.0 and do so on
some other machines, too.

The stack trace for the core dump (of the getpwent script above) in
5.6.1 looks like:

#0 0x77e93a00 in () from /usr/lib/libc.2
#1 0x77f38e20 in __nss_src_state_destr () from /usr/lib/libc.2
#2 0x77f39038 in __nss_src_state_destr () from /usr/lib/libc.2
#3 0x77f39178 in nss_delete () from /usr/lib/libc.2
#4 0x77f3a6a0 in nss_endent () from /usr/lib/libc.2
#5 0x77f3994c in nss_getent () from /usr/lib/libc.2
#6 0x77f7b710 in __getpwent_r () from /usr/lib/libc.2
#7 0x77f7b868 in getpwent () from /usr/lib/libc.2
#8 0x10c198 in Perl_pp_gpwent () at /usr/local/src/perl/perl5.6.1/perl-5.6.1/pp_sys.c:4888
#9 0xb9e9c in Perl_runops_standard () at /usr/local/src/perl/perl5.6.1/perl-5.6.1/run.c:24
#10 0x27334 in S_run_body (oldscope=1) at /usr/local/src/perl/perl5.6.1/perl-5.6.1/perl.c:1471
#11 0x26e40 in perl_run (my_perl=0x40010004) at /usr/local/src/perl/perl5.6.1/perl-5.6.1/perl.c:1393
#12 0x224a8 in main (argc=2, argv=0x77fe0a3c, env=0x77fe0a48) at /usr/local/src/perl/perl5.6.1/perl-5.6.1/perlmain.c:52

So, the core dump is down in libc somewhere, somehow caused by an
interaction with perl. I haven't been able to figure out what causes
it, and Purify 5.2 is unhappy with one of the opcodes emitted by the
compiler I have installed.

Perl Info 
-----------------------------------------------------------------
---
Flags:
category=core
severity=medium
---
Site configuration information for perl v5.6.1:

Configured by rrauenza at Wed Jun 27 14:32:49 PDT 2001.

Summary of my perl5 (revision 5.0 version 6 subversion 1) configuration:
Platform:
osname=hpux, osvers=11.00, archname=PA-RISC2.0
uname='hp-ux hairball b.11.00 u 9000785 2010760784 unlimited-user license '
config_args=''
hint=previous, useposix=true, d_sigaction=define
usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
useperlio=undef d_sfio=undef uselargefiles=define usesocks=undef
use64bitint=undef use64bitall=undef uselongdouble=undef
Compiler:
cc='cc', ccflags ='-D_HPUX_SOURCE -I/usr/local/include -I/opt/GNU/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Ae',
optimize='-g -v',
cppflags='-D_HPUX_SOURCE -I/usr/local/include -I/opt/GNU/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -Ae'
ccversion='A.11.01.20', gccversion='', gccosandvers=''
intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=4321
d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=16
ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
alignbytes=8, usemymalloc=y, prototype=define
Linker and Libraries:
ld='ld', ldflags =' -L/usr/local/lib -L/opt/GNU/lib'
libpth=/usr/local/lib /opt/GNU/lib /lib /usr/lib /usr/ccs/lib
libs=-lnsl -lnm -lndbm -ldld -lm -lc -lndir -lcrypt -lsec
perllibs=-lnsl -lnm -ldld -lm -lc -lndir -lcrypt -lsec
libc=/lib/libc.sl, so=sl, useshrplib=false, libperl=libperl.a
Dynamic Linking:
dlsrc=dl_hpux.xs, dlext=sl, d_dlsymun=undef, ccdlflags='-Wl,-E -Wl,-B,deferred '
cccdlflags='+z', lddlflags='-b +vnocompatwarnings -L/usr/local/lib -L/opt/GNU/lib'

Locally applied patches:


---
@INC for perl v5.6.1:
/opt/perlman/lib
/opt/perl5.6.1/lib/5.6.1/PA-RISC2.0
/opt/perl5.6.1/lib/5.6.1
/opt/perl5.6.1/lib/site_perl/5.6.1/PA-RISC2.0
/opt/perl5.6.1/lib/site_perl/5.6.1
/opt/perl5.6.1/lib/site_perl
.

---
Environment for perl v5.6.1:
HOME=/home/rrauenza
LANG=C
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)
PATH=/usr/bin:/usr/sbin:/opt/socks/bin:/home/rrauenza/bin:/bin:/usr/dt/bin:/usr/bin/X11:/opt/ansic/bin:/usr/ccs/bin:/usr/contrib/bin:/opt/nettladm/bin:/usr/contrib/bin/X11:/usr/local/bin/X11:/opt/graphics/common/bin:/opt/upgrade/bin:/opt/langtools/bin:/opt/perf/bin:/opt/imake/bin:/opt/omni/bin:/opt/hppd/bin/find/:/opt/GNU/bin:/opt/wscoe/bin:/opt/aCC/bin:/opt/pd/bin:/opt/trn4/bin:/opt/ignite/bin:/opt/graphics/OpenGL/debugger/bin:/opt/resmon/bin:/opt/gnuplot/bin:/opt/screen/bin:/opt/hparray/bin:/opt/ispell/bin:/usr/local/bin:/opt/lsof/bin:/opt/perl5/bin:/opt/mutt/bin:/opt/bash/bin:/opt/lynx/bin:/opt/OV/bin/OpC:/opt/prm/bin:/opt/graphics/phigs/bin:/opt/w3m/bin:/opt/tusc:/opt/ssh2/bin:/opt/gnome/bin:/opt/netpbm/bin/X11:/sbin:/opt/perlman/bin
PERL5LIB=/opt/perlman/lib
PERL_BADLANG (unset)
SHELL=/usr/local/bin/bash
SHLIB_PATH (unset)

@toddr
Copy link
Member

toddr commented Jan 31, 2020

@Tux is this worth pursuing or should we close it?

@toddr toddr added the Closable? We might be able to close this ticket, but we need to check with the reporter label Jan 31, 2020
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
Closable? We might be able to close this ticket, but we need to check with the reporter distro-HPUX hasCoreDump type-core type-portability
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
3 participants
@toddr @xenu @p5pRT