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.

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

'/' must follow a numeric type in unpack, inconsistent message #12895

Open
p5pRT opened this issue Apr 3, 2013 · 1 comment
Open

'/' must follow a numeric type in unpack, inconsistent message #12895

p5pRT opened this issue Apr 3, 2013 · 1 comment
Labels
distro-Linux type-core

Comments

@p5pRT
Copy link

p5pRT commented Apr 3, 2013

Migrated from rt.perl.org#117457 (status was 'new')

Searchable as RT117457$
@p5pRT
Copy link
Author

p5pRT commented Apr 3, 2013

From perlbug@plan9.de

Created by perlbug@plan9.de

It seems pack and unpack work very inconsistently with '/'​:

  join "​:", unpack "(w/a)*", pack "(w/a)*", 12, 13
  => 12​:13
  join "​:", unpack "(w/a)*", pack "(w/a)*"
  => (empty string)

In this case, everything works as advertised - the () group gobbles up all
remaining values when unpacking, even when there are none.

This changes when something precedes it​:

  join "​:", unpack "C (w/a)*", pack "C (w/a)*", 1, 2, 3
  => 1​:2​:3
  join "​:", unpack "C (w/a)*", pack "C (w/a)*", 1
  => '/' must follow a numeric type in unpack at -e line 1.

Expected for the last case would be just the value "1".

In addition to having different behaviour when something precedes to
(w/a)* unpack expression or not, the error message is quite confusing, as
clearly, '/' follows a numeric type in this case.

I checked perl 5.8.9, 5.14.2, and 5.16.3, and all are consistently
inconsistent in the same way.

Perl Info 

Flags:
    category=core
    severity=low

Site configuration information for perl 5.16.3:

Configured by Marc Lehmann at Wed Mar 13 11:30:24 CET 2013.

Summary of my perl5 (revision 5 version 16 subversion 3) configuration:
   
  Platform:
    osname=linux, osvers=3.2.0-4-amd64, archname=x86_64-linux
    uname='linux cerebro 3.2.0-4-amd64 #1 smp debian 3.2.35-2 x86_64 gnulinux '
    config_args='-Duselargefiles -Duse64bitint -Dusemymalloc=n -Dstatic_ext=Fcntl -Dcc=gcc -Dccflags=-DPERL_DISABLE_PMC -DPERL_ARENA_SIZE=16376 -USITEARCH_EXP -USITELIB_EXP -UARCHLIB_EXP -D_GNU_SOURCE  -I/opt/include -ggdb -gdwarf-2 -g3 -Doptimize=-O6 -fno-asynchronous-unwind-tables -fno-strict-aliasing -Dcccdlflags=-fPIC -Dldflags=-L/opt/perl/lib -L/opt/lib -Dlibs=-ldl -lm -lcrypt -Dprefix=/opt/perl -Dprivlib=/opt/perl/lib/perl5 -Darchlib=/opt/perl/lib/perl5 -Uusevendorprefix -Dsiteprefix=/opt/perl -Dsitelib=/opt/perl/lib/perl5 -Dsitearch=/opt/perl/lib/perl5 -Dsitebin=/opt/perl/bin -Dman1dir=/opt/perl/man/man1 -Dman3dir=/opt/perl/man/man3 -Dsiteman1dir=/opt/perl/man/man1 -Dsiteman3dir=/opt/perl/man/man3 -Dman1ext=1 -Dman3ext=3 -Dpager=/usr/bin/less -Uafs -Uusesfio -Uusenm -Uuseshrplib -Ud_dosuid -Dusethreads=undef -Duse5005threads=undef -Duseithreads=undef -Dusemultiplicity=undef -Demail=perl-binary@plan9.de -Dcf_email=perl-binary@plan9.de -Dcf_by=Marc Lehmann -Dlocincpth=/opt/perl/include /opt/include -Dmyhostname=localhost -Dmultiarch=undef -Dbin=/opt/perl/bin -Dxxxusedevel -DxxxDEBUGGING -Dxxxuse_debugging_perl -Dxxxuse_debugmalloc -dEs'
    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='gcc', ccflags ='-DPERL_DISABLE_PMC -DPERL_ARENA_SIZE=16376 -USITEARCH_EXP -USITELIB_EXP -UARCHLIB_EXP -D_GNU_SOURCE -I/opt/include -ggdb -gdwarf-2 -g3 -fno-strict-aliasing -pipe -I/opt/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O6 -fno-asynchronous-unwind-tables -fno-strict-aliasing',
    cppflags='-DPERL_DISABLE_PMC -DPERL_ARENA_SIZE=16376 -USITEARCH_EXP -USITELIB_EXP -UARCHLIB_EXP -D_GNU_SOURCE -I/opt/include -ggdb -gdwarf-2 -g3 -fno-strict-aliasing -pipe -I/opt/include'
    ccversion='', gccversion='4.7.2', 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 ='-L/opt/perl/lib -L/opt/lib -L/usr/local/lib'
    libpth=/usr/local/lib /lib/x86_64-linux-gnu /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
    libs=-ldl -lm -lcrypt
    perllibs=-ldl -lm -lcrypt
    libc=, so=so, useshrplib=false, libperl=libperl.a
    gnulibc_version='2.13'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
    cccdlflags='-fPIC', lddlflags='-shared -O6 -fno-asynchronous-unwind-tables -fno-strict-aliasing -L/opt/perl/lib -L/opt/lib -L/usr/local/lib'

Locally applied patches:
    


@INC for perl 5.16.3:
    /root/src/sex
    /root/pserv/lib/perl5
    /opt/perl/lib/perl5
    /opt/perl/lib/perl5
    .


Environment for perl 5.16.3:
    HOME=/root
    LANG (unset)
    LANGUAGE (unset)
    LC_CTYPE=en_US.UTF-8
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/root/s2:/root/s:/opt/bin:/opt/sbin:/bin:/sbin:/usr/bin:/usr/sbin:/usr/X11/bin:/usr/games:/usr/local/bin:/usr/local/sbin:/root/pserv:.
    PERL5LIB=/root/src/sex:/root/pserv/lib/perl5
    PERL5_CPANPLUS_CONFIG=/root/.cpanplus/config
    PERLDB_OPTS=ornaments=0
    PERL_ANYEVENT_DBI_TESTS=1
    PERL_ANYEVENT_LOOP_TESTS=1
    PERL_ANYEVENT_NET_TESTS=1
    PERL_BADLANG (unset)
    PERL_UNICODE=E
    SHELL=/bin/bash

@xenu xenu removed the affects-5.16 label Nov 19, 2021
@xenu xenu removed the Severity Low label Dec 29, 2021
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
distro-Linux type-core
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@xenu @p5pRT