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[perl #119435] Re: strftime outputs wrong with format '%p' under certain locales
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From:
Hector Rodriguez
Date:
August 22, 2013 22:56
Subject:
[perl #119435] Re: strftime outputs wrong with format '%p' under certain locales
Message ID:
rt-3.6.HEAD-1873-1377211691-97.119435-75-0@perl.org
# New Ticket Created by Hector Rodriguez
# Please include the string: [perl #119435]
# in the subject line of all future correspondence about this issue.
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=119435 >
wena, colaborando al camello
]-[.
2013/8/22 Felipe Sologuren <fsologuren@newtenberg.com>
> This is a bug report for perl from fsologuren@newtenberg.com,
> generated with the help of perlbug 1.39 running under perl 5.14.2.
>
>
> -----------------------------------------------------------------
> strftime function returns a wrong output when I used locale 'es_CL' for
> LC_TIME variable and the format string '%p'.
> In contrast with command `date`, that returns an empty string with that
> locale environment variable, strftime returns '%p' itself:
> --------------------------------8<---------------------------------
> $ perl -MPOSIX -e "POSIX::setlocale( LC_TIME, 'es_CL' ); my @t =
> CORE::localtime();print \"'\".POSIX::strftime(\"%p\",@t).\"'\n\";"
> '%p'
> --------------------------------8<---------------------------------
>
> But if the format contains an aditional character that implies non-empty
> string output, the response is correct:
> --------------------------------8<---------------------------------
> $ perl -MPOSIX -e "POSIX::setlocale( LC_TIME, 'es_CL' ); my @t =
> CORE::localtime();print \"'\".POSIX::strftime(\" %p\",@t).\"'\n\";"
> ' '
> --------------------------------8<---------------------------------
>
> Alternatively, with the C locale, the behaviour is as espected, probably
> because the output is non-empty:
> --------------------------------8<---------------------------------
> $ perl -MPOSIX -e "POSIX::setlocale( LC_TIME, 'C' ); my @t =
> CORE::localtime();print \"'\".POSIX::strftime(\" %p\",@t).\"'\n\";"
> ' '
> --------------------------------8<---------------------------------
>
> I tested strftime with the C code provided by `man 3 strftime` and the
> output of the input format '%p' is '', as espected, So I believe that the
> problem is pure perl.
>
> I tested with perl 5.10.1 from debian stable and the problem is the same.
> I tested with perl 5.19.3 (perlbrew over debian) and the problem persist.
> I tested with perl 5.6.2 (perlbrew over debian) and the behaviour was
> correct; strftime returns empty string with LC_TIME=es_CL.
>
> I couldn't figured out where is the root of the problem because the fact
> that the output string equals the format string is strange, but I suspect
> about the wrapper Perl_my_strftime because it didn't manage well this case
> where the returned value of C strftime is zero length, but the format
> string is non-empty. On the other hand, the actual asignment to ST(0)
> changed in commit b3c85772f7a16b79e679c78c9638a7afa4856432 when the wrapper
> was moved from POSIX.xs to util.c and I didn't understand low level perl
> code very well.
>
> Thank you for your great work.
> Perl rules.
>
> -----------------------------------------------------------------
> ---
> Flags:
> category=library
> severity=low
> module=POSIX
> ---
> Site configuration information for perl 5.14.2:
>
> Configured by Debian Project at Wed Apr 10 16:58:16 UTC 2013.
>
> Summary of my perl5 (revision 5 version 14 subversion 2) configuration:
>
> Platform:
> osname=linux, osvers=3.2.0-4-amd64,
> archname=x86_64-linux-gnu-thread-multi
> uname='linux madeleine 3.2.0-4-amd64 #1 smp debian 3.2.39-2 x86_64
> gnulinux '
> config_args='-Dusethreads -Duselargefiles -Dccflags=-DDEBIAN
> -D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4
> -Wformat -Werror=format-security -Dldflags= -Wl,-z,relro
> -Dlddlflags=-shared -Wl,-z,relro -Dcccdlflags=-fPIC
> -Darchname=x86_64-linux-gnu -Dprefix=/usr -Dprivlib=/usr/share/perl/5.14
> -Darchlib=/usr/lib/perl/5.14 -Dvendorprefix=/usr
> -Dvendorlib=/usr/share/perl5 -Dvendorarch=/usr/lib/perl5
> -Dsiteprefix=/usr/local -Dsitelib=/usr/local/share/perl/5.14.2
> -Dsitearch=/usr/local/lib/perl/5.14.2 -Dman1dir=/usr/share/man/man1
> -Dman3dir=/usr/share/man/man3 -Dsiteman1dir=/usr/local/man/man1
> -Dsiteman3dir=/usr/local/man/man3 -Duse64bitint -Dman1ext=1 -Dman3ext=3perl
> -Dpager=/usr/bin/sensible-pager -Uafs -Ud_csh -Ud_ualarm -Uusesfio -Uusenm
> -Ui_libutil -DDEBUGGING=-g -Doptimize=-O2 -Duseshrplib
> -Dlibperl=libperl.so.5.14.2 -des'
> hint=recommended, useposix=true, d_sigaction=define
> useithreads=define, usemultiplicity=define
> useperlio=define, d_sfio=undef, uselargefiles=define, usesocks=undef
> use64bitint=define, use64bitall=define, uselongdouble=undef
> usemymalloc=n, bincompat5005=undef
> Compiler:
> cc='cc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN
> -fstack-protector -fno-strict-aliasing -pipe -I/usr/local/include
> -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
> optimize='-O2 -g',
> cppflags='-D_REENTRANT -D_GNU_SOURCE -DDEBIAN -fstack-protector
> -fno-strict-aliasing -pipe -I/usr/local/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='cc', ldflags =' -fstack-protector -L/usr/local/lib'
> libpth=/usr/local/lib /lib/x86_64-linux-gnu /lib/../lib
> /usr/lib/x86_64-linux-gnu /usr/lib/../lib /lib /usr/lib
> libs=-lgdbm -lgdbm_compat -ldb -ldl -lm -lpthread -lc -lcrypt
> perllibs=-ldl -lm -lpthread -lc -lcrypt
> libc=, so=so, useshrplib=true, libperl=libperl.so.5.14.2
> gnulibc_version='2.13'
> Dynamic Linking:
> dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E'
> cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib
> -fstack-protector'
>
> Locally applied patches:
>
>
> ---
> @INC for perl 5.14.2:
> /etc/perl
> /usr/local/lib/perl/5.14.2
> /usr/local/share/perl/5.14.2
> /usr/lib/perl5
> /usr/share/perl5
> /usr/lib/perl/5.14
> /usr/share/perl/5.14
> /usr/local/lib/site_perl
> .
>
> ---
> Environment for perl 5.14.2:
> HOME=/home/felipe
> LANG=es_CL.UTF-8
> LANGUAGE=es_CL.UTF-8
> LC_ALL=es_CL.UTF-8
> LC_CTYPE=es_CL.UTF-8
> LC_MESSAGES=es_CL.UTF-8
> LD_LIBRARY_PATH (unset)
> LOGDIR (unset)
>
> PATH=/usr/lib/x86_64-linux-gnu/qt4/bin:/home/felipe/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games:/usr/local/sbin:/usr/sbin:/sbin:~/xpn/xmark/bin:/usr/local/sbin:/usr/sbin:/sbin:~/xpn/xmark/bin
> PERL_BADLANG (unset)
> SHELL=/bin/bash
>
>
--
___________________________
]-[éctor Rodríguez S.
Ingeniería y desarrollo de software
Newtenberg
2698 2515
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