From sashi at gmx.de  Sun Apr 20 12:05:23 2008
From: sashi at gmx.de (sashi)
Date: Sun Apr 20 12:05:30 2008
Subject: Localization (L10n) with libstdc++ aborts with an exception
Message-ID: <480B2BEE.4010701@gmx.de>

Hello,

while trying to instantiate std::locale on my FreeBSD 7.0-R system
with LANG=de_DE.UTF-8, the compiled code aborts with an exception.
Only LANG=C works.

Here's the code you may want to try (compile with CC <filename.cc>):
#include <locale>
#include <iostream>
#include <clocale>

int main()
{
  using std::cout;
  using std::endl;

  // C L10n
  const char* const lstr = std::setlocale(LC_ALL, "");
  cout << "C setlocale()\nresult=";
  cout << ( lstr ? lstr : "0" ) << "\n" << endl;

  // C++ L10n
  cout << "C++ std::locale" << endl;
  std::locale loc("");
  cout << "std::locale loc=" << loc.name() << endl;
}


Output (run with ./a.out):
C setlocale()
result=de_DE.UTF-8

C++ std::locale
terminate called after throwing an instance of 'std::runtime_error'
   what():  locale::facet::_S_create_c_locale name not valid
Abort (core dumped)


My $LANG is set to de_DE.UTF-8 (via login.conf).
locale -a|grep de_DE reports:
de_DE.ISO8859-1
de_DE.ISO8859-15
de_DE.UTF-8

What I've found out so far:
I suppose it has something to do with how libstdc++ is build under fBSD.
There is an option for libstdc++ called
--enable-clocale[=MODEL]  use MODEL for target locale package [default=auto]

the MODELs are located in the base system source directory
/usr/src/contrib/libstdc++/config/locale/

And probably the "generic" (or "darwin") model is used, instead of "gnu" ?!

Can anyone please help me with this ?

gcc -v reports:
Using built-in specs.
Target: i386-undermydesk-freebsd
Configured with: FreeBSD/i386 system compiler
Thread model: posix
gcc version 4.2.1 20070719  [FreeBSD]

on my FreeBSD 7.0-RELEASE system.

Thanks in advance for any ideas.


-- 
Sashi Asokarajan