Date: Sun, 27 Apr 2008 11:45:17 +0200 From: Marian Asokarajan <sashi@gmx.de> To: freebsd-questions@freebsd.org Subject: libstdc++ localization aborts with an exception Message-ID: <48144B2D.7000300@gmx.de>
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Hello,
if I try to instantiate the standard C++ class std::locale for locales
other than "C", it aborts with an exception in FreeBSD 7-R.
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]
these MODELs are located in the base system source directory
/usr/src/contrib/libstdc++/config/locale/
And probably the "darwin" (or "generic") model is used, instead of "gnu"
(s.a. line 5801 in file /usr/src/contrib/libstdc++/configure).
If it is so, why doesn't the "gnu" model apply to FreeBSD ?
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.
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
Here's a C++ code you may want to try (compile with CC <filename.cc>).
It works well with "setenv LANG C", but fails if LANG=de_DE.UTF-8 (or any other) !
//---------------------------------------------------
#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 (set $LANG to de_DE.UTF-8 and 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)
-------------------------------------------------------------------
Thanks in advance for any ideas.
Marian
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