QLocale::system().name() always returns "C"

Below is the example program and it's results:

{vl}[vl@qtbug]$ ls
qt_app.cpp
{vl}[vl@qtbug]$ cat qt_app.cpp 
#include <QDebug>

#include <stdio.h>
#include <time.h>
#include <locale.h>


int main ()
{
  time_t rawtime;
  struct tm * timeinfo;
  char buffer [80];

  struct lconv * lc;

  time ( &rawtime );
  timeinfo = localtime ( &rawtime );

  int twice=0;

  do {
	printf("------\n");	

    printf ("C Locale is: %s\n", setlocale(LC_ALL,NULL) );

    strftime (buffer,80,"%c",timeinfo);
    printf ("Date is: %s\n",buffer);

    lc = localeconv ();
    printf ("Currency symbol is: %s\n-\n",lc->currency_symbol);

	QLocale locale;
	qDebug() << "QLocale name:" << locale.name();
	qDebug() << "QLocale name(static):" << QLocale::system().name();

    setlocale (LC_ALL,"");
  } while (!twice++);
  
  return 0;
}

Unknown macro: {vl}

[vl@qtbug]$ uname -a
Linux vl 2.6.31-gentoo-r6 #3 SMP PREEMPT Fri Jan 1 22:13:49 MSK 2010 x86_64 Intel(R) Core(TM)2 Duo CPU E8500 @ 3.16GHz GenuineIntel GNU/Linux

[vl@qtbug]$ echo $LANG
ru_RU.UTF-8

Unknown macro: {vl}

[vl@qtbug]$ g++ -pipe -O2 -pipe -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/home/vl/opt/qtsdk-2010.02/qt/mkspecs/linux-g++ -I. -I/home/vl/opt/qtsdk-2010.02/qt/include/QtCore/ -I/home/vl/opt/qtsdk-2010.02/qt/include qt_app.cpp -L/home/vl/opt/qtsdk-2010.02/qt/lib -lQtCore -lgthread-2.0 -lrt -lglib-2.0 -lpthread -o qt_app

[vl@qtbug]$ ldd ./qt_app
linux-vdso.so.1 => (0x00007fff177c9000)
libQtCore.so.4 => /home/vl/opt/qtsdk-2010.02/qt/lib/libQtCore.so.4 (0x00007fcb2f4bc000)
libgthread-2.0.so.0 => /usr/lib/libgthread-2.0.so.0 (0x00007fcb2f2b7000)
librt.so.1 => /lib/librt.so.1 (0x00007fcb2f0ae000)
libglib-2.0.so.0 => /usr/lib/libglib-2.0.so.0 (0x00007fcb2edd3000)
libpthread.so.0 => /lib/libpthread.so.0 (0x00007fcb2ebb7000)
libstdc+.so.6 => /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.4/libstdc+.so.6 (0x00007fcb2e8ac000)
libm.so.6 => /lib/libm.so.6 (0x00007fcb2e629000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x00007fcb2e413000)
libc.so.6 => /lib/libc.so.6 (0x00007fcb2e0ba000)
libdl.so.2 => /lib/libdl.so.2 (0x00007fcb2deb6000)
/lib64/ld-linux-x86-64.so.2 (0x00007fcb2f96d000)

Unknown macro: {vl}

[vl@qtbug]$ ./qt_app
------
C Locale is: C
Date is: Sun Mar 28 23:04:25 2010
Currency symbol is:
-
QLocale name: "C"
QLocale name(static): "C"
------
C Locale is: LC_CTYPE=ru_RU.UTF-8;LC_NUMERIC=C;LC_TIME=ru_RU.UTF-8;LC_COLLATE=ru_RU.UTF-8;LC_MONETARY=ru_RU.UTF-8;LC_MESSAGES=ru_RU.UTF-8;LC_PAPER=ru_RU.UTF-8;LC_NAME=ru_RU.UTF-8;LC_ADDRESS=ru_RU.UTF-8;LC_TELEPHONE=ru_RU.UTF-8;LC_MEASUREMENT=ru_RU.UTF-8;LC_IDENTIFICATION=ru_RU.UTF-8
Date is: Вск 28 Мар 2010 23:04:25
Currency symbol is: руб
-
QLocale name: "C"
QLocale name(static): "C"