localeconv() failing after _configthreadlocale()

[Paavo Helde]

I get strange error in VS2008: it seems localeconv() is plain failing
after a _configthreadlocale() call. Am I missing something? Test code
follows:

#include <iostream>
#include <locale.h>
#include <sstream>

int main(){
_configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
const char* result = setlocale(LC_ALL, "German");
std::cout << "setlocale result: "
<< (result? result: "NULL") << "\n";

std::ostringstream ss;
ss << 0.5;
char decpoint1 = ss.str()[1];
std::cout << "stream output decimal point: "
<< decpoint1 << (decpoint1==','?" - OK": " - FAIL") << "\n";

char decpoint2 = *localeconv()->decimal_point;
std::cout << "localeconv decimal point: "
<< decpoint2 << (decpoint2==','?" - OK": " - FAIL") << "\n";
}

Output:
setlocale result: German_Germany.1252
stream output decimal point: , - OK
localeconv decimal point: . - FAIL

TIA
Paavo