std::locale broken in gcc

[dirk@…]

When compiling the following code:

#include <locale> #include <iostream> #include <exception> #include <clocale>

void try_c_locale(const char* locale_name) {

if( std::setlocale(LC_ALL, locale_name) == NULL )

printf("Failed to setlocale(LC_ALL, \"%s\")\n", locale_name);

else

printf("Succeeded in calling setlocale(LC_ALL, \"%s\")\n", locale_name);

}

void try_cpp_locale(const char* locale_name) {

try {

std::locale my_locale(locale_name);

} catch(std::exception& e) {

printf("Failed ctor for std::locale with \"%s\": %s\n", locale_name, e.what()); return;

}

printf("Succeeded ctor for std::locale with \"%s\"\n", locale_name);

}

int main(void) {

Some locales from "locale -a" on my OS X system, here is proof that these locales do exist on my system. Take my word for it that "locale -a" also shows these locales existing on my linux system as well. rutski@imac:~$ locale -a | tail -n 2 C POSIX rutski@imac:~$ locale -a | grep en_US en_US en_US.ISO8859-1 en_US.ISO8859-15 en_US.US-ASCII en_US.UTF-8 rutski@imac:~$ locale -a | grep pl_PL pl_PL pl_PL.ISO8859-2 pl_PL.UTF-8 rutski@imac:~$

const char* test_locales[] = {

"C", "POSIX", "en_US", "en_US.UTF-8",

"pl_PL",

"pl_PL.ISO8859-2"

};

printf("Trying c locales...\n"); for(size_t x = 0; x < sizeof(test_locales)/sizeof(char*); x++)

try_c_locale(test_locales[x]);

printf("\n");

printf("Trying C++ locales...\n"); for(size_t x = 0; x < sizeof(test_locales)/sizeof(char*); x++)

try_cpp_locale(test_locales[x]);

}

the output clearly states there is something wrong:

Trying c locales... Succeeded in calling setlocale(LC_ALL, "C") Succeeded in calling setlocale(LC_ALL, "POSIX") Succeeded in calling setlocale(LC_ALL, "en_US") Succeeded in calling setlocale(LC_ALL, "en_US.UTF-8") Succeeded in calling setlocale(LC_ALL, "pl_PL") Succeeded in calling setlocale(LC_ALL, "pl_PL.ISO8859-2")

Trying C++ locales... Succeeded ctor for std::locale with "C" Succeeded ctor for std::locale with "POSIX" Failed ctor for std::locale with "en_US": locale::facet::_S_create_c_locale name not valid Failed ctor for std::locale with "en_US.UTF-8": locale::facet::_S_create_c_locale name not valid Failed ctor for std::locale with "pl_PL": locale::facet::_S_create_c_locale name not valid Failed ctor for std::locale with "pl_PL.ISO8859-2": locale::facet::_S_create_c_locale name not valid

a google serach delivers this:

​http://groups.google.com/group/gnu.gcc.help/browse_thread/thread/99d874aed6b46fdd

appearantly, a --enable-clocale to configure might do something

however, macport's configure stage does not allow for adding options (or I could not find it)

• could this be fixed in gcc? (in libstdc++)
• could this be added to macport (adding extra configure options)