[RFH] Which is the value of __nl_langinfo_l(__CURRENCY_SYMBOL, loc) for xx_XX@euro locales?

[Paolo Carlini]

Hi all,

I'm working on tweaking libstdc++-v3 testsuite to work well with the new 
EURO localedata and I'm puzzled about the following testcase:

#define _GNU_SOURCE 1
#include <locale.h>
#include <langinfo.h>

int main()
{
  __locale_t    loc;
  char* _M_curr_symbol;
 
  const char*   __s = "de_DE@euro";
  loc = __newlocale(1 << LC_ALL, __s, 0);
  _M_curr_symbol = __nl_langinfo_l(__CURRENCY_SYMBOL, loc);
  /* _M_curr_symbol == \244 */
  __freelocale(loc);
  return 0;
}

On my i686-pc-linux-gnu, glibc2.2.5 I get _M_curr_symbol equal to a single char, octal \244, when using xx_XX@euro localedata (and asking for the local, vs international, symbol).

I'm really triggering an "undefined behavior" or does in fact make sense asking for a local monetary symbol of a xx_XX@euro locale, and \244 is part of a standard specification??

Thank,
Paolo.