[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <C7GN68S9FS2B.19BJN1CBUFA60@mussels>
Date: Mon, 30 Nov 2020 10:44:49 -0300
From: Érico Nogueira <ericonr@...root.org>
To: <musl@...ts.openwall.com>, "Dong Brett" <brett.browning.dong@...il.com>
Subject: Re: Question on C++ locale
On Mon Nov 30, 2020 at 8:35 AM -03, Szabolcs Nagy wrote:
> * Dong Brett <brett.browning.dong@...il.com> [2020-11-30 18:41:33
> +0800]:
> > However, the following C++ code does not work (our software uses std::locale in C++ standard library for locale related stuff):
> > #include <langinfo.h>
> > #include <locale.h>
> > #include <locale>
> > using namespace std;
> > int main()
> > {
> > std::locale::global(locale(""));
> > initscr();
> > printw("LC_ALL: %s\n", setlocale(LC_ALL, NULL));
> > printw("C++ locale: %s\n", locale().name().c_str());
> > printw("CODESET: %s\n", nl_langinfo(CODESET));
> > printw("Hello, world!\n");
> > printw("你好，世界!\n");
> > refresh();
> > getch();
> > endwin();
> > return 0;
> > }
>
> fwiw for me even the first line fails.
> i don't know how c++ locales are supposed to work.
>From [1], it seems that C++ locales are supposed to affect the global
locale as well, so they should call setlocale() when appropriate.
- [1] https://www.cplusplus.com/reference/locale/locale/
Unfortunately, I assume libstdc++ uses their generic locale support on
musl... From gcc-10.2.0/libstdc++-v3/config/locale/generic/c_locale.cc:
void
locale::facet::_S_create_c_locale(__c_locale& __cloc, const char* __s,
__c_locale)
{
// Currently, the generic model only supports the "C" locale.
// See http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html
__cloc = 0;
if (strcmp(__s, "C"))
__throw_runtime_error(__N("locale::facet::_S_create_c_locale "
"name not valid"));
}
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
