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Date: Mon, 30 Nov 2020 09:37:47 -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.
>
> $ cat a.cc
> #include <locale>
> using namespace std;
> int main()
> {
> std::locale::global(locale(""));
> return 0;
> }
>
> $ g++ a.cc
> $ ./a.out
> terminate called after throwing an instance of 'std::runtime_error'
> what(): locale::facet::_S_create_c_locale name not valid
> Aborted
For an example of this issue "in the wild", so to speak, I can only
launch supertux2 [1] with LANG=C. Exact same error message otherwise.
- [1] https://github.com/SuperTux/supertux
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