[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <62BA8BC9-9943-418A-8349-2B1FB962EDE9@gmail.com>
Date: Mon, 30 Nov 2020 18:41:33 +0800
From: Dong Brett <brett.browning.dong@...il.com>
To: musl@...ts.openwall.com
Cc: Binrui Dong <brett.browning.dong@...il.com>
Subject: Question on C++ locale
Hi all,
I am troubleshooting a locale related issue of our C++ software when building with musl. With some efforts I narrowed our problem down to the inability of setting a UTF-8 locale in C++ standard library.
The following C code prints UTF-8 characters correctly:
#include <ncurses.h>
#include <langinfo.h>
#include <locale.h>
int main()
{
setlocale(LC_ALL, "");
initscr();
printw("LC_ALL: %s\n", setlocale(LC_ALL, NULL));
printw("CODESET: %s\n", nl_langinfo(CODESET));
printw("Hello, world!\n");
printw("你好，世界!\n");
refresh();
getch();
endwin();
return 0;
}
Giving the output of
LC_ALL: C.UTF-8;C;C;C;C;C
CODESET: UTF-8
Hello, world!
你好，世界!
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;
}
Giving a corrupted output:
LC_ALL: C
C++ locale: C
CODESET: ASCII
Hello, world!
你好?~L?~V?~U~L!
Seems only ASCII C locale is available in C++. If I run the above C++ code with LANG="C.UTF-8", an exception is thrown and the program is aborted:
terminate called after throwing an instance of 'std::runtime_error'
what(): locale::facet::_S_create_c_locale name not valid
Aborted
I also tried LANG="UTF-8”, LANG="en_US.UTF-8" but none of those works. Only LANG="C" could make the program run but then only ASCII characters are supported.
My question is that is there a way to make locale in C++ standard library work with musl? Or had I done anything wrong with it?
Regards,
Brett
Content of type "text/html" skipped
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.
