On 2026-01-05 10:12, Jonathan Wakely wrote:
{
// Unicode literals
char const *utf8 = u8"UTF-8 string \u2500";
char16_t const *utf16 = u"UTF-8 string \u2500";
char32_t const *utf32 = U"UTF-32 string \u2500";
}
That first statement is not valid in C++20,
Thanks for reporting this. I assume removing that first statement fixes
things. Although we could do that for Gnulib, in upstream Autoconf we
ran into that problem, removed the first statement here:
https://cgit.git.savannah.gnu.org/cgit/autoconf.git/commit/?id=e6c9cb69c8c0a4ef9ce0538d7b4106dad3d7ad47
tried to adjust further to C++14 through C++23 here:
https://cgit.git.savannah.gnu.org/cgit/autoconf.git/commit/?id=f6522328c71a62e3d182def319167ac15c8feaa5
but then decided that it's a fool's errand for 'configure' to change the
C++ version, so we changed things so that AC_PROG_CXX no longer does that:
https://cgit.git.savannah.gnu.org/cgit/autoconf.git/commit/?id=056518b94ecd487bcbefdb69046b3f52c4168222
I assume Gnulib should do likewise?
