[Bug libstdc++/114101] FAIL: 26_numerics/headers/cmath/functions_std_c++17.cc -std=gnu++17 (test for excess errors)

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114101

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This two depend on _GLIBCXX_USE_NL_LANGINFO_L which is set by:

  AC_TRY_COMPILE([
  #include <locale.h>
  #if __has_include(<xlocale.h>)
  # include <xlocale.h>
  #endif
  #include <langinfo.h>
  ],[
    locale_t loc = newlocale(LC_ALL_MASK, "", (locale_t)0);
    const char* enc = nl_langinfo_l(CODESET, loc);
    freelocale(loc);
  ], [ac_nl_langinfo_l=yes], [ac_nl_langinfo_l=no])