libstdc++: Fix check for 7-bit ASCII characters

This should check for c <= 0x7f not x < 0x7f, because 0x7f is an ASCII
character (DEL).

libstdc++-v3/ChangeLog:

	* include/bits/unicode.h (__is_single_code_unit): Fix check for
	7-bit ASCII characters.

Reviewed-by: Tomasz Kamiński <tkaminsk@redhat.com>

diff --git a/libstdc++-v3/include/bits/unicode.h b/libstdc++-v3/include/bits/unicode.h
index 88e97d41a9eb03cc0fb9129938c527e5f8ab3fa1..00efbe89ca8e117a8a943734760dd95abd4c8200 100644 (file)
--- a/libstdc++-v3/include/bits/unicode.h
+++ b/libstdc++-v3/include/bits/unicode.h
@@ -61,7 +61,7 @@ namespace __unicode
     __is_single_code_unit(char32_t __c)
     {
       if constexpr (__gnu_cxx::__int_traits<_CharT>::__max <= 0xFF)
-       return __c < 0x7F; // ASCII character
+       return __c <= 0x7F; // ASCII character
       else
        return __c < __gnu_cxx::__int_traits<_CharT>::__max
                       && __is_scalar_value(__c);