*/
template<typename _CharT, typename _Traits, typename _Alloc>
_GLIBCXX20_CONSTEXPR
- inline basic_string<_CharT, _Traits, _Alloc>
+ basic_string<_CharT, _Traits, _Alloc>
operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
- const _CharT* __rhs)
- {
- basic_string<_CharT, _Traits, _Alloc> __str(__lhs);
- __str.append(__rhs);
- return __str;
- }
+ const _CharT* __rhs);
/**
* @brief Concatenate string and character.
}
template<typename _CharT, typename _Traits, typename _Alloc>
+ _GLIBCXX20_CONSTEXPR
+ basic_string<_CharT, _Traits, _Alloc>
+ operator+(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
+ const _CharT* __rhs)
+ {
+ __glibcxx_requires_string(__rhs);
+ typedef basic_string<_CharT, _Traits, _Alloc> __string_type;
+ typedef typename __string_type::size_type __size_type;
+ typedef typename __gnu_cxx::__alloc_traits<_Alloc>::template
+ rebind<_CharT>::other _Char_alloc_type;
+ typedef __gnu_cxx::__alloc_traits<_Char_alloc_type> _Alloc_traits;
+ const __size_type __len = _Traits::length(__rhs);
+ __string_type __str(_Alloc_traits::_S_select_on_copy(
+ __lhs.get_allocator()));
+ __str.reserve(__len + __lhs.size());
+ __str.append(__lhs);
+ __str.append(__rhs, __len);
+ return __str;
+ }
+
+ template<typename _CharT, typename _Traits, typename _Alloc>
_GLIBCXX_STRING_CONSTEXPR
typename basic_string<_CharT, _Traits, _Alloc>::size_type
basic_string<_CharT, _Traits, _Alloc>::