31 const char str_lit[] =
"123456789A";
32 const std::string_view sv(str_lit);
33 char buffer[4] = { 0 };
37 using test_alloc = __gnu_test::tracker_allocator<char>;
38 std::basic_string<char, std::char_traits<char>, test_alloc>
40 static_assert( std::is_same<
decltype(
s2)::allocator_type, test_alloc>
::value,
41 "to_string() uses custom allocator" );
43 auto s3 =
static_cast<std::string
>(sv);