1 // { dg-options "-std=c++17 -fchar8_t" }
2 
3 #include <cstdint>
4 #include <cassert>
5 
6 int operator"" _foo(const char*)                  { return 0; }
7 int operator"" _foo(unsigned long long int)       { return 1; }
8 int operator"" _foo(long double)                  { return 2; }
9 int operator"" _foo(char)                         { return 3; }
10 int operator"" _foo(wchar_t)                      { return 4; }
11 int operator"" _foo(char8_t)                      { return 5; }
12 int operator"" _foo(char16_t)                     { return 6; }
13 int operator"" _foo(char32_t)                     { return 7; }
14 int operator"" _foo(const char*, std::size_t)     { return 8; }
15 int operator"" _foo(const wchar_t*, std::size_t)  { return 9; }
16 int operator"" _foo(const char8_t*, std::size_t)  { return 10; }
17 int operator"" _foo(const char16_t*, std::size_t) { return 11; }
18 int operator"" _foo(const char32_t*, std::size_t) { return 12; }
19 template<char...> int operator"" _foo2()          { return 20; }
20 int operator"" _foo2(unsigned long long int)      { return 21; }
21 
22 int
main()23 main()
24 {
25   assert(123_foo == 1);
26   assert(0.123_foo == 2);
27   assert('c'_foo == 3);
28   assert(L'c'_foo == 4);
29   assert(u8'c'_foo == 5);
30   assert(u'c'_foo == 6);
31   assert(U'c'_foo == 7);
32   assert("abc"_foo == 8);
33   assert(L"abc"_foo == 9);
34   assert(u8"abc"_foo == 10);
35   assert(u"abc"_foo == 11);
36   assert(U"abc"_foo == 12);
37   assert(123_foo2 == 21);
38 }
39