1 // RUN: %clang_cc1 -fsyntax-only -std=c++11 -verify %s 2 3 using size_t = decltype(sizeof(int)); 4 namespace std { 5 struct string {}; 6 } 7 8 template<typename T, typename U> struct same_type; 9 template<typename T> struct same_type<T, T> {}; 10 11 namespace std_example { 12 13 long double operator "" _w(long double); 14 std::string operator "" _w(const char16_t*, size_t); 15 unsigned operator "" _w(const char*); 16 int main() { 17 auto v1 = 1.2_w; // calls operator "" _w(1.2L) 18 auto v2 = u"one"_w; // calls operator "" _w(u"one", 3) 19 auto v3 = 12_w; // calls operator "" _w("12") 20 "two"_w; // expected-error {{no matching literal operator}} 21 22 same_type<decltype(v1), long double> test1; 23 same_type<decltype(v2), std::string> test2; 24 same_type<decltype(v3), unsigned> test3; 25 } 26 27 } 28
