clang/test/CXX/lex/lex.literal/lex.ext/p14.cpp

   1 // RUN: %clang_cc1 -std=c++2a -verify -triple x86_64-unknown-linux %s
   2
   3 template <typename T, T... cs> struct check; // expected-note {{template is declared here}}
   4 template <>
   5 struct check<wchar_t, 34, 1090, 1077, 1089, 1090, 32, 65536> {};
   6 template <typename T, T... str> int operator""_x() { // #1 expected-warning {{string literal operator templates are a GNU extension}}
   7   check<T, str...> chars;                            // expected-error {{implicit instantiation of undefined template 'check<wchar_t, L'"', L'\u0442', L'\u0435', L'\u0441', L'\u0442', L'_', L'\U00010000'>'}}
   8   return 1;
   9 }
  10 void *operator""_x(const char *); // #2
  11 int h = LR"("тест_𐀀)"_x;          // expected-note {{in instantiation of function template specialization 'operator""_x<wchar_t, L'"', L'\u0442', L'\u0435', L'\u0441', L'\u0442', L'_', L'\U00010000'>' requested here}}