1 // RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s 2 3 #include <stddef.h> 4 5 struct tag { 6 void operator "" _tag_bad (const char *); // expected-error {{literal operator 'operator""_tag_bad' must be in a namespace or global scope}} 7 friend void operator "" _tag_good (const char *); 8 }; 9 10 namespace ns { void operator "" _ns_good (const char *); } 11 12 // Check extern "C++" declarations 13 extern "C++" void operator "" _extern_good (const char *); 14 extern "C++" { void operator "" _extern_good (const char *); } 15 16 void fn () { void operator "" _fn_good (const char *); } 17 18 // One-param declarations (const char * was already checked) 19 void operator "" _good (char); 20 void operator "" _good (wchar_t); 21 void operator "" _good (char16_t); 22 void operator "" _good (char32_t); 23 void operator "" _good (unsigned long long); 24 void operator "" _good (long double); 25 26 // Two-param declarations 27 void operator "" _good (const char *, size_t); 28 void operator "" _good (const wchar_t *, size_t); 29 void operator "" _good (const char16_t *, size_t); 30 void operator "" _good (const char32_t *, size_t); 31 32 // Check typedef and array equivalences 33 void operator "" _good (const char[]); 34 typedef const char c; 35 void operator "" _good (c*); 36 37 // Check extra cv-qualifiers 38 void operator "" _cv_good (volatile const char *, const size_t); // expected-error {{invalid literal operator parameter type 'const volatile char *', did you mean 'const char *'?}} 39 40 // Template declaration 41 template <char...> void operator "" _good (); 42 43 template <typename...> void operator "" _invalid(); // expected-error {{template parameter list for literal operator must be either 'char...' or 'typename T, T...'}} 44 template <wchar_t...> void operator "" _invalid(); // expected-error {{template parameter list for literal operator must be either 'char...' or 'typename T, T...'}} 45 template <unsigned long long...> void operator "" _invalid(); // expected-error {{template parameter list for literal operator must be either 'char...' or 'typename T, T...'}} 46 47 _Complex float operator""if(long double); // expected-warning {{reserved}} 48 _Complex float test_if_1() { return 2.0f + 1.5if; }; 49 void test_if_2() { "foo"if; } // expected-error {{no matching literal operator for call to 'operator""if'}} 50