1// RUN: %clang_cc1 -fsyntax-only -verify -std=c++14 %s
2
3#include <stddef.h>
4
5struct 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
10namespace ns { void operator "" _ns_good (const char *); }
11
12// Check extern "C++" declarations
13extern "C++" void operator "" _extern_good (const char *);
14extern "C++" { void operator "" _extern_good (const char *); }
15
16void fn () { void operator "" _fn_good (const char *); }
17
18// One-param declarations (const char * was already checked)
19void operator "" _good (char);
20void operator "" _good (wchar_t);
21void operator "" _good (char16_t);
22void operator "" _good (char32_t);
23void operator "" _good (unsigned long long);
24void operator "" _good (long double);
25
26// Two-param declarations
27void operator "" _good (const char *, size_t);
28void operator "" _good (const wchar_t *, size_t);
29void operator "" _good (const char16_t *, size_t);
30void operator "" _good (const char32_t *, size_t);
31
32// Check typedef and array equivalences
33void operator "" _good (const char[]);
34typedef const char c;
35void operator "" _good (c*);
36
37// Check extra cv-qualifiers
38void 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
41template <char...> void operator "" _good ();
42
43template <typename...> void operator "" _invalid(); // expected-error {{template parameter list for literal operator must be either 'char...' or 'typename T, T...'}}
44template <wchar_t...> void operator "" _invalid();  // expected-error {{template parameter list for literal operator must be either 'char...' or 'typename T, T...'}}
45template <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; };
49void test_if_2() { "foo"if; } // expected-error {{no matching literal operator for call to 'operator""if'}}
50