1// RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0
2
3using size_t = decltype(sizeof(int));
4enum class LitKind {
5  Char, WideChar, Char16, Char32,
6  CharStr, WideStr, Char16Str, Char32Str,
7  Integer, Floating, Raw, Template
8};
9constexpr LitKind operator"" _kind(char p) { return LitKind::Char; }
10constexpr LitKind operator"" _kind(wchar_t p) { return LitKind::WideChar; }
11constexpr LitKind operator"" _kind(char16_t p) { return LitKind::Char16; }
12constexpr LitKind operator"" _kind(char32_t p) { return LitKind::Char32; }
13constexpr LitKind operator"" _kind(const char *p, size_t n) { return LitKind::CharStr; }
14constexpr LitKind operator"" _kind(const wchar_t *p, size_t n) { return LitKind::WideStr; }
15constexpr LitKind operator"" _kind(const char16_t *p, size_t n) { return LitKind::Char16Str; }
16constexpr LitKind operator"" _kind(const char32_t *p, size_t n) { return LitKind::Char32Str; }
17constexpr LitKind operator"" _kind(unsigned long long n) { return LitKind::Integer; }
18constexpr LitKind operator"" _kind(long double n) { return LitKind::Floating; }
19constexpr LitKind operator"" _kind2(const char *p) { return LitKind::Raw; }
20template<char ...Cs> constexpr LitKind operator"" _kind3() { return LitKind::Template; }
21
22static_assert('x'_kind == LitKind::Char, "");
23static_assert(L'x'_kind == LitKind::WideChar, "");
24static_assert(u'x'_kind == LitKind::Char16, "");
25static_assert(U'x'_kind == LitKind::Char32, "");
26static_assert("foo"_kind == LitKind::CharStr, "");
27static_assert(u8"foo"_kind == LitKind::CharStr, "");
28static_assert(L"foo"_kind == LitKind::WideStr, "");
29static_assert(u"foo"_kind == LitKind::Char16Str, "");
30static_assert(U"foo"_kind == LitKind::Char32Str, "");
31static_assert(194_kind == LitKind::Integer, "");
32static_assert(0377_kind == LitKind::Integer, "");
33static_assert(0x5ffc_kind == LitKind::Integer, "");
34static_assert(.5954_kind == LitKind::Floating, "");
35static_assert(1._kind == LitKind::Floating, "");
36static_assert(1.e-2_kind == LitKind::Floating, "");
37static_assert(4e6_kind == LitKind::Floating, "");
38static_assert(4e6_kind2 == LitKind::Raw, "");
39static_assert(4e6_kind3 == LitKind::Template, "");
40
41constexpr const char *fractional_digits_impl(const char *p) {
42  return *p == '.' ? p + 1 : *p ? fractional_digits_impl(p + 1) : 0;
43}
44constexpr const char *operator"" _fractional_digits(const char *p) {
45  return fractional_digits_impl(p) ?: p;
46}
47constexpr bool streq(const char *p, const char *q) {
48  return *p == *q && (!*p || streq(p+1, q+1));
49}
50
51static_assert(streq(143.97_fractional_digits, "97"), "");
52static_assert(streq(0x786_fractional_digits, "0x786"), "");
53static_assert(streq(.4_fractional_digits, "4"), "");
54static_assert(streq(4._fractional_digits, ""), "");
55static_assert(streq(1e+97_fractional_digits, "1e+97"), "");
56static_assert(streq(0377_fractional_digits, "0377"), "");
57static_assert(streq(0377.5_fractional_digits, "5"), "");
58
59int operator"" _ambiguous(char); // expected-note {{candidate}}
60namespace N {
61  void *operator"" _ambiguous(char); // expected-note {{candidate}}
62}
63using namespace N;
64int k = 'x'_ambiguous; // expected-error {{ambiguous}}
65
66int operator"" _deleted(unsigned long long) = delete; // expected-note {{here}}
67int m = 42_deleted; // expected-error {{attempt to use a deleted}}
68
69namespace Using {
70  namespace M {
71    int operator"" _using(char);
72  }
73  int k1 = 'x'_using; // expected-error {{no matching literal operator for call to 'operator "" _using'}}
74
75  using M::operator "" _using;
76  int k2 = 'x'_using;
77}
78
79namespace AmbiguousRawTemplate {
80  int operator"" _ambig1(const char *); // expected-note {{candidate}}
81  template<char...> int operator"" _ambig1(); // expected-note {{candidate}}
82
83  int k1 = 123_ambig1; // expected-error {{call to 'operator "" _ambig1' is ambiguous}}
84
85  namespace Inner {
86    template<char...> int operator"" _ambig2(); // expected-note 3{{candidate}}
87  }
88  int operator"" _ambig2(const char *); // expected-note 3{{candidate}}
89  using Inner::operator"" _ambig2;
90
91  int k2 = 123_ambig2; // expected-error {{call to 'operator "" _ambig2' is ambiguous}}
92
93  namespace N {
94    using Inner::operator"" _ambig2;
95
96    int k3 = 123_ambig2; // ok
97
98    using AmbiguousRawTemplate::operator"" _ambig2;
99
100    int k4 = 123_ambig2; // expected-error {{ambiguous}}
101
102    namespace M {
103
104      template<char...> int operator"" _ambig2();
105
106      int k5 = 123_ambig2; // ok
107    }
108
109    int operator"" _ambig2(unsigned long long);
110
111    int k6 = 123_ambig2; // ok
112    int k7 = 123._ambig2; // expected-error {{ambiguous}}
113  }
114}
115
116constexpr unsigned mash(unsigned a) {
117 return 0x93ae27b5 * ((a >> 13) | a << 19);
118}
119template<typename=void> constexpr unsigned hash(unsigned a) { return a; }
120template<char C, char...Cs> constexpr unsigned hash(unsigned a) {
121 return hash<Cs...>(mash(a ^ mash(C)));
122}
123template<typename T, T v> struct constant { constexpr static T value = v; };
124template<char...Cs> constexpr unsigned operator"" _hash() {
125  return constant<unsigned, hash<Cs...>(0)>::value;
126}
127static_assert(0x1234_hash == 0x103eff5e, "");
128static_assert(hash<'0', 'x', '1', '2', '3', '4'>(0) == 0x103eff5e, "");
129
130// Functions and literal suffixes go in separate namespaces.
131namespace Namespace {
132  template<char...> int operator"" _x();
133  int k = _x(); // expected-error {{undeclared identifier '_x'}}
134
135  int _y(unsigned long long);
136  int k2 = 123_y; // expected-error {{no matching literal operator for call to 'operator "" _y'}}
137}
138
139namespace PR14950 {
140  template<...> // expected-error {{expected template parameter}}
141  int operator"" _b(); // expected-error {{no function template matches function template specialization}}
142  int main() { return 0_b; } // expected-error {{no matching literal operator for call to 'operator "" _b'}}
143}
144
145namespace bad_names {
146  template<char...> int operator""_x();
147
148  template<typename T> void f() {
149    class T:: // expected-error {{anonymous class}} expected-warning {{does not declare anything}}
150        operator // expected-error {{expected identifier}}
151            ""_q<'a'>;
152
153    T::template operator""_q<'a'>(); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}}
154    T::template operator""_q<'a'>::X; // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}}
155    T::operator""_q<'a'>(); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}}
156    typename T::template operator""_q<'a'> a; // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}} expected-error +{{}}
157    typename T::operator""_q(""); // expected-error +{{}} expected-note {{to match}}
158    T::operator""_q(""); // expected-error {{non-namespace scope 'T::' cannot have a literal operator member}}
159
160    bad_names::operator""_x<'a', 'b', 'c'>();
161  };
162
163  struct S {};
164  void g() {
165    S::operator""_q(); // expected-error {{non-namespace scope 'S::' cannot have a literal operator member}}
166  }
167}
168