1 | // RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0 |
2 | |
3 | using size_t = decltype(sizeof(int)); |
4 | enum class LitKind { |
5 | Char, WideChar, Char16, Char32, |
6 | CharStr, WideStr, Char16Str, Char32Str, |
7 | Integer, Floating, Raw, Template |
8 | }; |
9 | constexpr LitKind operator"" _kind(char p) { return LitKind::Char; } |
10 | constexpr LitKind operator"" _kind(wchar_t p) { return LitKind::WideChar; } |
11 | constexpr LitKind operator"" _kind(char16_t p) { return LitKind::Char16; } |
12 | constexpr LitKind operator"" _kind(char32_t p) { return LitKind::Char32; } |
13 | constexpr LitKind operator"" _kind(const char *p, size_t n) { return LitKind::CharStr; } |
14 | constexpr LitKind operator"" _kind(const wchar_t *p, size_t n) { return LitKind::WideStr; } |
15 | constexpr LitKind operator"" _kind(const char16_t *p, size_t n) { return LitKind::Char16Str; } |
16 | constexpr LitKind operator"" _kind(const char32_t *p, size_t n) { return LitKind::Char32Str; } |
17 | constexpr LitKind operator"" _kind(unsigned long long n) { return LitKind::Integer; } |
18 | constexpr LitKind operator"" _kind(long double n) { return LitKind::Floating; } |
19 | constexpr LitKind operator"" _kind2(const char *p) { return LitKind::Raw; } |
20 | template<char ...Cs> constexpr LitKind operator"" _kind3() { return LitKind::Template; } |
21 | |
22 | static_assert('x'_kind == LitKind::Char, ""); |
23 | static_assert(L'x'_kind == LitKind::WideChar, ""); |
24 | static_assert(u'x'_kind == LitKind::Char16, ""); |
25 | static_assert(U'x'_kind == LitKind::Char32, ""); |
26 | static_assert("foo"_kind == LitKind::CharStr, ""); |
27 | static_assert(u8"foo"_kind == LitKind::CharStr, ""); |
28 | static_assert(L"foo"_kind == LitKind::WideStr, ""); |
29 | static_assert(u"foo"_kind == LitKind::Char16Str, ""); |
30 | static_assert(U"foo"_kind == LitKind::Char32Str, ""); |
31 | static_assert(194_kind == LitKind::Integer, ""); |
32 | static_assert(0377_kind == LitKind::Integer, ""); |
33 | static_assert(0x5ffc_kind == LitKind::Integer, ""); |
34 | static_assert(.5954_kind == LitKind::Floating, ""); |
35 | static_assert(1._kind == LitKind::Floating, ""); |
36 | static_assert(1.e-2_kind == LitKind::Floating, ""); |
37 | static_assert(4e6_kind == LitKind::Floating, ""); |
38 | static_assert(4e6_kind2 == LitKind::Raw, ""); |
39 | static_assert(4e6_kind3 == LitKind::Template, ""); |
40 | |
41 | constexpr const char *fractional_digits_impl(const char *p) { |
42 | return *p == '.' ? p + 1 : *p ? fractional_digits_impl(p + 1) : 0; |
43 | } |
44 | constexpr const char *operator"" _fractional_digits(const char *p) { |
45 | return fractional_digits_impl(p) ?: p; |
46 | } |
47 | constexpr bool streq(const char *p, const char *q) { |
48 | return *p == *q && (!*p || streq(p+1, q+1)); |
49 | } |
50 | |
51 | static_assert(streq(143.97_fractional_digits, "97"), ""); |
52 | static_assert(streq(0x786_fractional_digits, "0x786"), ""); |
53 | static_assert(streq(.4_fractional_digits, "4"), ""); |
54 | static_assert(streq(4._fractional_digits, ""), ""); |
55 | static_assert(streq(1e+97_fractional_digits, "1e+97"), ""); |
56 | static_assert(streq(0377_fractional_digits, "0377"), ""); |
57 | static_assert(streq(0377.5_fractional_digits, "5"), ""); |
58 | |
59 | int operator"" _ambiguous(char); // expected-note {{candidate}} |
60 | namespace N { |
61 | void *operator"" _ambiguous(char); // expected-note {{candidate}} |
62 | } |
63 | using namespace N; |
64 | int k = 'x'_ambiguous; // expected-error {{ambiguous}} |
65 | |
66 | int operator"" _deleted(unsigned long long) = delete; // expected-note {{here}} |
67 | int m = 42_deleted; // expected-error {{attempt to use a deleted}} |
68 | |
69 | namespace 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 | |
79 | namespace 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 | |
116 | constexpr unsigned mash(unsigned a) { |
117 | return 0x93ae27b5 * ((a >> 13) | a << 19); |
118 | } |
119 | template<typename=void> constexpr unsigned hash(unsigned a) { return a; } |
120 | template<char C, char...Cs> constexpr unsigned hash(unsigned a) { |
121 | return hash<Cs...>(mash(a ^ mash(C))); |
122 | } |
123 | template<typename T, T v> struct constant { constexpr static T value = v; }; |
124 | template<char...Cs> constexpr unsigned operator"" _hash() { |
125 | return constant<unsigned, hash<Cs...>(0)>::value; |
126 | } |
127 | static_assert(0x1234_hash == 0x103eff5e, ""); |
128 | static_assert(hash<'0', 'x', '1', '2', '3', '4'>(0) == 0x103eff5e, ""); |
129 | |
130 | // Functions and literal suffixes go in separate namespaces. |
131 | namespace 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 | |
139 | namespace 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 | |
145 | namespace 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 | |