1 | // RUN: %clang_cc1 -std=c++11 -verify %s -fms-extensions -triple x86_64-apple-darwin9.0.0 |
2 | |
3 | // A ud-suffix cannot be used on string literals in a whole bunch of contexts: |
4 | |
5 | #include "foo"_bar // expected-error {{expected "FILENAME" or <FILENAME>}} |
6 | #line 1 "foo"_bar // expected-error {{user-defined suffix cannot be used here}} |
7 | # 1 "foo"_bar 1 // expected-error {{user-defined suffix cannot be used here}} |
8 | #ident "foo"_bar // expected-error {{user-defined suffix cannot be used here}} |
9 | _Pragma("foo"_bar) // expected-error {{user-defined suffix cannot be used here}} |
10 | #pragma comment(lib, "foo"_bar) // expected-error {{user-defined suffix cannot be used here}} |
11 | _Pragma("comment(lib, \"foo\"_bar)") // expected-error {{user-defined suffix cannot be used here}} |
12 | #pragma message "hi"_there // expected-error {{user-defined suffix cannot be used here}} expected-warning {{hi}} |
13 | #pragma push_macro("foo"_bar) // expected-error {{user-defined suffix cannot be used here}} |
14 | #if __has_warning("-Wan-island-to-discover"_bar) // expected-error {{user-defined suffix cannot be used here}} |
15 | #elif __has_include("foo"_bar) // expected-error {{expected "FILENAME" or <FILENAME>}} |
16 | #endif |
17 | |
18 | extern "C++"_x {} // expected-error {{user-defined suffix cannot be used here}} |
19 | |
20 | int f() { |
21 | asm("mov %eax, %rdx"_foo); // expected-error {{user-defined suffix cannot be used here}} |
22 | } |
23 | |
24 | static_assert(true, "foo"_bar); // expected-error {{user-defined suffix cannot be used here}} |
25 | |
26 | int cake() __attribute__((availability(macosx, unavailable, message = "is a lie"_x))); // expected-error {{user-defined suffix cannot be used here}} |
27 | |
28 | // A ud-suffix cannot be used on character literals in preprocessor constant |
29 | // expressions: |
30 | #if 'x'_y - u'x'_z // expected-error 2{{character literal with user-defined suffix cannot be used in preprocessor constant expression}} |
31 | #error error |
32 | #endif |
33 | |
34 | // A ud-suffix cannot be used on integer literals in preprocessor constant |
35 | // expressions: |
36 | #if 0_foo // expected-error {{integer literal with user-defined suffix cannot be used in preprocessor constant expression}} |
37 | #error error |
38 | #endif |
39 | |
40 | // But they can appear in expressions. |
41 | constexpr char operator"" _id(char c) { return c; } |
42 | constexpr wchar_t operator"" _id(wchar_t c) { return c; } |
43 | constexpr char16_t operator"" _id(char16_t c) { return c; } |
44 | constexpr char32_t operator"" _id(char32_t c) { return c; } |
45 | |
46 | using size_t = decltype(sizeof(int)); |
47 | constexpr const char operator"" _id(const char *p, size_t n) { return *p; } |
48 | constexpr const wchar_t operator"" _id(const wchar_t *p, size_t n) { return *p; } |
49 | constexpr const char16_t operator"" _id(const char16_t *p, size_t n) { return *p; } |
50 | constexpr const char32_t operator"" _id(const char32_t *p, size_t n) { return *p; } |
51 | |
52 | constexpr unsigned long long operator"" _id(unsigned long long n) { return n; } |
53 | constexpr long double operator"" _id(long double d) { return d; } |
54 | |
55 | template<int n> struct S {}; |
56 | S<"a"_id> sa; |
57 | S<L"b"_id> sb; |
58 | S<u8"c"_id> sc; |
59 | S<u"d"_id> sd; |
60 | S<U"e"_id> se; |
61 | |
62 | S<'w'_id> sw; |
63 | S<L'x'_id> sx; |
64 | S<u'y'_id> sy; |
65 | S<U'z'_id> sz; |
66 | |
67 | S<100_id> sn; |
68 | S<(int)1.3_id> sf; |
69 | |
70 | void h() { |
71 | (void)"test"_id "test" L"test"; |
72 | } |
73 | |
74 | // Test source location for suffix is known |
75 | const char *p = |
76 | "foo\nbar" R"x( |
77 | erk |
78 | flux |
79 | )x" "eep\x1f"\ |
80 | _no_such_suffix // expected-error {{'operator""_no_such_suffix'}} |
81 | "and a bit more" |
82 | "and another suffix"_no_such_suffix; |
83 | |
84 | char c = |
85 | '\x14'\ |
86 | _no_such_suffix; // expected-error {{'operator""_no_such_suffix'}} |
87 | |
88 | int &r = |
89 | 1234567\ |
90 | _no_such_suffix; // expected-error {{'operator""_no_such_suffix'}} |
91 | |
92 | int k = |
93 | 1234567.89\ |
94 | _no_such_suffix; // expected-error {{'operator""_no_such_suffix'}} |
95 | |
96 | // Make sure we handle more interesting ways of writing a string literal which |
97 | // is "" in translation phase 7. |
98 | void operator "\ |
99 | " _foo(unsigned long long); // ok |
100 | |
101 | void operator R"xyzzy()xyzzy" _foo(long double); // ok |
102 | |
103 | void operator"" "" R"()" "" _foo(const char *); // ok |
104 | |
105 | void operator ""_no_space(const char *); // ok |
106 | |
107 | // Ensure we diagnose the bad cases. |
108 | void operator "\0" _non_empty(const char *); // expected-error {{must be '""'}} |
109 | void operator L"" _not_char(const char *); // expected-error {{cannot have an encoding prefix}} |
110 | void operator "" "" |
111 | U"" // expected-error {{cannot have an encoding prefix}} |
112 | "" _also_not_char(const char *); |
113 | void operator "" u8"" "\u0123" "hello"_all_of_the_things ""(const char*); // expected-error {{must be '""'}} |
114 | |
115 | // Make sure we treat UCNs and UTF-8 as equivalent. |
116 | int operator""_µs(unsigned long long) {} // expected-note {{previous}} |
117 | int hundred_µs = 50_µs + 50_\u00b5s; |
118 | int operator""_\u00b5s(unsigned long long) {} // expected-error {{redefinition of 'operator""_µs'}} |
119 | |
120 | int operator""_\U0000212B(long double) {} // expected-note {{previous}} |
121 | int hundred_Å = 50.0_Å + 50._\U0000212B; |
122 | int operator""_Å(long double) {} // expected-error {{redefinition of 'operator""_Å'}} |
123 | |
124 | int operator""_𐀀(char) {} // expected-note {{previous}} |
125 | int 𐀀 = '4'_𐀀 + '2'_\U00010000; |
126 | int operator""_\U00010000(char) {} // expected-error {{redefinition of 'operator""_𐀀'}} |
127 | |
128 | // These all declare the same function. |
129 | int operator""_℮""_\u212e""_\U0000212e""(const char*, size_t); |
130 | int operator""_\u212e""_\U0000212e""_℮""(const char*, size_t); |
131 | int operator""_\U0000212e""_℮""_\u212e""(const char*, size_t); |
132 | int mix_ucn_utf8 = ""_℮""_\u212e""_\U0000212e""; |
133 | |
134 | void operator""_℮""_ℯ(unsigned long long) {} // expected-error {{differing user-defined suffixes ('_℮' and '_ℯ') in string literal concatenation}} |
135 | void operator""_℮""_\u212f(unsigned long long) {} // expected-error {{differing user-defined suffixes ('_℮' and '_ℯ') in string literal concatenation}} |
136 | void operator""_\u212e""_ℯ(unsigned long long) {} // expected-error {{differing user-defined suffixes ('_℮' and '_ℯ') in string literal concatenation}} |
137 | void operator""_\u212e""_\u212f(unsigned long long) {} // expected-error {{differing user-defined suffixes ('_℮' and '_ℯ') in string literal concatenation}} |
138 | |
139 | void operator""_℮""_℮(unsigned long long) {} // expected-note {{previous}} |
140 | void operator""_\u212e""_\u212e(unsigned long long) {} // expected-error {{redefinition}} |
141 | |
142 | #define ¢ *0.01 // expected-error {{macro name must be an identifier}} |
143 | constexpr int operator""_¢(long double d) { return d * 100; } // expected-error {{non-ASCII}} |
144 | constexpr int operator""_¢(unsigned long long n) { return n; } // expected-error {{non-ASCII}} |
145 | static_assert(0.02_¢ == 2_¢, ""); // expected-error 2{{non-ASCII}} |
146 | |