1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
2 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s |
3 | // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s |
4 | |
5 | char *const_cast_test(const char *var) |
6 | { |
7 | return const_cast<char*>(var); |
8 | } |
9 | |
10 | struct A { |
11 | virtual ~A() {} |
12 | }; |
13 | |
14 | struct B : public A { |
15 | }; |
16 | |
17 | struct B *dynamic_cast_test(struct A *a) |
18 | { |
19 | return dynamic_cast<struct B*>(a); |
20 | } |
21 | |
22 | char *reinterpret_cast_test() |
23 | { |
24 | return reinterpret_cast<char*>(0xdeadbeef); |
25 | } |
26 | |
27 | double static_cast_test(int i) |
28 | { |
29 | return static_cast<double>(i); |
30 | } |
31 | |
32 | char postfix_expr_test() |
33 | { |
34 | return reinterpret_cast<char*>(0xdeadbeef)[0]; |
35 | } |
36 | |
37 | // This was being incorrectly tentatively parsed. |
38 | namespace test1 { |
39 | template <class T> class A {}; // expected-note 2{{here}} |
40 | void foo() { A<int>(*(A<int>*)0); } // expected-warning {{binding dereferenced null pointer to reference has undefined behavior}} |
41 | } |
42 | |
43 | typedef char* c; |
44 | typedef A* a; |
45 | void test2(char x, struct B * b) { |
46 | (void)const_cast<::c>(&x); |
47 | #if __cplusplus <= 199711L |
48 | // expected-error@-2 {{found '<::' after a const_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
49 | #endif |
50 | |
51 | (void)dynamic_cast<::a>(b); |
52 | #if __cplusplus <= 199711L |
53 | // expected-error@-2 {{found '<::' after a dynamic_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
54 | #endif |
55 | |
56 | (void)reinterpret_cast<::c>(x); |
57 | #if __cplusplus <= 199711L |
58 | // expected-error@-2 {{found '<::' after a reinterpret_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
59 | #endif |
60 | |
61 | (void)static_cast<::c>(&x); |
62 | #if __cplusplus <= 199711L |
63 | // expected-error@-2 {{found '<::' after a static_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
64 | #endif |
65 | |
66 | // Do not do digraph correction. |
67 | (void)static_cast<: :c>(&x); //\ |
68 | expected-error {{expected '<' after 'static_cast'}} \ |
69 | expected-error {{expected expression}}\ |
70 | expected-error {{expected ']'}}\ |
71 | expected-note {{to match this '['}} |
72 | (void)static_cast<: // expected-error {{expected '<' after 'static_cast'}} \ |
73 | expected-note {{to match this '['}} |
74 | :c>(&x); // expected-error {{expected expression}} \ |
75 | expected-error {{expected ']'}} |
76 | #define LC <: |
77 | #define C : |
78 | test1::A LC:B> c; // expected-error {{class template 'test1::A' requires template arguments}} expected-error 2{{}} |
79 | (void)static_cast LC:c>(&x); // expected-error {{expected '<' after 'static_cast'}} expected-error 2{{}} expected-note{{}} |
80 | test1::A<:C B> d; // expected-error {{class template 'test1::A' requires template arguments}} expected-error 2{{}} |
81 | (void)static_cast<:C c>(&x); // expected-error {{expected '<' after 'static_cast'}} expected-error 2{{}} expected-note{{}} |
82 | |
83 | #define LCC <:: |
84 | test1::A LCC B> e; |
85 | #if __cplusplus <= 199711L |
86 | // expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
87 | #endif |
88 | |
89 | (void)static_cast LCC c>(&x); |
90 | #if __cplusplus <= 199711L |
91 | // expected-error@-2 {{found '<::' after a static_cast which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
92 | #endif |
93 | } |
94 | |
95 | // This note comes from "::D[:F> A5;" |
96 | template <class T> class D {}; // expected-note{{template is declared here}} |
97 | template <class T> void E() {}; |
98 | class F {}; |
99 | |
100 | void test3() { |
101 | ::D<::F> A1; |
102 | #if __cplusplus <= 199711L |
103 | // expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
104 | #endif |
105 | |
106 | D<::F> A2; |
107 | #if __cplusplus <= 199711L |
108 | // expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
109 | #endif |
110 | |
111 | ::E<::F>(); |
112 | #if __cplusplus <= 199711L |
113 | // expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
114 | #endif |
115 | |
116 | E<::F>(); |
117 | #if __cplusplus <= 199711L |
118 | // expected-error@-2 {{found '<::' after a template name which forms the digraph '<:' (aka '[') and a ':', did you mean '< ::'?}} |
119 | #endif |
120 | |
121 | ::D< ::F> A3; |
122 | D< ::F> A4; |
123 | ::E< ::F>(); |
124 | E< ::F>(); |
125 | |
126 | // Make sure that parser doesn't expand '[:' to '< ::' |
127 | ::D[:F> A5; // expected-error {{class template '::D' requires template arguments}} \ |
128 | // expected-error {{expected expression}} \ |
129 | // expected-error {{expected unqualified-id}} |
130 | } |
131 | |
132 | // Ensure that a C-style cast doesn't turn off colon protection. |
133 | void PR19748() { |
134 | struct A {}; |
135 | int A = 0, b; |
136 | int test1 = true ? (int)A : b; |
137 | |
138 | struct f {}; |
139 | extern B f(), (*p)(); |
140 | (true ? (B(*)())f : p)(); |
141 | } |
142 | |
143 | void PR19751(int n) { |
144 | struct T { void operator++(int); }; |
145 | (T())++; // ok, not an ill-formed cast to function type |
146 | (T())++n; // expected-error {{C-style cast from 'int' to 'T ()' is not allowed}} |
147 | } |
148 | |
149 | // PR13619. Must be at end of file. |
150 | int n = reinterpret_cast // expected-error {{expected '<'}} expected-error {{expected ';'}} |
151 | |