1 | // RUN: %clang_cc1 -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic-errors %s |
2 | // RUN: %clang_cc1 -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic-errors -std=gnu++98 %s |
3 | // RUN: %clang_cc1 -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic-errors -std=gnu++11 %s |
4 | // RUN: %clang_cc1 -Wno-int-to-pointer-cast -fsyntax-only -verify -pedantic-errors -x objective-c++ %s |
5 | |
6 | void f() { |
7 | int a; |
8 | struct S { int m; }; |
9 | typedef S *T; |
10 | |
11 | // Expressions. |
12 | T(a)->m = 7; |
13 | int(a)++; // expected-error {{assignment to cast is illegal}} |
14 | __extension__ int(a)++; // expected-error {{assignment to cast is illegal}} |
15 | __typeof(int)(a,5)<<a; // expected-error {{excess elements in scalar initializer}} |
16 | void(a), ++a; |
17 | if (int(a)+1) {} |
18 | for (int(a)+1;;) {} // expected-warning {{expression result unused}} |
19 | a = sizeof(int()+1); |
20 | a = sizeof(int(1)); |
21 | typeof(int()+1) a2; // expected-error {{extension used}} |
22 | (int(1)); // expected-warning {{expression result unused}} |
23 | |
24 | // type-id |
25 | (int())1; // expected-error {{C-style cast from 'int' to 'int ()' is not allowed}} |
26 | |
27 | // Declarations. |
28 | int fd(T(a)); // expected-warning {{disambiguated as a function declaration}} expected-note{{add a pair of parentheses}} |
29 | T(*d)(int(p)); // expected-note {{previous}} |
30 | typedef T td(int(p)); |
31 | extern T tp(int(p)); |
32 | T d3(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}} |
33 | T d3v(void); |
34 | typedef T d3t(); |
35 | extern T f3(); |
36 | __typeof(*T()) f4(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}} |
37 | typedef void *V; |
38 | __typeof(*V()) f5(); // expected-error {{ISO C++ does not allow indirection on operand of type 'V' (aka 'void *')}} |
39 | T multi1, |
40 | multi2(); // expected-warning {{empty parentheses interpreted as a function declaration}} expected-note {{replace parentheses with an initializer}} |
41 | T(d)[5]; // expected-error {{redefinition of 'd'}} |
42 | typeof(int[])(f) = { 1, 2 }; // expected-error {{extension used}} |
43 | void(b)(int); |
44 | int(d2) __attribute__(()); |
45 | if (int(a)=1) {} |
46 | int(d3(int())); |
47 | } |
48 | |
49 | struct RAII { |
50 | RAII(); |
51 | RAII(int); |
52 | ~RAII(); |
53 | }; |
54 | |
55 | struct NotRAII { |
56 | NotRAII(); |
57 | NotRAII(int); |
58 | }; |
59 | |
60 | void func(); |
61 | void func2(short); |
62 | namespace N { |
63 | struct S; |
64 | int n; |
65 | |
66 | void emptyParens() { |
67 | RAII raii(); // expected-warning {{function declaration}} expected-note {{remove parentheses to declare a variable}} |
68 | int a, b, c, d, e, // expected-note {{change this ',' to a ';' to call 'func'}} |
69 | func(); // expected-warning {{function declaration}} expected-note {{replace parentheses with an initializer}} |
70 | |
71 | S s(); // expected-warning {{function declaration}} |
72 | #if __cplusplus >= 201103L |
73 | // expected-note@-2 {{replace parentheses with an initializer to declare a variable}} |
74 | #endif |
75 | } |
76 | void nonEmptyParens() { |
77 | int f = 0, // g = 0; expected-note {{change this ',' to a ';' to call 'func2'}} |
78 | func2(short(f)); // expected-warning {{function declaration}} expected-note {{add a pair of parentheses}} |
79 | |
80 | RAII(n); // expected-warning {{parentheses were disambiguated as redundant parentheses around declaration of variable named 'n'}} |
81 | // expected-note@-1 {{add a variable name to declare a 'RAII' initialized with 'n'}} |
82 | // expected-note@-2 {{add enclosing parentheses to perform a function-style cast}} |
83 | // expected-note@-3 {{remove parentheses to silence this warning}} |
84 | |
85 | RAII(undeclared1); |
86 | #pragma clang diagnostic push |
87 | #pragma clang diagnostic warning "-Wredundant-parens" |
88 | RAII(undeclared2); // expected-warning {{redundant parentheses surrounding declarator}} |
89 | #pragma clang diagnostic pop |
90 | |
91 | { |
92 | NotRAII(n); // expected-warning {{parentheses were disambiguated as redundant parentheses around declaration of variable named 'n'}} |
93 | // expected-note@-1 {{add enclosing parentheses to perform a function-style cast}} |
94 | // expected-note@-2 {{remove parentheses to silence this warning}} |
95 | } |
96 | } |
97 | } |
98 | |
99 | class C { }; |
100 | void fn(int(C)) { } // void fn(int(*fp)(C c)) { } expected-note{{candidate function}} |
101 | // not: void fn(int C); |
102 | int g(C); |
103 | |
104 | void foo() { |
105 | fn(1); // expected-error {{no matching function}} |
106 | fn(g); // OK |
107 | } |
108 | |
109 | namespace PR11874 { |
110 | void foo(); // expected-note 3 {{class 'foo' is hidden by a non-type declaration of 'foo' here}} |
111 | class foo {}; |
112 | class bar { |
113 | bar() { |
114 | const foo* f1 = 0; // expected-error {{must use 'class' tag to refer to type 'foo' in this scope}} |
115 | foo* f2 = 0; // expected-error {{must use 'class' tag to refer to type 'foo' in this scope}} |
116 | foo f3; // expected-error {{must use 'class' tag to refer to type 'foo' in this scope}} |
117 | } |
118 | }; |
119 | |
120 | int baz; // expected-note 2 {{class 'baz' is hidden by a non-type declaration of 'baz' here}} |
121 | class baz {}; |
122 | void fizbin() { |
123 | const baz* b1 = 0; // expected-error {{must use 'class' tag to refer to type 'baz' in this scope}} |
124 | baz* b2; // expected-error {{use of undeclared identifier 'b2'}} |
125 | baz b3; // expected-error {{must use 'class' tag to refer to type 'baz' in this scope}} |
126 | } |
127 | } |
128 | |
129 | namespace TemporaryFromFunctionCall { |
130 | struct A { |
131 | A(int); |
132 | }; |
133 | int f(); |
134 | int g(int); |
135 | namespace N { |
136 | void x() { |
137 | // FIXME: For the first and second of these (but not the third), we |
138 | // should produce a vexing-parse warning. |
139 | A(f()); |
140 | A(g(int())); |
141 | A(g(int)); |
142 | } |
143 | } |
144 | } |
145 | |