1 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-error=non-pod-varargs |
2 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++98 %s -Wno-error=non-pod-varargs |
3 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 %s -Wno-error=non-pod-varargs |
4 | |
5 | // Check that the warning is still there under -fms-compatibility. |
6 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks %s -Wno-error=non-pod-varargs -fms-compatibility |
7 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++98 %s -Wno-error=non-pod-varargs -fms-compatibility |
8 | // RUN: %clang_cc1 -fsyntax-only -verify -fblocks -std=c++11 %s -Wno-error=non-pod-varargs -fms-compatibility |
9 | |
10 | extern char version[]; |
11 | |
12 | class C { |
13 | public: |
14 | C(int); |
15 | void g(int a, ...); |
16 | static void h(int a, ...); |
17 | }; |
18 | |
19 | void g(int a, ...); |
20 | |
21 | void t1() |
22 | { |
23 | C c(10); |
24 | |
25 | g(10, c); |
26 | #if __cplusplus <= 199711L |
27 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
28 | #endif |
29 | |
30 | g(10, version); |
31 | |
32 | void (*ptr)(int, ...) = g; |
33 | ptr(10, c); |
34 | #if __cplusplus <= 199711L |
35 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
36 | #endif |
37 | |
38 | ptr(10, version); |
39 | } |
40 | |
41 | void t2() |
42 | { |
43 | C c(10); |
44 | |
45 | c.g(10, c); |
46 | #if __cplusplus <= 199711L |
47 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
48 | #endif |
49 | |
50 | c.g(10, version); |
51 | |
52 | void (C::*ptr)(int, ...) = &C::g; |
53 | (c.*ptr)(10, c); |
54 | #if __cplusplus <= 199711L |
55 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
56 | #endif |
57 | |
58 | (c.*ptr)(10, version); |
59 | |
60 | C::h(10, c); |
61 | #if __cplusplus <= 199711L |
62 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
63 | #endif |
64 | |
65 | C::h(10, version); |
66 | |
67 | void (*static_ptr)(int, ...) = &C::h; |
68 | static_ptr(10, c); |
69 | #if __cplusplus <= 199711L |
70 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
71 | #endif |
72 | |
73 | static_ptr(10, version); |
74 | } |
75 | |
76 | int (^block)(int, ...); |
77 | |
78 | void t3() |
79 | { |
80 | C c(10); |
81 | |
82 | block(10, c); |
83 | #if __cplusplus <= 199711L |
84 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
85 | #endif |
86 | |
87 | block(10, version); |
88 | } |
89 | |
90 | class D { |
91 | public: |
92 | void operator() (int a, ...); |
93 | }; |
94 | |
95 | void t4() |
96 | { |
97 | C c(10); |
98 | |
99 | D d; |
100 | |
101 | d(10, c); |
102 | #if __cplusplus <= 199711L |
103 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
104 | #endif |
105 | |
106 | d(10, version); |
107 | } |
108 | |
109 | class E { |
110 | E(int, ...); // expected-note 2{{implicitly declared private here}} |
111 | }; |
112 | |
113 | void t5() |
114 | { |
115 | C c(10); |
116 | |
117 | E e(10, c); |
118 | #if __cplusplus <= 199711L |
119 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} |
120 | #endif |
121 | // expected-error@-4 {{calling a private constructor of class 'E'}} |
122 | (void)E(10, c); |
123 | #if __cplusplus <= 199711L |
124 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic constructor; call will abort at runtime}} |
125 | #endif |
126 | // expected-error@-4 {{calling a private constructor of class 'E'}} |
127 | |
128 | } |
129 | |
130 | // PR5761: unevaluated operands and the non-POD warning |
131 | class Foo { |
132 | public: |
133 | Foo() {} |
134 | }; |
135 | |
136 | int Helper(...); |
137 | const int size = sizeof(Helper(Foo())); |
138 | |
139 | namespace std { |
140 | class type_info { }; |
141 | } |
142 | |
143 | struct Base { virtual ~Base(); }; |
144 | Base &get_base(...); |
145 | int eat_base(...); |
146 | |
147 | void test_typeid(Base &base) { |
148 | (void)typeid(get_base(base)); |
149 | #if __cplusplus <= 199711L |
150 | // expected-warning@-2 {{cannot pass object of non-POD type 'Base' through variadic function; call will abort at runtime}} |
151 | #else |
152 | // expected-warning@-4 {{cannot pass object of non-trivial type 'Base' through variadic function; call will abort at runtime}} |
153 | #endif |
154 | // expected-warning@-6 {{expression with side effects will be evaluated despite being used as an operand to 'typeid'}} |
155 | (void)typeid(eat_base(base)); // okay |
156 | } |
157 | |
158 | |
159 | // rdar://7985267 - Shouldn't warn, doesn't actually use __builtin_va_start is |
160 | // magic. |
161 | |
162 | void t6(Foo somearg, ... ) { |
163 | __builtin_va_list list; |
164 | __builtin_va_start(list, somearg); |
165 | } |
166 | |
167 | void t7(int n, ...) { |
168 | __builtin_va_list list; |
169 | __builtin_va_start(list, n); |
170 | (void)__builtin_va_arg(list, C); // expected-warning{{second argument to 'va_arg' is of non-POD type 'C'}} |
171 | __builtin_va_end(list); |
172 | } |
173 | |
174 | struct Abstract { |
175 | virtual void doit() = 0; // expected-note{{unimplemented pure virtual method}} |
176 | }; |
177 | |
178 | void t8(int n, ...) { |
179 | __builtin_va_list list; |
180 | __builtin_va_start(list, n); |
181 | (void)__builtin_va_arg(list, Abstract); // expected-error{{second argument to 'va_arg' is of abstract type 'Abstract'}} |
182 | __builtin_va_end(list); |
183 | } |
184 | |
185 | int t9(int n) { |
186 | // Make sure the error works in potentially-evaluated sizeof |
187 | return (int)sizeof(*(Helper(Foo()), (int (*)[n])0)); |
188 | #if __cplusplus <= 199711L |
189 | // expected-warning@-2 {{cannot pass object of non-POD type 'Foo' through variadic function; call will abort at runtime}} |
190 | #endif |
191 | } |
192 | |
193 | // PR14057 |
194 | namespace t10 { |
195 | struct F { |
196 | F(); |
197 | }; |
198 | |
199 | struct S { |
200 | void operator()(F, ...); |
201 | }; |
202 | |
203 | void foo() { |
204 | S s; |
205 | F f; |
206 | s.operator()(f); |
207 | s(f); |
208 | } |
209 | } |
210 | |
211 | namespace t11 { |
212 | typedef void(*function_ptr)(int, ...); |
213 | typedef void(C::*member_ptr)(int, ...); |
214 | typedef void(^block_ptr)(int, ...); |
215 | |
216 | function_ptr get_f_ptr(); |
217 | member_ptr get_m_ptr(); |
218 | block_ptr get_b_ptr(); |
219 | |
220 | function_ptr arr_f_ptr[5]; |
221 | member_ptr arr_m_ptr[5]; |
222 | block_ptr arr_b_ptr[5]; |
223 | |
224 | void test() { |
225 | C c(10); |
226 | |
227 | (get_f_ptr())(10, c); |
228 | #if __cplusplus <= 199711L |
229 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
230 | #endif |
231 | (get_f_ptr())(10, version); |
232 | |
233 | (c.*get_m_ptr())(10, c); |
234 | #if __cplusplus <= 199711L |
235 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
236 | #endif |
237 | (c.*get_m_ptr())(10, version); |
238 | |
239 | (get_b_ptr())(10, c); |
240 | #if __cplusplus <= 199711L |
241 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
242 | #endif |
243 | |
244 | (get_b_ptr())(10, version); |
245 | |
246 | (arr_f_ptr[3])(10, c); |
247 | #if __cplusplus <= 199711L |
248 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic function; call will abort at runtime}} |
249 | #endif |
250 | |
251 | (arr_f_ptr[3])(10, version); |
252 | |
253 | (c.*arr_m_ptr[3])(10, c); |
254 | #if __cplusplus <= 199711L |
255 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic method; call will abort at runtime}} |
256 | #endif |
257 | |
258 | (c.*arr_m_ptr[3])(10, version); |
259 | |
260 | (arr_b_ptr[3])(10, c); |
261 | #if __cplusplus <= 199711L |
262 | // expected-warning@-2 {{cannot pass object of non-POD type 'C' through variadic block; call will abort at runtime}} |
263 | #endif |
264 | (arr_b_ptr[3])(10, version); |
265 | } |
266 | } |
267 | |