1 | // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wabstract-vbase-init |
2 | |
3 | #ifndef __GXX_EXPERIMENTAL_CXX0X__ |
4 | #define __CONCAT(__X, __Y) __CONCAT1(__X, __Y) |
5 | #define __CONCAT1(__X, __Y) __X ## __Y |
6 | |
7 | #define static_assert(__b, __m) \ |
8 | typedef int __CONCAT(__sa, __LINE__)[__b ? 1 : -1] |
9 | #endif |
10 | |
11 | union IncompleteUnion; |
12 | |
13 | static_assert(!__is_abstract(IncompleteUnion), "unions are never abstract"); |
14 | |
15 | class C { |
16 | virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} |
17 | }; |
18 | |
19 | static_assert(__is_abstract(C), "C has a pure virtual function"); |
20 | |
21 | class D : C { |
22 | }; |
23 | |
24 | static_assert(__is_abstract(D), "D inherits from an abstract class"); |
25 | |
26 | class E : D { |
27 | virtual void f(); |
28 | }; |
29 | |
30 | static_assert(!__is_abstract(E), "E inherits from an abstract class but implements f"); |
31 | |
32 | C *d = new C; // expected-error {{allocating an object of abstract class type 'C'}} |
33 | |
34 | C c; // expected-error {{variable type 'C' is an abstract class}} |
35 | void t1(C c); // expected-error {{parameter type 'C' is an abstract class}} |
36 | void t2(C); // expected-error {{parameter type 'C' is an abstract class}} |
37 | |
38 | struct S { |
39 | C c; // expected-error {{field type 'C' is an abstract class}} |
40 | }; |
41 | |
42 | void t3(const C&); |
43 | |
44 | void f() { |
45 | C(); // expected-error {{allocating an object of abstract class type 'C'}} |
46 | t3(C()); // expected-error {{allocating an object of abstract class type 'C'}} |
47 | } |
48 | |
49 | C e1[2]; // expected-error {{array of abstract class type 'C'}} |
50 | C (*e2)[2]; // expected-error {{array of abstract class type 'C'}} |
51 | C (**e3)[2]; // expected-error {{array of abstract class type 'C'}} |
52 | |
53 | void t4(C c[2]); // expected-error {{array of abstract class type 'C'}} |
54 | |
55 | void t5(void (*)(C)); // expected-error {{parameter type 'C' is an abstract class}} |
56 | |
57 | typedef void (*Func)(C); // expected-error {{parameter type 'C' is an abstract class}} |
58 | void t6(Func); |
59 | |
60 | class F { |
61 | F a() { while (1) {} } // expected-error {{return type 'F' is an abstract class}} |
62 | |
63 | class D { |
64 | void f(F c); // expected-error {{parameter type 'F' is an abstract class}} |
65 | }; |
66 | |
67 | union U { |
68 | void u(F c); // expected-error {{parameter type 'F' is an abstract class}} |
69 | }; |
70 | |
71 | virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} |
72 | }; |
73 | |
74 | // Diagnosing in these cases is prohibitively expensive. We still |
75 | // diagnose at the function definition, of course. |
76 | |
77 | class Abstract; |
78 | |
79 | void t7(Abstract a); |
80 | |
81 | void t8() { |
82 | void h(Abstract a); |
83 | } |
84 | |
85 | namespace N { |
86 | void h(Abstract a); |
87 | } |
88 | |
89 | class Abstract { |
90 | virtual void f() = 0; |
91 | }; |
92 | |
93 | // <rdar://problem/6854087> |
94 | class foo { |
95 | public: |
96 | virtual foo *getFoo() = 0; |
97 | }; |
98 | |
99 | class bar : public foo { |
100 | public: |
101 | virtual bar *getFoo(); |
102 | }; |
103 | |
104 | bar x; |
105 | |
106 | // <rdar://problem/6902298> |
107 | class A { |
108 | public: |
109 | virtual void release() = 0; |
110 | virtual void release(int count) = 0; |
111 | virtual void retain() = 0; |
112 | }; |
113 | |
114 | class B : public A { |
115 | public: |
116 | virtual void release(); |
117 | virtual void release(int count); |
118 | virtual void retain(); |
119 | }; |
120 | |
121 | void foo(void) { |
122 | B b; |
123 | } |
124 | |
125 | struct K { |
126 | int f; |
127 | virtual ~K(); |
128 | }; |
129 | |
130 | struct L : public K { |
131 | void f(); |
132 | }; |
133 | |
134 | // PR5222 |
135 | namespace PR5222 { |
136 | struct A { |
137 | virtual A *clone() = 0; |
138 | }; |
139 | struct B : public A { |
140 | virtual B *clone() = 0; |
141 | }; |
142 | struct C : public B { |
143 | virtual C *clone(); |
144 | }; |
145 | |
146 | C c; |
147 | } |
148 | |
149 | // PR5550 - instantiating template didn't track overridden methods |
150 | namespace PR5550 { |
151 | struct A { |
152 | virtual void a() = 0; |
153 | virtual void b() = 0; |
154 | }; |
155 | template<typename T> struct B : public A { |
156 | virtual void b(); |
157 | virtual void c() = 0; |
158 | }; |
159 | struct C : public B<int> { |
160 | virtual void a(); |
161 | virtual void c(); |
162 | }; |
163 | C x; |
164 | } |
165 | |
166 | namespace PureImplicit { |
167 | // A pure virtual destructor should be implicitly overridden. |
168 | struct A { virtual ~A() = 0; }; |
169 | struct B : A {}; |
170 | B x; |
171 | |
172 | // A pure virtual assignment operator should be implicitly overridden. |
173 | struct D; |
174 | struct C { virtual D& operator=(const D&) = 0; }; |
175 | struct D : C {}; |
176 | D y; |
177 | } |
178 | |
179 | namespace test1 { |
180 | struct A { |
181 | virtual void foo() = 0; |
182 | }; |
183 | |
184 | struct B : A { |
185 | using A::foo; |
186 | }; |
187 | |
188 | struct C : B { |
189 | void foo(); |
190 | }; |
191 | |
192 | void test() { |
193 | C c; |
194 | } |
195 | } |
196 | |
197 | // rdar://problem/8302168 |
198 | namespace test2 { |
199 | struct X1 { |
200 | virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} |
201 | void g(X1 parm7); // expected-error {{parameter type 'test2::X1' is an abstract class}} |
202 | void g(X1 parm8[2]); // expected-error {{array of abstract class type 'test2::X1'}} |
203 | }; |
204 | |
205 | template <int N> |
206 | struct X2 { |
207 | virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} |
208 | void g(X2 parm10); // expected-error {{parameter type 'X2<N>' is an abstract class}} |
209 | void g(X2 parm11[2]); // expected-error {{array of abstract class type 'X2<N>'}} |
210 | }; |
211 | } |
212 | |
213 | namespace test3 { |
214 | struct A { // expected-note {{not complete until}} |
215 | A x; // expected-error {{field has incomplete type}} |
216 | virtual void abstract() = 0; |
217 | }; |
218 | |
219 | struct B { // expected-note {{not complete until}} |
220 | virtual void abstract() = 0; |
221 | B x; // expected-error {{field has incomplete type}} |
222 | }; |
223 | |
224 | struct C { |
225 | static C x; // expected-error {{abstract class}} |
226 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
227 | }; |
228 | |
229 | struct D { |
230 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
231 | static D x; // expected-error {{abstract class}} |
232 | }; |
233 | } |
234 | |
235 | namespace test4 { |
236 | template <class T> struct A { |
237 | A x; // expected-error {{abstract class}} |
238 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
239 | }; |
240 | |
241 | template <class T> struct B { |
242 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
243 | B x; // expected-error {{abstract class}} |
244 | }; |
245 | |
246 | template <class T> struct C { |
247 | static C x; // expected-error {{abstract class}} |
248 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
249 | }; |
250 | |
251 | template <class T> struct D { |
252 | virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} |
253 | static D x; // expected-error {{abstract class}} |
254 | }; |
255 | } |
256 | |
257 | namespace test5 { |
258 | struct A { A(int); virtual ~A() = 0; }; // expected-note {{pure virtual method}} |
259 | const A &a = 0; // expected-error {{abstract class}} |
260 | void f(const A &a = 0); // expected-error {{abstract class}} |
261 | void g() { f(0); } // expected-error {{abstract class}} |
262 | } |
263 | |
264 | // PR9247: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification |
265 | namespace pr9247 { |
266 | struct A { |
267 | virtual void g(const A& input) = 0; |
268 | struct B { |
269 | C* f(int foo); |
270 | }; |
271 | }; |
272 | } |
273 | |
274 | namespace pr12658 { |
275 | class C { |
276 | public: |
277 | C(int v){} |
278 | virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} |
279 | }; |
280 | |
281 | void foo( C& c ) {} |
282 | |
283 | void bar( void ) { |
284 | foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} |
285 | } |
286 | } |
287 | |
288 | namespace pr16659 { |
289 | struct A { |
290 | A(int); |
291 | virtual void x() = 0; // expected-note {{unimplemented pure virtual method 'x' in 'RedundantInit'}} |
292 | }; |
293 | struct B : virtual A {}; |
294 | struct C : B { |
295 | C() : A(37) {} |
296 | void x() override {} |
297 | }; |
298 | |
299 | struct X { |
300 | friend class Z; |
301 | private: |
302 | X &operator=(const X&); |
303 | }; |
304 | struct Y : virtual X { // expected-note {{::X' has an inaccessible copy assignment}} |
305 | virtual ~Y() = 0; |
306 | }; |
307 | struct Z : Y {}; // expected-note {{::Y' has a deleted copy assignment}} |
308 | void f(Z &a, const Z &b) { a = b; } // expected-error {{copy assignment operator is implicitly deleted}} |
309 | |
310 | struct RedundantInit : virtual A { |
311 | RedundantInit() : A(0) {} // expected-warning {{initializer for virtual base class 'pr16659::A' of abstract class 'RedundantInit' will never be used}} |
312 | }; |
313 | } |
314 | |