forked from OSchip/llvm-project
315 lines
7.5 KiB
C++
315 lines
7.5 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wabstract-vbase-init
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#ifndef __GXX_EXPERIMENTAL_CXX0X__
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#define __CONCAT(__X, __Y) __CONCAT1(__X, __Y)
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#define __CONCAT1(__X, __Y) __X ## __Y
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#define static_assert(__b, __m) \
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typedef int __CONCAT(__sa, __LINE__)[__b ? 1 : -1]
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#endif
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union IncompleteUnion;
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static_assert(!__is_abstract(IncompleteUnion), "unions are never abstract");
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class C {
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virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}}
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};
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static_assert(__is_abstract(C), "C has a pure virtual function");
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class D : C {
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};
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static_assert(__is_abstract(D), "D inherits from an abstract class");
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class E : D {
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virtual void f();
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};
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static_assert(!__is_abstract(E), "E inherits from an abstract class but implements f");
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C *d = new C; // expected-error {{allocating an object of abstract class type 'C'}}
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C c; // expected-error {{variable type 'C' is an abstract class}}
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void t1(C c); // expected-error {{parameter type 'C' is an abstract class}}
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void t2(C); // expected-error {{parameter type 'C' is an abstract class}}
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struct S {
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C c; // expected-error {{field type 'C' is an abstract class}}
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};
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void t3(const C&);
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void f() {
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C(); // expected-error {{allocating an object of abstract class type 'C'}}
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t3(C()); // expected-error {{allocating an object of abstract class type 'C'}}
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}
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C e1[2]; // expected-error {{array of abstract class type 'C'}}
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C (*e2)[2]; // expected-error {{array of abstract class type 'C'}}
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C (**e3)[2]; // expected-error {{array of abstract class type 'C'}}
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void t4(C c[2]); // expected-error {{array of abstract class type 'C'}}
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void t5(void (*)(C)); // expected-error {{parameter type 'C' is an abstract class}}
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typedef void (*Func)(C); // expected-error {{parameter type 'C' is an abstract class}}
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void t6(Func);
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class F {
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F a() { while (1) {} } // expected-error {{return type 'F' is an abstract class}}
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class D {
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void f(F c); // expected-error {{parameter type 'F' is an abstract class}}
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};
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union U {
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void u(F c); // expected-error {{parameter type 'F' is an abstract class}}
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};
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virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}}
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};
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// Diagnosing in these cases is prohibitively expensive. We still
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// diagnose at the function definition, of course.
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class Abstract;
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void t7(Abstract a);
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void t8() {
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void h(Abstract a);
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}
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namespace N {
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void h(Abstract a);
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}
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class Abstract {
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virtual void f() = 0;
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};
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// <rdar://problem/6854087>
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class foo {
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public:
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virtual foo *getFoo() = 0;
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};
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class bar : public foo {
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public:
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virtual bar *getFoo();
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};
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bar x;
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// <rdar://problem/6902298>
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class A {
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public:
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virtual void release() = 0;
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virtual void release(int count) = 0;
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virtual void retain() = 0;
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};
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class B : public A {
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public:
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virtual void release();
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virtual void release(int count);
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virtual void retain();
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};
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void foo(void) {
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B b;
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}
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struct K {
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int f;
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virtual ~K();
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};
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struct L : public K {
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void f();
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};
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// PR5222
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namespace PR5222 {
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struct A {
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virtual A *clone() = 0;
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};
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struct B : public A {
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virtual B *clone() = 0;
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};
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struct C : public B {
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virtual C *clone();
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};
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C c;
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}
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// PR5550 - instantiating template didn't track overridden methods
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namespace PR5550 {
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struct A {
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virtual void a() = 0;
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virtual void b() = 0;
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};
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template<typename T> struct B : public A {
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virtual void b();
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virtual void c() = 0;
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};
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struct C : public B<int> {
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virtual void a();
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virtual void c();
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};
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C x;
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}
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namespace PureImplicit {
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// A pure virtual destructor should be implicitly overridden.
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struct A { virtual ~A() = 0; };
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struct B : A {};
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B x;
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// A pure virtual assignment operator should be implicitly overridden.
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struct D;
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struct C { virtual D& operator=(const D&) = 0; };
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struct D : C {};
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D y;
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}
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namespace test1 {
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struct A {
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virtual void foo() = 0;
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};
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struct B : A {
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using A::foo;
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};
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struct C : B {
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void foo();
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};
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void test() {
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C c;
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}
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}
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// rdar://problem/8302168
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namespace test2 {
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struct X1 {
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virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}}
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void g(X1 parm7); // expected-error {{parameter type 'test2::X1' is an abstract class}}
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void g(X1 parm8[2]); // expected-error {{array of abstract class type 'test2::X1'}}
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};
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template <int N>
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struct X2 {
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virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}}
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void g(X2 parm10); // expected-error {{parameter type 'X2<N>' is an abstract class}}
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void g(X2 parm11[2]); // expected-error {{array of abstract class type 'X2<N>'}}
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};
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}
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namespace test3 {
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struct A { // expected-note {{not complete until}}
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A x; // expected-error {{field has incomplete type}}
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virtual void abstract() = 0;
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};
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struct B { // expected-note {{not complete until}}
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virtual void abstract() = 0;
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B x; // expected-error {{field has incomplete type}}
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};
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struct C {
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static C x; // expected-error {{abstract class}}
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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};
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struct D {
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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static D x; // expected-error {{abstract class}}
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};
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}
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namespace test4 {
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template <class T> struct A {
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A x; // expected-error {{abstract class}}
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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};
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template <class T> struct B {
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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B x; // expected-error {{abstract class}}
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};
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template <class T> struct C {
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static C x; // expected-error {{abstract class}}
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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};
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template <class T> struct D {
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virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}}
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static D x; // expected-error {{abstract class}}
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};
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}
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namespace test5 {
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struct A { A(int); virtual ~A() = 0; }; // expected-note {{pure virtual method}}
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const A &a = 0; // expected-error {{abstract class}}
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void f(const A &a = 0); // expected-error {{abstract class}}
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void g(const A &a);
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void h() { g(0); } // expected-error {{abstract class}}
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}
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// PR9247: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification
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namespace pr9247 {
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struct A {
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virtual void g(const A& input) = 0;
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struct B {
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C* f(int foo);
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};
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};
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}
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namespace pr12658 {
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class C {
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public:
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C(int v){}
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virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}}
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};
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void foo( C& c ) {}
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void bar( void ) {
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foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}}
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}
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}
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namespace pr16659 {
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struct A {
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A(int);
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virtual void x() = 0; // expected-note {{unimplemented pure virtual method 'x' in 'RedundantInit'}}
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};
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struct B : virtual A {};
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struct C : B {
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C() : A(37) {}
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void x() override {}
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};
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struct X {
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friend class Z;
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private:
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X &operator=(const X&);
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};
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struct Y : virtual X { // expected-note {{::X' has an inaccessible copy assignment}}
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virtual ~Y() = 0;
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};
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struct Z : Y {}; // expected-note {{::Y' has a deleted copy assignment}}
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void f(Z &a, const Z &b) { a = b; } // expected-error {{copy assignment operator is implicitly deleted}}
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struct RedundantInit : virtual A {
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RedundantInit() : A(0) {} // expected-warning {{initializer for virtual base class 'pr16659::A' of abstract class 'RedundantInit' will never be used}}
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};
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}
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