head 1.1; branch 1.1.1; access; symbols netbsd-11-0-RC6:1.1.1.4 netbsd-11-0-RC5:1.1.1.4 netbsd-11-0-RC4:1.1.1.4 netbsd-11-0-RC3:1.1.1.4 netbsd-11-0-RC2:1.1.1.4 netbsd-11-0-RC1:1.1.1.4 perseant-exfatfs-base-20250801:1.1.1.4 netbsd-11:1.1.1.4.0.10 netbsd-11-base:1.1.1.4 netbsd-10-1-RELEASE:1.1.1.4 perseant-exfatfs-base-20240630:1.1.1.4 perseant-exfatfs:1.1.1.4.0.8 perseant-exfatfs-base:1.1.1.4 netbsd-8-3-RELEASE:1.1.1.3 netbsd-9-4-RELEASE:1.1.1.3 netbsd-10-0-RELEASE:1.1.1.4 netbsd-10-0-RC6:1.1.1.4 netbsd-10-0-RC5:1.1.1.4 netbsd-10-0-RC4:1.1.1.4 netbsd-10-0-RC3:1.1.1.4 netbsd-10-0-RC2:1.1.1.4 netbsd-10-0-RC1:1.1.1.4 netbsd-10:1.1.1.4.0.6 netbsd-10-base:1.1.1.4 netbsd-9-3-RELEASE:1.1.1.3 cjep_sun2x:1.1.1.4.0.4 cjep_sun2x-base:1.1.1.4 cjep_staticlib_x-base1:1.1.1.4 netbsd-9-2-RELEASE:1.1.1.3 cjep_staticlib_x:1.1.1.4.0.2 cjep_staticlib_x-base:1.1.1.4 netbsd-9-1-RELEASE:1.1.1.3 phil-wifi-20200421:1.1.1.4 phil-wifi-20200411:1.1.1.4 phil-wifi-20200406:1.1.1.4 netbsd-8-2-RELEASE:1.1.1.3 netbsd-9-0-RELEASE:1.1.1.3 netbsd-9-0-RC2:1.1.1.3 netbsd-9-0-RC1:1.1.1.3 netbsd-9:1.1.1.3.0.18 netbsd-9-base:1.1.1.3 phil-wifi-20190609:1.1.1.3 netbsd-8-1-RELEASE:1.1.1.3 netbsd-8-1-RC1:1.1.1.3 pgoyette-compat-merge-20190127:1.1.1.3 pgoyette-compat-20190127:1.1.1.3 pgoyette-compat-20190118:1.1.1.3 pgoyette-compat-1226:1.1.1.3 pgoyette-compat-1126:1.1.1.3 pgoyette-compat-1020:1.1.1.3 pgoyette-compat-0930:1.1.1.3 pgoyette-compat-0906:1.1.1.3 netbsd-7-2-RELEASE:1.1.1.2 pgoyette-compat-0728:1.1.1.3 clang-337282:1.1.1.3 netbsd-8-0-RELEASE:1.1.1.3 phil-wifi:1.1.1.3.0.16 phil-wifi-base:1.1.1.3 pgoyette-compat-0625:1.1.1.3 netbsd-8-0-RC2:1.1.1.3 pgoyette-compat-0521:1.1.1.3 pgoyette-compat-0502:1.1.1.3 pgoyette-compat-0422:1.1.1.3 netbsd-8-0-RC1:1.1.1.3 pgoyette-compat-0415:1.1.1.3 pgoyette-compat-0407:1.1.1.3 pgoyette-compat-0330:1.1.1.3 pgoyette-compat-0322:1.1.1.3 pgoyette-compat-0315:1.1.1.3 netbsd-7-1-2-RELEASE:1.1.1.2 pgoyette-compat:1.1.1.3.0.14 pgoyette-compat-base:1.1.1.3 netbsd-7-1-1-RELEASE:1.1.1.2 clang-319952:1.1.1.3 matt-nb8-mediatek:1.1.1.3.0.12 matt-nb8-mediatek-base:1.1.1.3 clang-309604:1.1.1.3 perseant-stdc-iso10646:1.1.1.3.0.10 perseant-stdc-iso10646-base:1.1.1.3 netbsd-8:1.1.1.3.0.8 netbsd-8-base:1.1.1.3 prg-localcount2-base3:1.1.1.3 prg-localcount2-base2:1.1.1.3 prg-localcount2-base1:1.1.1.3 prg-localcount2:1.1.1.3.0.6 prg-localcount2-base:1.1.1.3 pgoyette-localcount-20170426:1.1.1.3 bouyer-socketcan-base1:1.1.1.3 pgoyette-localcount-20170320:1.1.1.3 netbsd-7-1:1.1.1.2.0.10 netbsd-7-1-RELEASE:1.1.1.2 netbsd-7-1-RC2:1.1.1.2 clang-294123:1.1.1.3 netbsd-7-nhusb-base-20170116:1.1.1.2 bouyer-socketcan:1.1.1.3.0.4 bouyer-socketcan-base:1.1.1.3 clang-291444:1.1.1.3 pgoyette-localcount-20170107:1.1.1.3 netbsd-7-1-RC1:1.1.1.2 pgoyette-localcount-20161104:1.1.1.3 netbsd-7-0-2-RELEASE:1.1.1.2 localcount-20160914:1.1.1.3 netbsd-7-nhusb:1.1.1.2.0.8 netbsd-7-nhusb-base:1.1.1.2 clang-280599:1.1.1.3 pgoyette-localcount-20160806:1.1.1.3 pgoyette-localcount-20160726:1.1.1.3 pgoyette-localcount:1.1.1.3.0.2 pgoyette-localcount-base:1.1.1.3 netbsd-7-0-1-RELEASE:1.1.1.2 clang-261930:1.1.1.3 netbsd-7-0:1.1.1.2.0.6 netbsd-7-0-RELEASE:1.1.1.2 netbsd-7-0-RC3:1.1.1.2 netbsd-7-0-RC2:1.1.1.2 netbsd-7-0-RC1:1.1.1.2 clang-237755:1.1.1.2 clang-232565:1.1.1.2 clang-227398:1.1.1.2 tls-maxphys-base:1.1.1.2 tls-maxphys:1.1.1.2.0.4 netbsd-7:1.1.1.2.0.2 netbsd-7-base:1.1.1.2 clang-215315:1.1.1.2 clang-209886:1.1.1.2 yamt-pagecache:1.1.1.1.0.4 yamt-pagecache-base9:1.1.1.1 tls-earlyentropy:1.1.1.1.0.2 tls-earlyentropy-base:1.1.1.2 riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.1 riastradh-drm2-base3:1.1.1.1 clang-202566:1.1.1.1 clang-201163:1.1.1.1 clang-199312:1.1.1.1 clang-198450:1.1.1.1 clang-196603:1.1.1.1 clang-195771:1.1.1.1 LLVM:1.1.1; locks; strict; comment @// @; 1.1 date 2013.11.28.14.14.56; author joerg; state Exp; branches 1.1.1.1; next ; commitid ow8OybrawrB1f3fx; 1.1.1.1 date 2013.11.28.14.14.56; author joerg; state Exp; branches 1.1.1.1.2.1 1.1.1.1.4.1; next 1.1.1.2; commitid ow8OybrawrB1f3fx; 1.1.1.2 date 2014.05.30.18.14.49; author joerg; state Exp; branches 1.1.1.2.4.1; next 1.1.1.3; commitid 8q0kdlBlCn09GACx; 1.1.1.3 date 2016.02.27.22.10.13; author joerg; state Exp; branches 1.1.1.3.16.1; next 1.1.1.4; commitid tIimz3oDlh1NpBWy; 1.1.1.4 date 2019.11.13.22.22.53; author joerg; state dead; branches; next ; commitid QD8YATxuNG34YJKB; 1.1.1.1.2.1 date 2014.08.10.07.08.23; author tls; state Exp; branches; next ; commitid t01A1TLTYxkpGMLx; 1.1.1.1.4.1 date 2013.11.28.14.14.56; author yamt; state dead; branches; next 1.1.1.1.4.2; commitid WSrDtL5nYAUyiyBx; 1.1.1.1.4.2 date 2014.05.22.16.19.39; author yamt; state Exp; branches; next ; commitid WSrDtL5nYAUyiyBx; 1.1.1.2.4.1 date 2014.05.30.18.14.49; author tls; state dead; branches; next 1.1.1.2.4.2; commitid jTnpym9Qu0o4R1Nx; 1.1.1.2.4.2 date 2014.08.19.23.49.17; author tls; state Exp; branches; next ; commitid jTnpym9Qu0o4R1Nx; 1.1.1.3.16.1 date 2020.04.13.07.50.22; author martin; state dead; branches; next ; commitid X01YhRUPVUDaec4C; desc @@ 1.1 log @Initial revision @ text @// RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wabstract-vbase-init #ifndef __GXX_EXPERIMENTAL_CXX0X__ #define __CONCAT(__X, __Y) __CONCAT1(__X, __Y) #define __CONCAT1(__X, __Y) __X ## __Y #define static_assert(__b, __m) \ typedef int __CONCAT(__sa, __LINE__)[__b ? 1 : -1] #endif class C { virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; static_assert(__is_abstract(C), "C has a pure virtual function"); class D : C { }; static_assert(__is_abstract(D), "D inherits from an abstract class"); class E : D { virtual void f(); }; static_assert(!__is_abstract(E), "E inherits from an abstract class but implements f"); C *d = new C; // expected-error {{allocating an object of abstract class type 'C'}} C c; // expected-error {{variable type 'C' is an abstract class}} void t1(C c); // expected-error {{parameter type 'C' is an abstract class}} void t2(C); // expected-error {{parameter type 'C' is an abstract class}} struct S { C c; // expected-error {{field type 'C' is an abstract class}} }; void t3(const C&); void f() { C(); // expected-error {{allocating an object of abstract class type 'C'}} t3(C()); // expected-error {{allocating an object of abstract class type 'C'}} } C e1[2]; // expected-error {{array of abstract class type 'C'}} C (*e2)[2]; // expected-error {{array of abstract class type 'C'}} C (**e3)[2]; // expected-error {{array of abstract class type 'C'}} void t4(C c[2]); // expected-error {{array of abstract class type 'C'}} void t5(void (*)(C)); // expected-error {{parameter type 'C' is an abstract class}} typedef void (*Func)(C); // expected-error {{parameter type 'C' is an abstract class}} void t6(Func); class F { F a() { while (1) {} } // expected-error {{return type 'F' is an abstract class}} class D { void f(F c); // expected-error {{parameter type 'F' is an abstract class}} }; union U { void u(F c); // expected-error {{parameter type 'F' is an abstract class}} }; virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; // Diagnosing in these cases is prohibitively expensive. We still // diagnose at the function definition, of course. class Abstract; void t7(Abstract a); void t8() { void h(Abstract a); } namespace N { void h(Abstract a); } class Abstract { virtual void f() = 0; }; // class foo { public: virtual foo *getFoo() = 0; }; class bar : public foo { public: virtual bar *getFoo(); }; bar x; // class A { public: virtual void release() = 0; virtual void release(int count) = 0; virtual void retain() = 0; }; class B : public A { public: virtual void release(); virtual void release(int count); virtual void retain(); }; void foo(void) { B b; } struct K { int f; virtual ~K(); }; struct L : public K { void f(); }; // PR5222 namespace PR5222 { struct A { virtual A *clone() = 0; }; struct B : public A { virtual B *clone() = 0; }; struct C : public B { virtual C *clone(); }; C c; } // PR5550 - instantiating template didn't track overridden methods namespace PR5550 { struct A { virtual void a() = 0; virtual void b() = 0; }; template struct B : public A { virtual void b(); virtual void c() = 0; }; struct C : public B { virtual void a(); virtual void c(); }; C x; } namespace PureImplicit { // A pure virtual destructor should be implicitly overridden. struct A { virtual ~A() = 0; }; struct B : A {}; B x; // A pure virtual assignment operator should be implicitly overridden. struct D; struct C { virtual D& operator=(const D&) = 0; }; struct D : C {}; D y; } namespace test1 { struct A { virtual void foo() = 0; }; struct B : A { using A::foo; }; struct C : B { void foo(); }; void test() { C c; } } // rdar://problem/8302168 namespace test2 { struct X1 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X1 parm7); // expected-error {{parameter type 'test2::X1' is an abstract class}} void g(X1 parm8[2]); // expected-error {{array of abstract class type 'test2::X1'}} }; template struct X2 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X2 parm10); // expected-error {{parameter type 'X2' is an abstract class}} void g(X2 parm11[2]); // expected-error {{array of abstract class type 'X2'}} }; } namespace test3 { struct A { // expected-note {{not complete until}} A x; // expected-error {{field has incomplete type}} virtual void abstract() = 0; }; struct B { // expected-note {{not complete until}} virtual void abstract() = 0; B x; // expected-error {{field has incomplete type}} }; struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test4 { template struct A { A x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct B { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} B x; // expected-error {{abstract class}} }; template struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test5 { struct A { A(int); virtual ~A() = 0; }; // expected-note {{pure virtual method}} const A &a = 0; // expected-error {{abstract class}} void f(const A &a = 0); // expected-error {{abstract class}} void g() { f(0); } // expected-error {{abstract class}} } // PR9247: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification namespace pr9247 { struct A { virtual void g(const A& input) = 0; struct B { C* f(int foo); }; }; } namespace pr12658 { class C { public: C(int v){} virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} }; void foo( C& c ) {} void bar( void ) { foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} } } namespace pr16659 { struct A { A(int); virtual void x() = 0; // expected-note {{unimplemented pure virtual method 'x' in 'RedundantInit'}} }; struct B : virtual A {}; struct C : B { C() : A(37) {} void x() override {} }; struct X { friend class Z; private: X &operator=(const X&); }; struct Y : virtual X { // expected-note {{::X' has an inaccessible copy assignment}} virtual ~Y() = 0; }; struct Z : Y {}; // expected-note {{::Y' has a deleted copy assignment}} void f(Z &a, const Z &b) { a = b; } // expected-error {{copy assignment operator is implicitly deleted}} struct RedundantInit : virtual A { RedundantInit() : A(0) {} // expected-warning {{initializer for virtual base class 'pr16659::A' of abstract class 'RedundantInit' will never be used}} }; } @ 1.1.1.1 log @Import Clang 3.4rc1 r195771. @ text @@ 1.1.1.1.2.1 log @Rebase. @ text @d271 10 a280 10 class C { public: C(int v){} virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} }; void foo( C& c ) {} void bar( void ) { foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} @ 1.1.1.2 log @Import Clang 3.5svn r209886. @ text @d271 10 a280 10 class C { public: C(int v){} virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} }; void foo( C& c ) {} void bar( void ) { foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} @ 1.1.1.3 log @Import Clang 3.8.0rc3 r261930. @ text @a10 4 union IncompleteUnion; static_assert(!__is_abstract(IncompleteUnion), "unions are never abstract"); @ 1.1.1.3.16.1 log @Mostly merge changes from HEAD upto 20200411 @ text @@ 1.1.1.4 log @Mark old LLVM instance as dead. @ text @@ 1.1.1.2.4.1 log @file abstract.cpp was added on branch tls-maxphys on 2014-08-19 23:49:17 +0000 @ text @d1 309 @ 1.1.1.2.4.2 log @Rebase to HEAD as of a few days ago. @ text @a0 309 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wabstract-vbase-init #ifndef __GXX_EXPERIMENTAL_CXX0X__ #define __CONCAT(__X, __Y) __CONCAT1(__X, __Y) #define __CONCAT1(__X, __Y) __X ## __Y #define static_assert(__b, __m) \ typedef int __CONCAT(__sa, __LINE__)[__b ? 1 : -1] #endif class C { virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; static_assert(__is_abstract(C), "C has a pure virtual function"); class D : C { }; static_assert(__is_abstract(D), "D inherits from an abstract class"); class E : D { virtual void f(); }; static_assert(!__is_abstract(E), "E inherits from an abstract class but implements f"); C *d = new C; // expected-error {{allocating an object of abstract class type 'C'}} C c; // expected-error {{variable type 'C' is an abstract class}} void t1(C c); // expected-error {{parameter type 'C' is an abstract class}} void t2(C); // expected-error {{parameter type 'C' is an abstract class}} struct S { C c; // expected-error {{field type 'C' is an abstract class}} }; void t3(const C&); void f() { C(); // expected-error {{allocating an object of abstract class type 'C'}} t3(C()); // expected-error {{allocating an object of abstract class type 'C'}} } C e1[2]; // expected-error {{array of abstract class type 'C'}} C (*e2)[2]; // expected-error {{array of abstract class type 'C'}} C (**e3)[2]; // expected-error {{array of abstract class type 'C'}} void t4(C c[2]); // expected-error {{array of abstract class type 'C'}} void t5(void (*)(C)); // expected-error {{parameter type 'C' is an abstract class}} typedef void (*Func)(C); // expected-error {{parameter type 'C' is an abstract class}} void t6(Func); class F { F a() { while (1) {} } // expected-error {{return type 'F' is an abstract class}} class D { void f(F c); // expected-error {{parameter type 'F' is an abstract class}} }; union U { void u(F c); // expected-error {{parameter type 'F' is an abstract class}} }; virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; // Diagnosing in these cases is prohibitively expensive. We still // diagnose at the function definition, of course. class Abstract; void t7(Abstract a); void t8() { void h(Abstract a); } namespace N { void h(Abstract a); } class Abstract { virtual void f() = 0; }; // class foo { public: virtual foo *getFoo() = 0; }; class bar : public foo { public: virtual bar *getFoo(); }; bar x; // class A { public: virtual void release() = 0; virtual void release(int count) = 0; virtual void retain() = 0; }; class B : public A { public: virtual void release(); virtual void release(int count); virtual void retain(); }; void foo(void) { B b; } struct K { int f; virtual ~K(); }; struct L : public K { void f(); }; // PR5222 namespace PR5222 { struct A { virtual A *clone() = 0; }; struct B : public A { virtual B *clone() = 0; }; struct C : public B { virtual C *clone(); }; C c; } // PR5550 - instantiating template didn't track overridden methods namespace PR5550 { struct A { virtual void a() = 0; virtual void b() = 0; }; template struct B : public A { virtual void b(); virtual void c() = 0; }; struct C : public B { virtual void a(); virtual void c(); }; C x; } namespace PureImplicit { // A pure virtual destructor should be implicitly overridden. struct A { virtual ~A() = 0; }; struct B : A {}; B x; // A pure virtual assignment operator should be implicitly overridden. struct D; struct C { virtual D& operator=(const D&) = 0; }; struct D : C {}; D y; } namespace test1 { struct A { virtual void foo() = 0; }; struct B : A { using A::foo; }; struct C : B { void foo(); }; void test() { C c; } } // rdar://problem/8302168 namespace test2 { struct X1 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X1 parm7); // expected-error {{parameter type 'test2::X1' is an abstract class}} void g(X1 parm8[2]); // expected-error {{array of abstract class type 'test2::X1'}} }; template struct X2 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X2 parm10); // expected-error {{parameter type 'X2' is an abstract class}} void g(X2 parm11[2]); // expected-error {{array of abstract class type 'X2'}} }; } namespace test3 { struct A { // expected-note {{not complete until}} A x; // expected-error {{field has incomplete type}} virtual void abstract() = 0; }; struct B { // expected-note {{not complete until}} virtual void abstract() = 0; B x; // expected-error {{field has incomplete type}} }; struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test4 { template struct A { A x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct B { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} B x; // expected-error {{abstract class}} }; template struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test5 { struct A { A(int); virtual ~A() = 0; }; // expected-note {{pure virtual method}} const A &a = 0; // expected-error {{abstract class}} void f(const A &a = 0); // expected-error {{abstract class}} void g() { f(0); } // expected-error {{abstract class}} } // PR9247: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification namespace pr9247 { struct A { virtual void g(const A& input) = 0; struct B { C* f(int foo); }; }; } namespace pr12658 { class C { public: C(int v){} virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} }; void foo( C& c ) {} void bar( void ) { foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} } } namespace pr16659 { struct A { A(int); virtual void x() = 0; // expected-note {{unimplemented pure virtual method 'x' in 'RedundantInit'}} }; struct B : virtual A {}; struct C : B { C() : A(37) {} void x() override {} }; struct X { friend class Z; private: X &operator=(const X&); }; struct Y : virtual X { // expected-note {{::X' has an inaccessible copy assignment}} virtual ~Y() = 0; }; struct Z : Y {}; // expected-note {{::Y' has a deleted copy assignment}} void f(Z &a, const Z &b) { a = b; } // expected-error {{copy assignment operator is implicitly deleted}} struct RedundantInit : virtual A { RedundantInit() : A(0) {} // expected-warning {{initializer for virtual base class 'pr16659::A' of abstract class 'RedundantInit' will never be used}} }; } @ 1.1.1.1.4.1 log @file abstract.cpp was added on branch yamt-pagecache on 2014-05-22 16:19:39 +0000 @ text @d1 309 @ 1.1.1.1.4.2 log @sync with head. for a reference, the tree before this commit was tagged as yamt-pagecache-tag8. this commit was splitted into small chunks to avoid a limitation of cvs. ("Protocol error: too many arguments") @ text @a0 309 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wabstract-vbase-init #ifndef __GXX_EXPERIMENTAL_CXX0X__ #define __CONCAT(__X, __Y) __CONCAT1(__X, __Y) #define __CONCAT1(__X, __Y) __X ## __Y #define static_assert(__b, __m) \ typedef int __CONCAT(__sa, __LINE__)[__b ? 1 : -1] #endif class C { virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; static_assert(__is_abstract(C), "C has a pure virtual function"); class D : C { }; static_assert(__is_abstract(D), "D inherits from an abstract class"); class E : D { virtual void f(); }; static_assert(!__is_abstract(E), "E inherits from an abstract class but implements f"); C *d = new C; // expected-error {{allocating an object of abstract class type 'C'}} C c; // expected-error {{variable type 'C' is an abstract class}} void t1(C c); // expected-error {{parameter type 'C' is an abstract class}} void t2(C); // expected-error {{parameter type 'C' is an abstract class}} struct S { C c; // expected-error {{field type 'C' is an abstract class}} }; void t3(const C&); void f() { C(); // expected-error {{allocating an object of abstract class type 'C'}} t3(C()); // expected-error {{allocating an object of abstract class type 'C'}} } C e1[2]; // expected-error {{array of abstract class type 'C'}} C (*e2)[2]; // expected-error {{array of abstract class type 'C'}} C (**e3)[2]; // expected-error {{array of abstract class type 'C'}} void t4(C c[2]); // expected-error {{array of abstract class type 'C'}} void t5(void (*)(C)); // expected-error {{parameter type 'C' is an abstract class}} typedef void (*Func)(C); // expected-error {{parameter type 'C' is an abstract class}} void t6(Func); class F { F a() { while (1) {} } // expected-error {{return type 'F' is an abstract class}} class D { void f(F c); // expected-error {{parameter type 'F' is an abstract class}} }; union U { void u(F c); // expected-error {{parameter type 'F' is an abstract class}} }; virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f'}} }; // Diagnosing in these cases is prohibitively expensive. We still // diagnose at the function definition, of course. class Abstract; void t7(Abstract a); void t8() { void h(Abstract a); } namespace N { void h(Abstract a); } class Abstract { virtual void f() = 0; }; // class foo { public: virtual foo *getFoo() = 0; }; class bar : public foo { public: virtual bar *getFoo(); }; bar x; // class A { public: virtual void release() = 0; virtual void release(int count) = 0; virtual void retain() = 0; }; class B : public A { public: virtual void release(); virtual void release(int count); virtual void retain(); }; void foo(void) { B b; } struct K { int f; virtual ~K(); }; struct L : public K { void f(); }; // PR5222 namespace PR5222 { struct A { virtual A *clone() = 0; }; struct B : public A { virtual B *clone() = 0; }; struct C : public B { virtual C *clone(); }; C c; } // PR5550 - instantiating template didn't track overridden methods namespace PR5550 { struct A { virtual void a() = 0; virtual void b() = 0; }; template struct B : public A { virtual void b(); virtual void c() = 0; }; struct C : public B { virtual void a(); virtual void c(); }; C x; } namespace PureImplicit { // A pure virtual destructor should be implicitly overridden. struct A { virtual ~A() = 0; }; struct B : A {}; B x; // A pure virtual assignment operator should be implicitly overridden. struct D; struct C { virtual D& operator=(const D&) = 0; }; struct D : C {}; D y; } namespace test1 { struct A { virtual void foo() = 0; }; struct B : A { using A::foo; }; struct C : B { void foo(); }; void test() { C c; } } // rdar://problem/8302168 namespace test2 { struct X1 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X1 parm7); // expected-error {{parameter type 'test2::X1' is an abstract class}} void g(X1 parm8[2]); // expected-error {{array of abstract class type 'test2::X1'}} }; template struct X2 { virtual void xfunc(void) = 0; // expected-note {{unimplemented pure virtual method}} void g(X2 parm10); // expected-error {{parameter type 'X2' is an abstract class}} void g(X2 parm11[2]); // expected-error {{array of abstract class type 'X2'}} }; } namespace test3 { struct A { // expected-note {{not complete until}} A x; // expected-error {{field has incomplete type}} virtual void abstract() = 0; }; struct B { // expected-note {{not complete until}} virtual void abstract() = 0; B x; // expected-error {{field has incomplete type}} }; struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test4 { template struct A { A x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct B { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} B x; // expected-error {{abstract class}} }; template struct C { static C x; // expected-error {{abstract class}} virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} }; template struct D { virtual void abstract() = 0; // expected-note {{unimplemented pure virtual method}} static D x; // expected-error {{abstract class}} }; } namespace test5 { struct A { A(int); virtual ~A() = 0; }; // expected-note {{pure virtual method}} const A &a = 0; // expected-error {{abstract class}} void f(const A &a = 0); // expected-error {{abstract class}} void g() { f(0); } // expected-error {{abstract class}} } // PR9247: Crash on invalid in clang::Sema::ActOnFinishCXXMemberSpecification namespace pr9247 { struct A { virtual void g(const A& input) = 0; struct B { C* f(int foo); }; }; } namespace pr12658 { class C { public: C(int v){} virtual void f() = 0; // expected-note {{unimplemented pure virtual method 'f' in 'C'}} }; void foo( C& c ) {} void bar( void ) { foo(C(99)); // expected-error {{allocating an object of abstract class type 'pr12658::C'}} } } namespace pr16659 { struct A { A(int); virtual void x() = 0; // expected-note {{unimplemented pure virtual method 'x' in 'RedundantInit'}} }; struct B : virtual A {}; struct C : B { C() : A(37) {} void x() override {} }; struct X { friend class Z; private: X &operator=(const X&); }; struct Y : virtual X { // expected-note {{::X' has an inaccessible copy assignment}} virtual ~Y() = 0; }; struct Z : Y {}; // expected-note {{::Y' has a deleted copy assignment}} void f(Z &a, const Z &b) { a = b; } // expected-error {{copy assignment operator is implicitly deleted}} struct RedundantInit : virtual A { RedundantInit() : A(0) {} // expected-warning {{initializer for virtual base class 'pr16659::A' of abstract class 'RedundantInit' will never be used}} }; } @