forked from OSchip/llvm-project
131 lines
3.7 KiB
C++
131 lines
3.7 KiB
C++
// RUN: clang-cc -fsyntax-only -verify %s
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struct A {};
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enum B { Dummy };
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namespace C {}
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struct D : A {};
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struct E : A {};
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struct F : D, E {};
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struct G : virtual D {};
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int A::*pdi1;
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int (::A::*pdi2);
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int (A::*pfi)(int);
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int B::*pbi; // expected-error {{expected a class or namespace}} \
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// expected-error{{does not point into a class}}
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int C::*pci; // expected-error {{'pci' does not point into a class}}
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void A::*pdv; // expected-error {{'pdv' declared as a member pointer to void}}
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int& A::*pdr; // expected-error {{'pdr' declared as a member pointer to a reference}}
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void f() {
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// This requires tentative parsing.
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int (A::*pf)(int, int);
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// Implicit conversion to bool.
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bool b = pdi1;
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b = pfi;
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// Conversion from null pointer constant.
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pf = 0;
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pf = __null;
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// Conversion to member of derived.
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int D::*pdid = pdi1;
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pdid = pdi2;
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// Fail conversion due to ambiguity and virtuality.
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int F::*pdif = pdi1; // expected-error {{ambiguous conversion from pointer to member of base class 'struct A' to pointer to member of derived class 'struct F'}} expected-error {{incompatible type}}
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int G::*pdig = pdi1; // expected-error {{conversion from pointer to member of class 'struct A' to pointer to member of class 'struct G' via virtual base 'struct D' is not allowed}} expected-error {{incompatible type}}
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// Conversion to member of base.
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pdi1 = pdid; // expected-error {{incompatible type assigning 'int struct D::*', expected 'int struct A::*'}}
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}
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struct TheBase
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{
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void d();
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};
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struct HasMembers : TheBase
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{
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int i;
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void f();
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void g();
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void g(int);
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static void g(double);
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};
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namespace Fake
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{
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int i;
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void f();
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}
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void g() {
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HasMembers hm;
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int HasMembers::*pmi = &HasMembers::i;
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int *pni = &Fake::i;
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int *pmii = &hm.i;
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void (HasMembers::*pmf)() = &HasMembers::f;
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void (*pnf)() = &Fake::f;
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&hm.f; // FIXME: needs diagnostic expected-warning{{result unused}}
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void (HasMembers::*pmgv)() = &HasMembers::g;
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void (HasMembers::*pmgi)(int) = &HasMembers::g;
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void (*pmgd)(double) = &HasMembers::g;
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void (HasMembers::*pmd)() = &HasMembers::d;
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}
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struct Incomplete;
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void h() {
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HasMembers hm, *phm = &hm;
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int HasMembers::*pi = &HasMembers::i;
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hm.*pi = 0;
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int i = phm->*pi;
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(void)&(hm.*pi);
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(void)&(phm->*pi);
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(void)&((&hm)->*pi); // expected-error {{address expression must be an lvalue or a function designator}}
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void (HasMembers::*pf)() = &HasMembers::f;
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(hm.*pf)();
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(phm->*pf)();
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(void)(hm->*pi); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'struct HasMembers'}}
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(void)(phm.*pi); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'struct HasMembers *'}}
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(void)(i.*pi); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'int'}}
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int *ptr;
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(void)(ptr->*pi); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'int *'}}
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int A::*pai = 0;
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D d, *pd = &d;
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(void)(d.*pai);
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(void)(pd->*pai);
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F f, *ptrf = &f;
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(void)(f.*pai); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'struct F'}}
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(void)(ptrf->*pai); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'struct F *'}}
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(void)(hm.*i); // expected-error {{pointer-to-member}}
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(void)(phm->*i); // expected-error {{pointer-to-member}}
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Incomplete *inc;
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int Incomplete::*pii = 0;
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(void)(inc->*pii); // okay
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}
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struct OverloadsPtrMem
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{
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int operator ->*(const char *);
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};
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void i() {
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OverloadsPtrMem m;
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int foo = m->*"Awesome!";
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}
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