314 lines
8.8 KiB
C++
314 lines
8.8 KiB
C++
// RUN: %clang_cc1 -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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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 'A' to pointer to member of derived class 'F':}}
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int G::*pdig = pdi1; // expected-error {{conversion from pointer to member of class 'A' to pointer to member of class 'G' via virtual base 'D' is not allowed}}
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// Conversion to member of base.
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pdi1 = pdid; // expected-error {{assigning to 'int A::*' from incompatible type 'int D::*'}}
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// Comparisons
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int (A::*pf2)(int, int);
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int (D::*pf3)(int, int) = 0;
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bool b1 = (pf == pf2); (void)b1;
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bool b2 = (pf != pf2); (void)b2;
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bool b3 = (pf == pf3); (void)b3;
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bool b4 = (pf != 0); (void)b4;
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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; // expected-error {{cannot create a non-constant pointer to member function}}
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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);
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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 '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 '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 '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 '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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// Okay
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Incomplete *inc;
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int Incomplete::*pii = 0;
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(void)(inc->*pii);
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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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namespace pr5985 {
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struct c {
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void h();
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void f() {
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void (c::*p)();
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p = &h; // expected-error {{must explicitly qualify}}
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p = &this->h; // expected-error {{cannot create a non-constant pointer to member function}}
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p = &(*this).h; // expected-error {{cannot create a non-constant pointer to member function}}
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}
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};
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}
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namespace pr6783 {
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struct Base {};
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struct X; // expected-note {{forward declaration}}
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int test1(int Base::* p2m, X* object)
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{
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return object->*p2m; // expected-error {{left hand operand to ->*}}
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}
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}
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namespace PR7176 {
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namespace base
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{
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struct Process
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{ };
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struct Continuous : Process
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{
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bool cond();
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};
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}
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typedef bool( base::Process::*Condition )();
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void m()
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{ (void)(Condition) &base::Continuous::cond; }
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}
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namespace rdar8358512 {
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// We can't call this with an overload set because we're not allowed
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// to look into overload sets unless the parameter has some kind of
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// function type.
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template <class F> void bind(F f); // expected-note 12 {{candidate template ignored}}
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template <class F, class T> void bindmem(F (T::*f)()); // expected-note 4 {{candidate template ignored}}
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template <class F> void bindfn(F (*f)()); // expected-note 4 {{candidate template ignored}}
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struct A {
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void nonstat();
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void nonstat(int);
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void mixed();
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static void mixed(int);
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static void stat();
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static void stat(int);
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template <typename T> struct Test0 {
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void test() {
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bind(&nonstat); // expected-error {{no matching function for call}}
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bind(&A::nonstat); // expected-error {{no matching function for call}}
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bind(&mixed); // expected-error {{no matching function for call}}
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bind(&A::mixed); // expected-error {{no matching function for call}}
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bind(&stat); // expected-error {{no matching function for call}}
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bind(&A::stat); // expected-error {{no matching function for call}}
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}
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};
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template <typename T> struct Test1 {
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void test() {
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bindmem(&nonstat); // expected-error {{no matching function for call}}
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bindmem(&A::nonstat);
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bindmem(&mixed); // expected-error {{no matching function for call}}
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bindmem(&A::mixed);
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bindmem(&stat); // expected-error {{no matching function for call}}
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bindmem(&A::stat); // expected-error {{no matching function for call}}
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}
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};
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template <typename T> struct Test2 {
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void test() {
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bindfn(&nonstat); // expected-error {{no matching function for call}}
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bindfn(&A::nonstat); // expected-error {{no matching function for call}}
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bindfn(&mixed); // expected-error {{no matching function for call}}
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bindfn(&A::mixed); // expected-error {{no matching function for call}}
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bindfn(&stat);
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bindfn(&A::stat);
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}
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};
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};
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template <class T> class B {
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void nonstat();
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void nonstat(int);
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void mixed();
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static void mixed(int);
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static void stat();
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static void stat(int);
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// None of these can be diagnosed yet, because the arguments are
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// still dependent.
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void test0a() {
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bind(&nonstat);
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bind(&B::nonstat);
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bind(&mixed);
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bind(&B::mixed);
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bind(&stat);
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bind(&B::stat);
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}
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void test0b() {
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bind(&nonstat); // expected-error {{no matching function for call}}
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bind(&B::nonstat); // expected-error {{no matching function for call}}
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bind(&mixed); // expected-error {{no matching function for call}}
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bind(&B::mixed); // expected-error {{no matching function for call}}
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bind(&stat); // expected-error {{no matching function for call}}
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bind(&B::stat); // expected-error {{no matching function for call}}
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}
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};
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template void B<int>::test0b(); // expected-note {{in instantiation}}
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}
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namespace PR9973 {
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template<class R, class T> struct dm
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{
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typedef R T::*F;
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F f_;
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template<class U> int & call(U u)
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{ return u->*f_; } // expected-error{{reference to non-static member function must be called; did you mean to call it with no arguments?}} expected-error {{non-const lvalue reference to type 'int' cannot bind to a temporary of type 'int'}}
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template<class U> int operator()(U u)
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{ call(u); } // expected-note{{in instantiation of}}
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};
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template<class R, class T>
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dm<R, T> mem_fn(R T::*) ;
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struct test
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{ int nullary_v(); };
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void f()
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{
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test* t;
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mem_fn(&test::nullary_v)(t); // expected-note{{in instantiation of}}
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}
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}
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namespace test8 {
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struct A { int foo; };
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int test1() {
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// Verify that we perform (and check) an lvalue conversion on the operands here.
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return (*((A**) 0)) // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
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->**(int A::**) 0; // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
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}
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int test2() {
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// Verify that we perform (and check) an lvalue conversion on the operands here.
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// TODO: the .* should itself warn about being a dereference of null.
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return (*((A*) 0))
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.**(int A::**) 0; // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
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}
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}
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