summaryrefslogtreecommitdiff
path: root/clang/test/SemaCXX/member-pointer.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'clang/test/SemaCXX/member-pointer.cpp')
-rw-r--r--clang/test/SemaCXX/member-pointer.cpp314
1 files changed, 314 insertions, 0 deletions
diff --git a/clang/test/SemaCXX/member-pointer.cpp b/clang/test/SemaCXX/member-pointer.cpp
new file mode 100644
index 0000000..4e8b4a8
--- /dev/null
+++ b/clang/test/SemaCXX/member-pointer.cpp
@@ -0,0 +1,314 @@
+// RUN: %clang_cc1 -fsyntax-only -verify %s
+
+struct A {};
+enum B { Dummy };
+namespace C {}
+struct D : A {};
+struct E : A {};
+struct F : D, E {};
+struct G : virtual D {};
+
+int A::*pdi1;
+int (::A::*pdi2);
+int (A::*pfi)(int);
+
+int B::*pbi; // expected-error {{expected a class or namespace}}
+int C::*pci; // expected-error {{'pci' does not point into a class}}
+void A::*pdv; // expected-error {{'pdv' declared as a member pointer to void}}
+int& A::*pdr; // expected-error {{'pdr' declared as a member pointer to a reference}}
+
+void f() {
+ // This requires tentative parsing.
+ int (A::*pf)(int, int);
+
+ // Implicit conversion to bool.
+ bool b = pdi1;
+ b = pfi;
+
+ // Conversion from null pointer constant.
+ pf = 0;
+ pf = __null;
+
+ // Conversion to member of derived.
+ int D::*pdid = pdi1;
+ pdid = pdi2;
+
+ // Fail conversion due to ambiguity and virtuality.
+ int F::*pdif = pdi1; // expected-error {{ambiguous conversion from pointer to member of base class 'A' to pointer to member of derived class 'F':}}
+ 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}}
+
+ // Conversion to member of base.
+ pdi1 = pdid; // expected-error {{assigning to 'int A::*' from incompatible type 'int D::*'}}
+
+ // Comparisons
+ int (A::*pf2)(int, int);
+ int (D::*pf3)(int, int) = 0;
+ bool b1 = (pf == pf2); (void)b1;
+ bool b2 = (pf != pf2); (void)b2;
+ bool b3 = (pf == pf3); (void)b3;
+ bool b4 = (pf != 0); (void)b4;
+}
+
+struct TheBase
+{
+ void d();
+};
+
+struct HasMembers : TheBase
+{
+ int i;
+ void f();
+
+ void g();
+ void g(int);
+ static void g(double);
+};
+
+namespace Fake
+{
+ int i;
+ void f();
+}
+
+void g() {
+ HasMembers hm;
+
+ int HasMembers::*pmi = &HasMembers::i;
+ int *pni = &Fake::i;
+ int *pmii = &hm.i;
+
+ void (HasMembers::*pmf)() = &HasMembers::f;
+ void (*pnf)() = &Fake::f;
+ &hm.f; // expected-error {{cannot create a non-constant pointer to member function}}
+
+ void (HasMembers::*pmgv)() = &HasMembers::g;
+ void (HasMembers::*pmgi)(int) = &HasMembers::g;
+ void (*pmgd)(double) = &HasMembers::g;
+
+ void (HasMembers::*pmd)() = &HasMembers::d;
+}
+
+struct Incomplete;
+
+void h() {
+ HasMembers hm, *phm = &hm;
+
+ int HasMembers::*pi = &HasMembers::i;
+ hm.*pi = 0;
+ int i = phm->*pi;
+ (void)&(hm.*pi);
+ (void)&(phm->*pi);
+ (void)&((&hm)->*pi);
+
+ void (HasMembers::*pf)() = &HasMembers::f;
+ (hm.*pf)();
+ (phm->*pf)();
+
+ (void)(hm->*pi); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'HasMembers'}}
+ (void)(phm.*pi); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'HasMembers *'}}
+ (void)(i.*pi); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'int'}}
+ int *ptr;
+ (void)(ptr->*pi); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'int *'}}
+
+ int A::*pai = 0;
+ D d, *pd = &d;
+ (void)(d.*pai);
+ (void)(pd->*pai);
+ F f, *ptrf = &f;
+ (void)(f.*pai); // expected-error {{left hand operand to .* must be a class compatible with the right hand operand, but is 'F'}}
+ (void)(ptrf->*pai); // expected-error {{left hand operand to ->* must be a pointer to class compatible with the right hand operand, but is 'F *'}}
+
+ (void)(hm.*i); // expected-error {{pointer-to-member}}
+ (void)(phm->*i); // expected-error {{pointer-to-member}}
+
+ // Okay
+ Incomplete *inc;
+ int Incomplete::*pii = 0;
+ (void)(inc->*pii);
+}
+
+struct OverloadsPtrMem
+{
+ int operator ->*(const char *);
+};
+
+void i() {
+ OverloadsPtrMem m;
+ int foo = m->*"Awesome!";
+}
+
+namespace pr5985 {
+ struct c {
+ void h();
+ void f() {
+ void (c::*p)();
+ p = &h; // expected-error {{must explicitly qualify}}
+ p = &this->h; // expected-error {{cannot create a non-constant pointer to member function}}
+ p = &(*this).h; // expected-error {{cannot create a non-constant pointer to member function}}
+ }
+ };
+}
+
+namespace pr6783 {
+ struct Base {};
+ struct X; // expected-note {{forward declaration}}
+
+ int test1(int Base::* p2m, X* object)
+ {
+ return object->*p2m; // expected-error {{left hand operand to ->*}}
+ }
+}
+
+namespace PR7176 {
+ namespace base
+ {
+ struct Process
+ { };
+ struct Continuous : Process
+ {
+ bool cond();
+ };
+ }
+
+ typedef bool( base::Process::*Condition )();
+
+ void m()
+ { (void)(Condition) &base::Continuous::cond; }
+}
+
+namespace rdar8358512 {
+ // We can't call this with an overload set because we're not allowed
+ // to look into overload sets unless the parameter has some kind of
+ // function type.
+ template <class F> void bind(F f); // expected-note 12 {{candidate template ignored}}
+ template <class F, class T> void bindmem(F (T::*f)()); // expected-note 4 {{candidate template ignored}}
+ template <class F> void bindfn(F (*f)()); // expected-note 4 {{candidate template ignored}}
+
+ struct A {
+ void nonstat();
+ void nonstat(int);
+
+ void mixed();
+ static void mixed(int);
+
+ static void stat();
+ static void stat(int);
+
+ template <typename T> struct Test0 {
+ void test() {
+ bind(&nonstat); // expected-error {{no matching function for call}}
+ bind(&A::nonstat); // expected-error {{no matching function for call}}
+
+ bind(&mixed); // expected-error {{no matching function for call}}
+ bind(&A::mixed); // expected-error {{no matching function for call}}
+
+ bind(&stat); // expected-error {{no matching function for call}}
+ bind(&A::stat); // expected-error {{no matching function for call}}
+ }
+ };
+
+ template <typename T> struct Test1 {
+ void test() {
+ bindmem(&nonstat); // expected-error {{no matching function for call}}
+ bindmem(&A::nonstat);
+
+ bindmem(&mixed); // expected-error {{no matching function for call}}
+ bindmem(&A::mixed);
+
+ bindmem(&stat); // expected-error {{no matching function for call}}
+ bindmem(&A::stat); // expected-error {{no matching function for call}}
+ }
+ };
+
+ template <typename T> struct Test2 {
+ void test() {
+ bindfn(&nonstat); // expected-error {{no matching function for call}}
+ bindfn(&A::nonstat); // expected-error {{no matching function for call}}
+
+ bindfn(&mixed); // expected-error {{no matching function for call}}
+ bindfn(&A::mixed); // expected-error {{no matching function for call}}
+
+ bindfn(&stat);
+ bindfn(&A::stat);
+ }
+ };
+ };
+
+ template <class T> class B {
+ void nonstat();
+ void nonstat(int);
+
+ void mixed();
+ static void mixed(int);
+
+ static void stat();
+ static void stat(int);
+
+ // None of these can be diagnosed yet, because the arguments are
+ // still dependent.
+ void test0a() {
+ bind(&nonstat);
+ bind(&B::nonstat);
+
+ bind(&mixed);
+ bind(&B::mixed);
+
+ bind(&stat);
+ bind(&B::stat);
+ }
+
+ void test0b() {
+ bind(&nonstat); // expected-error {{no matching function for call}}
+ bind(&B::nonstat); // expected-error {{no matching function for call}}
+
+ bind(&mixed); // expected-error {{no matching function for call}}
+ bind(&B::mixed); // expected-error {{no matching function for call}}
+
+ bind(&stat); // expected-error {{no matching function for call}}
+ bind(&B::stat); // expected-error {{no matching function for call}}
+ }
+ };
+
+ template void B<int>::test0b(); // expected-note {{in instantiation}}
+}
+
+namespace PR9973 {
+ template<class R, class T> struct dm
+ {
+ typedef R T::*F;
+ F f_;
+ template<class U> int & call(U u)
+ { 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'}}
+
+ template<class U> int operator()(U u)
+ { call(u); } // expected-note{{in instantiation of}}
+ };
+
+ template<class R, class T>
+ dm<R, T> mem_fn(R T::*) ;
+
+ struct test
+ { int nullary_v(); };
+
+ void f()
+ {
+ test* t;
+ mem_fn(&test::nullary_v)(t); // expected-note{{in instantiation of}}
+ }
+}
+
+namespace test8 {
+ struct A { int foo; };
+ int test1() {
+ // Verify that we perform (and check) an lvalue conversion on the operands here.
+ return (*((A**) 0)) // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
+ ->**(int A::**) 0; // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
+ }
+
+ int test2() {
+ // Verify that we perform (and check) an lvalue conversion on the operands here.
+ // TODO: the .* should itself warn about being a dereference of null.
+ return (*((A*) 0))
+ .**(int A::**) 0; // expected-warning {{indirection of non-volatile null pointer will be deleted}} expected-note {{consider}}
+ }
+}
generated by cgit v1.2.3 (git 2.46.2) at 2024-11-10 09:36:59 +0000