forked from OSchip/llvm-project
364 lines
11 KiB
C++
364 lines
11 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify -std=c++98 %s
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// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
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extern "C" { void f(bool); }
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namespace std {
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using ::f;
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inline void f() { return f(true); }
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}
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namespace M {
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void f(float);
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}
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namespace N {
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using M::f;
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void f(int) { } // expected-note{{previous}}
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void f(int) { } // expected-error{{redefinition}}
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}
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namespace N {
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void f(double);
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void f(long);
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}
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struct X0 {
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void operator()(int);
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void operator()(long);
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};
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struct X1 : X0 {
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void operator()(float&);
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using X0::operator();
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void test() {
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(*this)(1);
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}
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};
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struct A { void f(); };
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struct B : A { };
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class C : B { using B::f; };
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// PR5751: Resolve overloaded functions through using decls.
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namespace O {
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void f(int i);
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void f(double d);
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}
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namespace P {
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void f();
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void g(void (*ptr)(int));
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using O::f;
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void test() {
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f();
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f(1);
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void (*f_ptr1)(double) = f;
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void (*f_ptr2)() = f;
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g(f);
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}
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}
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// Make sure that ADL can find names brought in by using decls.
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namespace test0 {
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namespace ns {
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class Foo {};
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namespace inner {
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void foo(char *); // expected-note {{no known conversion}}
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}
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using inner::foo;
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}
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void test(ns::Foo *p) {
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foo(*p); // expected-error {{no matching function for call to 'foo'}}
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}
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}
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// Redeclarations!
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namespace test1 {
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namespace ns0 { struct Foo {}; }
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namespace A { void foo(ns0::Foo *p, int y, int z); }
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namespace ns2 { using A::foo; }
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namespace ns1 { struct Bar : ns0::Foo {}; }
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namespace A { void foo(ns0::Foo *p, int y, int z = 0); } // expected-note {{candidate}}
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namespace ns1 { using A::foo; }
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namespace ns2 { struct Baz : ns1::Bar {}; }
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namespace A { void foo(ns0::Foo *p, int y = 0, int z); }
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void test(ns2::Baz *p) {
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foo(p, 0, 0); // okay!
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foo(p, 0); // should be fine!
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foo(p); // expected-error {{no matching function}}
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}
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}
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namespace test2 {
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namespace ns { int foo; }
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template <class T> using ns::foo; // expected-error {{cannot template a using declaration}}
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// PR8022
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struct A {
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template <typename T> void f(T);
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};
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class B : A {
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template <typename T> using A::f<T>; // expected-error {{cannot template a using declaration}}
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};
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}
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// PR8756
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namespace foo
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{
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class Class1; // expected-note{{forward declaration}}
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class Class2
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{
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using ::foo::Class1::Function; // expected-error{{incomplete type 'foo::Class1' named in nested name specifier}}
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};
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}
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// Don't suggest non-typenames for positions requiring typenames.
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namespace using_suggestion_tyname_val {
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namespace N { void FFF() {} }
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using typename N::FFG; // expected-error {{no member named 'FFG' in namespace 'using_suggestion_tyname_val::N'}}
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}
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namespace using_suggestion_member_tyname_val {
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class CCC { public: void AAA() { } };
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class DDD : public CCC { public: using typename CCC::AAB; }; // expected-error {{no member named 'AAB' in 'using_suggestion_member_tyname_val::CCC'}}
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}
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namespace using_suggestion_tyname_val_dropped_specifier {
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void FFF() {}
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namespace N { }
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using typename N::FFG; // expected-error {{no member named 'FFG' in namespace 'using_suggestion_tyname_val_dropped_specifier::N'}}
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}
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// Currently hints aren't provided to drop out the incorrect M::.
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namespace using_suggestion_ty_dropped_nested_specifier {
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namespace N {
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class AAA {}; // expected-note {{'N::AAA' declared here}}
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namespace M { }
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}
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using N::M::AAA; // expected-error {{no member named 'AAA' in namespace 'using_suggestion_ty_dropped_nested_specifier::N::M'; did you mean 'N::AAA'?}}
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}
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namespace using_suggestion_tyname_ty_dropped_nested_specifier {
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namespace N {
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class AAA {}; // expected-note {{'N::AAA' declared here}}
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namespace M { }
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}
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using typename N::M::AAA; // expected-error {{no member named 'AAA' in namespace 'using_suggestion_tyname_ty_dropped_nested_specifier::N::M'; did you mean 'N::AAA'?}}
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}
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namespace using_suggestion_val_dropped_nested_specifier {
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namespace N {
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void FFF() {} // expected-note {{'N::FFF' declared here}}
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namespace M { }
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}
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using N::M::FFF; // expected-error {{no member named 'FFF' in namespace 'using_suggestion_val_dropped_nested_specifier::N::M'; did you mean 'N::FFF'?}}
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}
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namespace UsingDeclVsHiddenName {
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namespace A {
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enum HiddenTag1 {}; // expected-note {{previous use is here}}
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enum HiddenTag2 {}; // expected-note {{target}}
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int HiddenFn1; // expected-note {{target}}
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int HiddenFn2; // expected-note {{target}}
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int HiddenLocalExtern1;
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int HiddenLocalExtern2;
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}
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namespace B {
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using A::HiddenTag1;
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using A::HiddenFn1; // expected-note {{using declaration}}
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using A::HiddenLocalExtern1;
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struct S {
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friend struct HiddenTag1; // expected-error {{tag type that does not match previous}}
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friend struct HiddenTag2; // expected-note {{conflicting declaration}}
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friend void HiddenFn1(); // expected-error {{cannot befriend target of using declaration}}
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friend void HiddenFn2(); // expected-note {{conflicting declaration}}
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void f() {
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// OK, these are not in the scope of namespace B, even though they're
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// members of the namespace.
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void HiddenLocalExtern1();
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void HiddenLocalExtern2();
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}
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};
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using A::HiddenTag2; // expected-error {{conflicts with declaration already in scope}}
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using A::HiddenFn2; // expected-error {{conflicts with declaration already in scope}}
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using A::HiddenLocalExtern2;
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}
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}
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namespace PR19171 {
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struct Z {
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Z();
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};
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typedef struct {
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Z i;
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} S;
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struct Y : S {
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using S::S;
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#if __cplusplus < 201103L
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// expected-error@-2 {{no member named 'S' in 'PR19171::S'}}
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#endif
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};
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// [namespace.udecl]p3: In a using-declaration used as a member-declaration,
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// the nested-name-specifier shall name a base class of the class being defined.
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// If such a using-declaration names a constructor, the nested-name-specifier
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// shall name a direct base class of the class being defined;
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struct B_blah { };
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struct C_blah : B_blah { C_blah(int); }; // expected-note 0-1{{declared here}}
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struct D1 : C_blah {
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// FIXME: We should be able to correct this in C++11 mode.
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using B_blah::C_blah; // expected-error-re {{no member named 'C_blah' in 'PR19171::B_blah'{{$}}}}
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};
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struct D2 : C_blah {
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// Somewhat bizarrely, this names the injected-class-name of B_blah within
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// C_blah, and is valid.
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using C_blah::B_blah;
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};
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struct D3 : C_blah {
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using C_blah::D_blah;
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#if __cplusplus < 201103L
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// expected-error-re@-2 {{no member named 'D_blah' in 'PR19171::C_blah'{{$}}}}
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#else
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// expected-error@-4 {{no member named 'D_blah' in 'PR19171::C_blah'; did you mean 'C_blah'?}}
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#endif
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};
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#if __cplusplus >= 201103L
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D3 d3(0); // ok
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#endif
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struct E { };
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struct EE { int EE; };
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struct F : E {
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using E::EE; // expected-error-re {{no member named 'EE' in 'PR19171::E'{{$}}}}
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};
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}
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namespace TypoCorrectTemplateMember {
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struct A {
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template<typename T> void foobar(T); // expected-note {{'foobar' declared here}}
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};
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struct B : A {
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using A::goobar; // expected-error {{no member named 'goobar' in 'TypoCorrectTemplateMember::A'; did you mean 'foobar'?}}
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};
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}
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namespace use_instance_in_static {
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struct A { int n; };
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struct B : A {
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using A::n;
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static int f() { return n; } // expected-error {{invalid use of member 'n' in static member function}}
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};
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}
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namespace PR24030 {
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namespace X {
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class A; // expected-note {{target}}
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int i; // expected-note {{target}}
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}
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namespace Y {
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using X::A; // expected-note {{using}}
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using X::i; // expected-note {{using}}
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class A {}; // expected-error {{conflicts}}
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int i; // expected-error {{conflicts}}
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}
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}
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namespace PR24033 {
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extern int a; // expected-note 2{{target of using declaration}}
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void f(); // expected-note 2{{target of using declaration}}
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struct s; // expected-note 2{{target of using declaration}}
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enum e {}; // expected-note 2{{target of using declaration}}
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template<typename> extern int vt; // expected-note 2{{target of using declaration}} expected-warning 0-1{{extension}}
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template<typename> void ft(); // expected-note 2{{target of using declaration}}
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template<typename> struct st; // expected-note 2{{target of using declaration}}
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namespace X {
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using PR24033::a; // expected-note {{using declaration}}
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using PR24033::f; // expected-note {{using declaration}}
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using PR24033::s; // expected-note {{using declaration}}
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using PR24033::e; // expected-note {{using declaration}}
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using PR24033::vt; // expected-note {{using declaration}}
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using PR24033::ft; // expected-note {{using declaration}}
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using PR24033::st; // expected-note {{using declaration}}
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extern int a; // expected-error {{declaration conflicts with target of using declaration already in scope}}
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void f(); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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struct s; // expected-error {{declaration conflicts with target of using declaration already in scope}}
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enum e {}; // expected-error {{declaration conflicts with target of using declaration already in scope}}
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template<typename> extern int vt; // expected-error {{declaration conflicts with target of using declaration already in scope}} expected-warning 0-1{{extension}}
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template<typename> void ft(); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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template<typename> struct st; // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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namespace Y {
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extern int a; // expected-note {{conflicting declaration}}
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void f(); // expected-note {{conflicting declaration}}
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struct s; // expected-note {{conflicting declaration}}
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enum e {}; // expected-note {{conflicting declaration}}
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template<typename> extern int vt; // expected-note {{conflicting declaration}} expected-warning 0-1{{extension}}
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template<typename> void ft(); // expected-note {{conflicting declaration}}
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template<typename> struct st; // expected-note {{conflicting declaration}}
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using PR24033::a; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::f; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::s; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::e; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::vt; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::ft; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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using PR24033::st; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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}
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}
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namespace field_use {
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struct A { int field; };
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struct B : A {
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// Previously Clang rejected this valid C++11 code because it didn't look
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// through the UsingShadowDecl.
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using A::field;
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#if __cplusplus < 201103L
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// expected-error@+2 {{invalid use of non-static data member 'field'}}
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#endif
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enum { X = sizeof(field) };
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};
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}
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namespace tag_vs_var {
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namespace N {
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struct X {};
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struct Y {};
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int Y;
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int Z;
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}
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using N::X;
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using N::Y;
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using N::Z;
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namespace N {
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int X;
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struct Z {};
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}
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using N::X;
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using N::Y;
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using N::Z;
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}
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