110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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// C++03 [namespace.udecl]p11: (per DR101)
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// If a function declaration in namespace scope or block scope has
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// the same name and the same parameter types as a function
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// introduced by a using-declaration, and the declarations do not declare the
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// same function, the program is ill-formed. [Note: two using-declarations may
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// introduce functions with the same name and the same parameter types. If,
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// for a call to an unqualified function name, function overload resolution
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// selects the functions introduced by such using-declarations, the function
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// call is ill-formed.]
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//
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// FIXME: DR565 introduces parallel wording here for function templates.
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namespace test0 {
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namespace ns { void foo(); } // expected-note {{target of using declaration}}
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int foo(void); // expected-note {{conflicting declaration}}
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using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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}
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namespace test1 {
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namespace ns { void foo(); } // expected-note {{target of using declaration}}
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using ns::foo; //expected-note {{using declaration}}
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int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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namespace test2 {
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namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
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void test0() {
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int foo(void); // expected-note {{conflicting declaration}}
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using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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}
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void test1() {
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using ns::foo; //expected-note {{using declaration}}
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int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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}
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namespace test3 {
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namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
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class Test0 {
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void test() {
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int foo(void); // expected-note {{conflicting declaration}}
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using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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}
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};
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class Test1 {
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void test() {
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using ns::foo; //expected-note {{using declaration}}
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int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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};
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}
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namespace test4 {
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namespace ns { void foo(); } // expected-note 2 {{target of using declaration}}
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template <typename> class Test0 {
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void test() {
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int foo(void); // expected-note {{conflicting declaration}}
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using ns::foo; // expected-error {{target of using declaration conflicts with declaration already in scope}}
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}
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};
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template <typename> class Test1 {
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void test() {
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using ns::foo; //expected-note {{using declaration}}
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int foo(void); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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};
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}
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// FIXME: we should be able to diagnose both of these, but we can't.
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namespace test5 {
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namespace ns { void foo(int); }
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template <typename T> class Test0 {
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void test() {
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int foo(T);
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using ns::foo;
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}
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};
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template <typename T> class Test1 {
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void test() {
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using ns::foo;
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int foo(T);
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}
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};
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template class Test0<int>;
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template class Test1<int>;
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}
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namespace test6 {
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namespace ns { void foo(); } // expected-note {{target of using declaration}}
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using ns::foo; // expected-note {{using declaration}}
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namespace ns {
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using test6::foo;
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void foo() {}
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}
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void foo(); // expected-error {{declaration conflicts with target of using declaration already in scope}}
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}
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namespace test7 {
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void foo();
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using test7::foo;
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void foo() {}
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}
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