llvm-project/clang/test/SemaCXX/using-directive.cpp

109 lines
2.5 KiB
C++

// RUN: clang-cc -fsyntax-only -verify %s
namespace A {
short i; // expected-note 2{{candidate found by name lookup is 'A::i'}}
namespace B {
long i; // expected-note{{candidate found by name lookup is 'A::B::i'}}
void f() {} // expected-note{{candidate function}}
int k;
namespace E {} // \
expected-note{{candidate found by name lookup is 'A::B::E'}}
}
namespace E {} // expected-note{{candidate found by name lookup is 'A::E'}}
namespace C {
using namespace B;
namespace E {} // \
expected-note{{candidate found by name lookup is 'A::C::E'}}
}
void f() {} // expected-note{{candidate function}}
class K1 {
void foo();
};
void local_i() {
char i;
using namespace A;
using namespace B;
int a[sizeof(i) == sizeof(char)? 1 : -1]; // okay
}
namespace B {
int j;
}
void ambig_i() {
using namespace A;
using namespace A::B;
(void) i; // expected-error{{reference to 'i' is ambiguous}}
f(); // expected-error{{call to 'f' is ambiguous}}
(void) j; // okay
using namespace C;
(void) k; // okay
using namespace E; // expected-error{{reference to 'E' is ambiguous}}
}
struct K2 {}; // expected-note{{candidate found by name lookup is 'A::K2'}}
}
struct K2 {}; // expected-note{{candidate found by name lookup is 'K2'}}
using namespace A;
void K1::foo() {} // okay
// FIXME: Do we want err_ovl_no_viable_function_in_init here?
struct K2 k2; // expected-error{{reference to 'K2' is ambiguous}} \
expected-error{{incomplete type}}
// FIXME: This case is incorrectly diagnosed!
//K2 k3;
class X { // expected-note{{candidate found by name lookup is 'X'}}
// FIXME: produce a suitable error message for this
using namespace A; // expected-error{{not allowed}}
};
namespace N {
struct K2;
struct K2 { };
}
namespace Ni {
int i(); // expected-note{{candidate found by name lookup is 'Ni::i'}}
}
namespace NiTest {
using namespace A;
using namespace Ni;
int test() {
return i; // expected-error{{reference to 'i' is ambiguous}}
}
}
namespace OneTag {
struct X; // expected-note{{candidate found by name lookup is 'OneTag::X'}}
}
namespace OneFunction {
void X(); // expected-note{{candidate found by name lookup is 'OneFunction::X'}}
}
namespace TwoTag {
struct X; // expected-note{{candidate found by name lookup is 'TwoTag::X'}}
}
namespace FuncHidesTagAmbiguity {
using namespace OneTag;
using namespace OneFunction;
using namespace TwoTag;
void test() {
(void)X(); // expected-error{{reference to 'X' is ambiguous}}
}
}