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// RUN: %clang_cc1 -std=c++98 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -std=c++11 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -std=c++14 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -std=c++17 %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
// RUN: %clang_cc1 -std=c++2a %s -verify -fexceptions -fcxx-exceptions -pedantic-errors
namespace dr1111 { // dr1111: yes
namespace example1 {
template <typename> struct set;
struct X {
template <typename T> void set(const T &value);
};
void foo() {
X x;
#pragma clang diagnostic push
#if __cplusplus < 201103L
#pragma clang diagnostic ignored "-Wambiguous-member-template"
#endif
x.set<double>(3.2);
#pragma clang diagnostic pop
}
struct Y {};
void bar() {
Y y;
y.set<double>(3.2); // expected-error {{no member named 'set' in 'dr1111::example1::Y'}}
}
} // namespace example1
namespace example2 {
struct A {};
namespace N {
struct A {
void g() {}
template <class T> operator T();
};
} // namespace N
void baz() {
N::A a;
a.operator A();
}
} // namespace example2
} // namespace dr1111
namespace dr1113 { // dr1113: partial
namespace named {
extern int a; // expected-note {{previous}}
static int a; // expected-error {{static declaration of 'a' follows non-static}}
}
namespace {
extern int a;
static int a; // ok, both declarations have internal linkage
int b = a;
}
// FIXME: Per DR1113 and DR4, this is ill-formed due to ambiguity: the second
// 'f' has internal linkage, and so does not have C language linkage, so is
// not a redeclaration of the first 'f'.
//
// To avoid a breaking change here, Clang ignores the "internal linkage" effect
// of anonymous namespaces on declarations declared within an 'extern "C"'
// linkage-specification.
extern "C" void f();
namespace {
extern "C" void f();
}
void g() { f(); }
}
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