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// { dg-do compile }

// { dg-do compile }

// Origin: Giovanni Bajo 

// Origin: Giovanni Bajo 

// DR1: What if two using-declarations refer to the same function but the

// DR1: What if two using-declarations refer to the same function but the

//  declarations introduce different default-arguments?

//  declarations introduce different default-arguments?

namespace A {

namespace A {

  extern "C" void f(int = 5);

  extern "C" void f(int = 5);

}

}

namespace B {

namespace B {

  extern "C" void f(int = 5);

  extern "C" void f(int = 5);

}

}

using A::f;

using A::f;

using B::f;

using B::f;

void use() {

void use() {

  f(3);

  f(3);

  f();        // { dg-error "" "" { xfail *-*-* } }

  f();        // { dg-error "" "" { xfail *-*-* } }

}

}