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// DR 391 says that we always bind a reference to the base subobject; it is
// incorrect to call the A copy constructor to initialize the parameter of
// f.
int fail;
struct A {
A() { }
A(const A&) { fail = 1; }
};
struct B : public A { };
struct X {
operator B() { return B(); }
};
X x;
void f (const A&) { }
int main()
{
f(x);
return fail;
}
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