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// PR c++/51553 // { dg-do compile { target c++11 } } struct X { X(); }; struct Y { operator X() const; }; struct Z { explicit operator X() const; }; X a = { Y() }; X aa = Y(); X b{ Y() }; X bb(Y()); X c = { Z() }; // { dg-error "" } X cc = Z(); // { dg-error "" } X d{ Z() }; X dd( Z() );