1 // PR c++/79782 2 // { dg-do compile { target c++11 } } 3 // { dg-options "-Wunused-but-set-parameter -Wunused-parameter" } 4 5 struct E { virtual E *foo () const = 0; }; 6 struct F : virtual public E { }; GG7struct G : public virtual F { G (int x) : F () { } }; // { dg-warning "unused parameter" } 8 struct H : virtual public E { H (int x, int y); }; II9struct I : public virtual H { I (int x, int y) : H (x, y) { } }; // { dg-bogus "set but not used" } JJ10struct J : public virtual H { J (int x, int y) : H { x, y } { } }; // { dg-bogus "set but not used" } KK11struct K : public virtual H { K (int x, int y) : H (x * 0, y + 1) { } }; // { dg-bogus "set but not used" } LL12struct L : public virtual H { L (int x, int y) : H { x & 0, y | 1 } { } }; // { dg-bogus "set but not used" } 13