// { dg-do compile { target c++11 } } // { dg-options "" } struct A { int a; struct { int b; }; }; struct B { int a; union { int c; long d; }; }; struct C { int a; private: int b; }; struct D { int a; private: static int b; }; struct E { protected: int a; }; struct F { int a; }; struct G : public F { int b; }; struct H { int b; }; struct I : public F, H {}; void test (A &a, B &b, C &c, D &d, E &e, F &f, G &g, H &h, I &i) { auto [ j ] = a; // { dg-error "cannot decompose class type 'A' because it has an anonymous struct member" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } auto [ k ] { b }; // { dg-error "cannot decompose class type 'B' because it has an anonymous union member" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } auto [ l, l2 ] = c; // { dg-error "cannot decompose non-public member 'C::b' of 'C'" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } auto [ m ] = d; // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } } auto [ n ] { e }; // { dg-error "cannot decompose non-public member 'E::a' of 'E'" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } auto [ o ] { f }; // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } } auto & [ p ] { g }; // { dg-error "cannot decompose class type 'G': both it and its base class 'F' have non-static data members" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } auto [ q ] { h }; // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } } auto [ r ] { i }; // { dg-error "cannot decompose class type 'I': its base classes 'F' and 'H' have non-static data members" } // { dg-warning "structured bindings only available with -std=c..1z or -std=gnu..1z" "" { target c++14_down } .-1 } }