Viewing file:  decomp14.C (1.38 KB) -rw-r--r--
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// { dg-do compile { target c++11 } }
// { dg-options "" }
struct A { int f; };
struct B { int b; };
struct C : virtual A {};
struct D : virtual A {};
struct E { int f; };
struct F : A { int f; };
struct G : A, E {};
struct H : C, D {};
struct I : A, C {}; // { dg-warning "due to ambiguity" }
struct J : B {};
struct K : B, virtual J {}; // { dg-warning "due to ambiguity" }
struct L : virtual J {};
struct M : virtual J, L {};
void
foo (C &c, F &f, G &g, H &h, I &i, K &k, M &m)
{
auto [ ci ] = c; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
auto [ fi ] = f; // { dg-error "cannot decompose class type 'F': both it and its base class 'A' have non-static data members" }
// { dg-warning "structured bindings only available with" "" { target c++14_down } .-1 }
auto [ gi ] = g; // { dg-error "cannot decompose class type 'G': its base classes 'A' and 'E' have non-static data members" }
// { dg-warning "structured bindings only available with" "" { target c++14_down } .-1 }
auto [ hi ] = h; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
auto [ ki ] = k; // { dg-error "'B' is an ambiguous base of 'K'" }
// { dg-warning "structured bindings only available with" "" { target c++14_down } .-1 }
auto [ mi ] = m; // { dg-warning "structured bindings only available with" "" { target c++14_down } }
}
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