| // { dg-do compile { target c++11 } } |
| // { dg-options "" } |
| |
| struct A { int a, b; float c; }; |
| A &bar (); |
| struct B { int d; }; |
| B baz (); |
| |
| void |
| test (A &b, B c) |
| { |
| int && [ d ] = c; // { dg-error "structured binding declaration cannot have type 'int'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| char & [ e, f, ff ] { b }; // { dg-error "structured binding declaration cannot have type 'char'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| auto&[g,h,i]=b; // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } } |
| decltype (auto) [ j ] = c; // { dg-error "structured binding declaration cannot have type 'decltype.auto.'" "" { target c++14 } } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| // { dg-error "expected primary-expression before 'decltype'" "" { target c++11_down } .-2 } |
| auto & & && & [ m, n, o ] = b; // { dg-error "multiple ref-qualifiers" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| constexpr auto [ p ] = c; // { dg-error "structured binding declaration cannot be 'constexpr'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| friend auto [ q ] = c; // { dg-error "'friend' used outside of class" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| typedef auto [ r ] = c; // { dg-error "structured binding declaration cannot be 'typedef'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| inline auto [ s ] = c; // { dg-error "structured binding declaration cannot be 'inline'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| __restrict auto [ t ] = c; // { dg-error "invalid use of 'restrict'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| long long auto [ u ] = c; // { dg-error "'long long' specified with 'auto'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| virtual auto [ v ] = c; // { dg-error "'virtual' outside class declaration" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| explicit auto [ w ] = c; // { dg-error "'explicit' outside class declaration" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| static auto [ x ] = c; // { dg-warning "structured binding declaration can be 'static' only in" "" { target c++17_down } } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| extern auto [ y ] { c }; // { dg-error "structured binding declaration cannot be 'extern'" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| thread_local auto [ z ] = c; // { dg-warning "structured binding declaration can be 'thread_local' only in" "" { target c++17_down } } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| } |
| |
| __thread auto [ z2 ] = B (); // { dg-warning "structured binding declaration can be '__thread' only in" "" { target c++17_down } } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| |
| void |
| test2 (auto & [ p ] = bar ()) // { dg-error "'p' was not declared in this scope" } |
| { // { dg-warning "auto" "" { target { ! concepts } } .-1 } |
| } |
| |
| int arr[4]; |
| |
| void |
| test3 (A &b, B c) |
| { |
| auto [ d, e, f ] = arr; // { dg-error "only 3 names provided" } |
| // { dg-message "while 'int .4.' decomposes into 4 elements" "" { target *-*-* } .-1 } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-2 } |
| auto & [ g, h, i, j, k ] = arr; // { dg-error "5 names provided" } |
| // { dg-message "while 'int .4.' decomposes into 4 elements" "" { target *-*-* } .-1 } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-2 } |
| auto [ l, m ] = b; // { dg-error "only 2 names provided" } |
| // { dg-message "while 'A' decomposes into 3 elements" "" { target *-*-* } .-1 } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-2 } |
| auto & [ n, o, p, q ] = b; // { dg-error "4 names provided" } |
| // { dg-message "while 'A' decomposes into 3 elements" "" { target *-*-* } .-1 } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-2 } |
| auto [] { c }; // { dg-error "empty structured binding declaration" } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-1 } |
| auto [ r, s ] = c; // { dg-error "2 names provided" } |
| // { dg-message "while 'B' decomposes into 1 element" "" { target *-*-* } .-1 } |
| // { dg-warning "structured bindings only available with '-std=c..17' or '-std=gnu..17'" "" { target c++14_down } .-2 } |
| } |
