| // C++26 P1306R5 - Expansion statements |
| // { dg-do compile { target c++11 } } |
| |
| struct S { int y; } z[3]; |
| |
| template <int N> |
| void |
| foo () |
| { |
| template for (static auto [ a ] : {}) // { dg-error "for-range-declaration cannot be 'static'" } |
| ; // { dg-error "structured binding declaration can be 'static' only in" "" { target c++17_down } .-1 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-2 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-3 } |
| template for (thread_local auto [ a ] : {}) // { dg-error "for-range-declaration cannot be 'thread_local'" } |
| ; // { dg-error "structured binding declaration can be 'thread_local' only in" "" { target c++17_down } .-1 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-2 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-3 } |
| template for (__thread auto [ a ] : {}) // { dg-error "for-range-declaration cannot be '__thread'" } |
| ; // { dg-error "function-scope 'structured binding' implicitly auto and declared '__thread'" "" { target *-*-* } .-1 } |
| // { dg-error "structured binding declaration can be '__thread' only in" "" { target c++17_down } .-2 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-3 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-4 } |
| template for (register auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'register'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (extern auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'extern'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (mutable auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'mutable'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (virtual auto [ a ] : {}) // { dg-error "'virtual' outside class declaration" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (explicit auto [ a ] : {}) // { dg-error "'explicit' outside class declaration" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (friend auto [ a ] : {}) // { dg-error "'friend' used outside of class" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (typedef auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'typedef'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| #if __cplusplus >= 202002L |
| template for (consteval auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'consteval'" "" { target c++20 } } |
| ; // { dg-error "'template for' only available with" "" { target { c++20 && c++23_down } } .-1 } |
| template for (constinit auto [ a ] : {}) // { dg-error "for-range-declaration cannot be 'constinit'" "" { target c++20 } } |
| ; // { dg-error "'template for' only available with" "" { target { c++20 && c++23_down } } .-1 } |
| #endif |
| template for (inline auto [ a ] : {}) // { dg-error "structured binding declaration cannot be 'inline'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| } |
| |
| template <int N> |
| void |
| bar () |
| { |
| template for (static auto [ a ] : z) // { dg-error "for-range-declaration cannot be 'static'" } |
| ; // { dg-error "structured binding declaration can be 'static' only in" "" { target c++17_down } .-1 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-2 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-3 } |
| template for (thread_local auto [ a ] : z) // { dg-error "for-range-declaration cannot be 'thread_local'" } |
| ; // { dg-error "structured binding declaration can be 'thread_local' only in" "" { target c++17_down } .-1 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-2 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-3 } |
| template for (__thread auto [ a ] : z) // { dg-error "for-range-declaration cannot be '__thread'" } |
| ; // { dg-error "function-scope 'structured binding' implicitly auto and declared '__thread'" "" { target *-*-* } .-1 } |
| // { dg-error "structured binding declaration can be '__thread' only in" "" { target c++17_down } .-2 } |
| // { dg-error "structured bindings only available with" "" { target c++14_down } .-3 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-4 } |
| template for (register auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'register'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (extern auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'extern'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (mutable auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'mutable'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (virtual auto [ a ] : z) // { dg-error "'virtual' outside class declaration" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (explicit auto [ a ] : z) // { dg-error "'explicit' outside class declaration" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (friend auto [ a ] : z) // { dg-error "'friend' used outside of class" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| template for (typedef auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'typedef'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| #if __cplusplus >= 202002L |
| template for (consteval auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'consteval'" "" { target c++20 } } |
| ; // { dg-error "'template for' only available with" "" { target { c++20 && c++23_down } } .-1 } |
| template for (constinit auto [ a ] : z) // { dg-error "for-range-declaration cannot be 'constinit'" "" { target c++20 } } |
| ; // { dg-error "'template for' only available with" "" { target { c++20 && c++23_down } } .-1 } |
| #endif |
| template for (inline auto [ a ] : z) // { dg-error "structured binding declaration cannot be 'inline'" } |
| ; // { dg-error "structured bindings only available with" "" { target c++14_down } .-1 } |
| // { dg-error "'template for' only available with" "" { target c++23_down } .-2 } |
| } |
| |
| void |
| baz () |
| { |
| foo <0> (); |
| bar <0> (); |
| } |
