src/test/ui/invalid/invalid-rustc_legacy_const_generics-arguments.rs

   1 #![feature(rustc_attrs)]
   2
   3 #[rustc_legacy_const_generics(0)] //~ ERROR #[rustc_legacy_const_generics] must have one index for
   4 fn foo1() {}
   5
   6 #[rustc_legacy_const_generics(1)] //~ ERROR index exceeds number of arguments
   7 fn foo2<const X: usize>() {}
   8
   9 #[rustc_legacy_const_generics(2)] //~ ERROR index exceeds number of arguments
  10 fn foo3<const X: usize>(_: u8) {}
  11
  12 #[rustc_legacy_const_generics(a)] //~ ERROR arguments should be non-negative integers
  13 fn foo4<const X: usize>() {}
  14
  15 #[rustc_legacy_const_generics(1, a, 2, b)] //~ ERROR arguments should be non-negative integers
  16 fn foo5<const X: usize, const Y: usize, const Z: usize, const W: usize>() {}
  17
  18 #[rustc_legacy_const_generics(0)] //~ ERROR attribute should be applied to a function
  19 struct S;
  20
  21 #[rustc_legacy_const_generics(0usize)] //~ ERROR suffixed literals are not allowed in attributes
  22 fn foo6<const X: usize>() {}
  23
  24 extern {
  25     #[rustc_legacy_const_generics(1)] //~ ERROR attribute should be applied to a function
  26     fn foo7<const X: usize>(); //~ ERROR foreign items may not have const parameters
  27 }
  28
  29 #[rustc_legacy_const_generics(0)] //~ ERROR #[rustc_legacy_const_generics] functions must only have
  30 fn foo8<X>() {}
  31
  32 #[rustc_legacy_const_generics] //~ ERROR malformed `rustc_legacy_const_generics` attribute
  33 fn bar1() {}
  34
  35 #[rustc_legacy_const_generics = 1] //~ ERROR malformed `rustc_legacy_const_generics` attribute
  36 fn bar2() {}
  37
  38 fn main() {}