src/test/ui/stability-attribute/missing-const-stability.rs

   1 #![feature(staged_api)]
   2 #![feature(const_trait_impl)]
   3 #![stable(feature = "stable", since = "1.0.0")]
   4
   5 #[stable(feature = "stable", since = "1.0.0")]
   6 pub const fn foo() {} //~ ERROR function has missing const stability attribute
   7
   8 #[unstable(feature = "unstable", issue = "none")]
   9 pub const fn bar() {} // ok because function is unstable
  10
  11 #[stable(feature = "stable", since = "1.0.0")]
  12 pub struct Foo;
  13 impl Foo {
  14     #[stable(feature = "stable", since = "1.0.0")]
  15     pub const fn foo() {} //~ ERROR associated function has missing const stability attribute
  16
  17     #[unstable(feature = "unstable", issue = "none")]
  18     pub const fn bar() {} // ok because function is unstable
  19 }
  20
  21 #[stable(feature = "stable", since = "1.0.0")]
  22 #[const_trait]
  23 pub trait Bar {
  24     #[stable(feature = "stable", since = "1.0.0")]
  25     fn fun();
  26 }
  27 #[stable(feature = "stable", since = "1.0.0")]
  28 impl const Bar for Foo {
  29     //~^ ERROR implementation has missing const stability attribute
  30     fn fun() {}
  31 }
  32
  33 fn main() {}