//@ aux-build:const-stability-attribute-implies.rs #![crate_type = "lib"] // Tests that despite the `const_foobar` feature being implied by now-stable feature `const_foo`, // if `const_foobar` isn't allowed in this crate then an error will be emitted. extern crate const_stability_attribute_implies; use const_stability_attribute_implies::{foo, foobar}; pub const fn bar() -> u32 { foo(); // no error - stable foobar(); //~ ERROR `foobar` is not yet stable as a const fn 0 } pub const VAR: u32 = bar();