tests/ui/traits/const-traits/mutually-exclusive-trait-bound-modifiers.rs


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#![feature(const_trait_impl)]

const fn maybe_const_maybe<T: [const] ?Sized>() {}
//~^ ERROR `[const]` trait not allowed with `?` trait polarity modifier

fn const_maybe<T: const ?Sized>() {}
//~^ ERROR `const` trait not allowed with `?` trait polarity modifier

const fn maybe_const_negative<T: [const] !Trait>() {}
//~^ ERROR `[const]` trait not allowed with `!` trait polarity modifier
//~| ERROR negative bounds are not supported

fn const_negative<T: const !Trait>() {}
//~^ ERROR `const` trait not allowed with `!` trait polarity modifier
//~| ERROR negative bounds are not supported

#[const_trait]
trait Trait {}

fn main() {}