File: feature-gate-auto-traits.rs

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// Test that default and negative trait implementations are gated by
// `auto_traits` feature gate

struct DummyStruct;

auto trait AutoDummyTrait {}
//~^ ERROR auto traits are experimental and possibly buggy

impl !AutoDummyTrait for DummyStruct {}
//~^ ERROR negative trait bounds are not fully implemented; use marker types for now

fn main() {}