rust/tests/ui/feature-gates/feature-gate-auto-traits.rs

// 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 yet fully implemented; use marker types for now

fn main() {}
Add feature gate tests As part of the audit for #22820 the following feature gate tests have been added: * `negate_unsigned` * `on_unimplemented` * `optin_builtin_traits` * `plugin` * `rustc_attrs` * `slice_patterns` 2015-04-16 07:48:31 -05:00			`// Test that default and negative trait implementations are gated by`
Rename `optin_builtin_traits` to `auto_traits` They were originally called "opt-in, built-in traits" (OIBITs), but people realized that the name was too confusing and a mouthful, and so they were renamed to just "auto traits". The feature flag's name wasn't updated, though, so that's what this PR does. There are some other spots in the compiler that still refer to OIBITs, but I don't think changing those now is worth it since they are internal and not particularly relevant to this PR. Also see <https://rust-lang.zulipchat.com/#narrow/stream/131828-t-compiler/topic/opt-in.2C.20built-in.20traits.20(auto.20traits).20feature.20name>. 2020-11-22 21:54:31 -06:00			// `auto_traits` feature gate
Add feature gate tests As part of the audit for #22820 the following feature gate tests have been added: * `negate_unsigned` * `on_unimplemented` * `optin_builtin_traits` * `plugin` * `rustc_attrs` * `slice_patterns` 2015-04-16 07:48:31 -05:00
			`struct DummyStruct;`

Add tests for `auto trait`, fix parsing bug Now we can do the well formedness checks in the parser, yay! 2017-10-12 17:00:30 -05:00			`auto trait AutoDummyTrait {}`
			`//~^ ERROR auto traits are experimental and possibly buggy`

Make sure feature gate errors are recoverable (take 2) 2019-01-02 08:14:24 -06:00			`impl !AutoDummyTrait for DummyStruct {}`
Add feature gate tests As part of the audit for #22820 the following feature gate tests have been added: * `negate_unsigned` * `on_unimplemented` * `optin_builtin_traits` * `plugin` * `rustc_attrs` * `slice_patterns` 2015-04-16 07:48:31 -05:00			`//~^ ERROR negative trait bounds are not yet fully implemented; use marker types for now`

			`fn main() {}`