rust/tests/ui/coherence/coherence-error-suppression.rs

// check that error types in coherence do not cause error cascades.

trait Foo {}

impl Foo for i8 {}
impl Foo for i16 {}
impl Foo for i32 {}
impl Foo for i64 {}
impl Foo for DoesNotExist {}
//~^ ERROR E0412
impl Foo for u8 {}
impl Foo for u16 {}
impl Foo for u32 {}
impl Foo for u64 {}

fn main() {}
coherence: skip impls with an erroneous trait ref Impls with a erroneous trait ref are already ignored in the first part of coherence, so ignore them in the second part too. This avoids cascading coherence errors when 1 impl of a trait has an error. 2016-11-13 16:54:39 +00:00			`// check that error types in coherence do not cause error cascades.`

			`trait Foo {}`

			`impl Foo for i8 {}`
			`impl Foo for i16 {}`
			`impl Foo for i32 {}`
			`impl Foo for i64 {}`
Unify tests Implement compile tests as variants of existing tests 2018-12-28 23:11:13 +00:00			`impl Foo for DoesNotExist {}`
Stabilize the `re_rebalance_coherence` feature 2019-10-26 15:28:02 +00:00			`//~^ ERROR E0412`
coherence: skip impls with an erroneous trait ref Impls with a erroneous trait ref are already ignored in the first part of coherence, so ignore them in the second part too. This avoids cascading coherence errors when 1 impl of a trait has an error. 2016-11-13 16:54:39 +00:00			`impl Foo for u8 {}`
			`impl Foo for u16 {}`
			`impl Foo for u32 {}`
			`impl Foo for u64 {}`

			`fn main() {}`