#![allow(unused)] #![warn(clippy::impl_trait_in_params)] //@no-rustfix pub trait Trait {} pub trait AnotherTrait<T> {} // Should warn pub fn a(_: impl Trait) {} //~^ ERROR: `impl Trait` used as a function parameter pub fn c<C: Trait>(_: C, _: impl Trait) {} //~^ ERROR: `impl Trait` used as a function parameter // Shouldn't warn pub fn b<B: Trait>(_: B) {} fn e<T: AnotherTrait<u32>>(_: T) {} fn d(_: impl AnotherTrait<u32>) {} //------ IMPLS pub trait Public { // See test in ui-toml for a case where avoid-breaking-exported-api is set to false fn t(_: impl Trait); fn tt<T: Trait>(_: T) {} } trait Private { // This shouldn't lint fn t(_: impl Trait); fn tt<T: Trait>(_: T) {} } struct S; impl S { pub fn h(_: impl Trait) {} //~ ERROR: `impl Trait` used as a function parameter fn i(_: impl Trait) {} pub fn j<J: Trait>(_: J) {} pub fn k<K: AnotherTrait<u32>>(_: K, _: impl AnotherTrait<u32>) {} //~ ERROR: `impl Trait` used as a function parameter } // Trying with traits impl Public for S { fn t(_: impl Trait) {} } fn main() {}