diff options
Diffstat (limited to 'src/test/ui/impl-trait/lifetimes.rs')
-rw-r--r-- | src/test/ui/impl-trait/lifetimes.rs | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/src/test/ui/impl-trait/lifetimes.rs b/src/test/ui/impl-trait/lifetimes.rs deleted file mode 100644 index 9a9843375..000000000 --- a/src/test/ui/impl-trait/lifetimes.rs +++ /dev/null @@ -1,123 +0,0 @@ -// run-pass - -#![allow(warnings)] -#![feature(generators)] - -use std::fmt::Debug; - -fn any_lifetime<'a>() -> &'a u32 { &5 } - -fn static_lifetime() -> &'static u32 { &5 } - -fn any_lifetime_as_static_impl_trait() -> impl Debug { - any_lifetime() -} - -fn lifetimes_as_static_impl_trait() -> impl Debug { - static_lifetime() -} - -fn no_params_or_lifetimes_is_static() -> impl Debug + 'static { - lifetimes_as_static_impl_trait() -} - -fn static_input_type_is_static<T: Debug + 'static>(x: T) -> impl Debug + 'static { x } - -fn type_outlives_reference_lifetime<'a, T: Debug>(x: &'a T) -> impl Debug + 'a { x } -fn type_outlives_reference_lifetime_elided<T: Debug>(x: &T) -> impl Debug + '_ { x } - -trait SingleRegionTrait<'a> {} -impl<'a> SingleRegionTrait<'a> for u32 {} -impl<'a> SingleRegionTrait<'a> for &'a u32 {} -struct SingleRegionStruct<'a>(&'a u32); - -fn simple_type_hrtb<'b>() -> impl for<'a> SingleRegionTrait<'a> { 5 } -fn elision_single_region_trait(x: &u32) -> impl SingleRegionTrait { x } -fn elision_single_region_struct(x: SingleRegionStruct) -> impl Into<SingleRegionStruct> { x } - -fn closure_hrtb() -> impl for<'a> Fn(&'a u32) { |_| () } -fn closure_hr_elided() -> impl Fn(&u32) { |_| () } -fn closure_hr_elided_return() -> impl Fn(&u32) -> &u32 { |x| x } -fn closure_pass_through_elided_return(x: impl Fn(&u32) -> &u32) -> impl Fn(&u32) -> &u32 { x } -fn closure_pass_through_reference_elided(x: &impl Fn(&u32) -> &u32) -> &impl Fn(&u32) -> &u32 { x } - -fn nested_lifetime<'a>(input: &'a str) - -> impl Iterator<Item = impl Iterator<Item = i32> + 'a> + 'a -{ - input.lines().map(|line| { - line.split_whitespace().map(|cell| cell.parse().unwrap()) - }) -} - -fn pass_through_elision(x: &u32) -> impl Into<&u32> { x } -fn pass_through_elision_with_fn_ptr(x: &fn(&u32) -> &u32) -> impl Into<&fn(&u32) -> &u32> { x } - -fn pass_through_elision_with_fn_path<T: Fn(&u32) -> &u32>( - x: &T -) -> &impl Fn(&u32) -> &u32 { x } - -fn foo(x: &impl Debug) -> &impl Debug { x } -fn foo_explicit_lifetime<'a>(x: &'a impl Debug) -> &'a impl Debug { x } -fn foo_explicit_arg<T: Debug>(x: &T) -> &impl Debug { x } - -fn mixed_lifetimes<'a>() -> impl for<'b> Fn(&'b &'a u32) { |_| () } -fn mixed_as_static() -> impl Fn(&'static &'static u32) { mixed_lifetimes() } - -trait MultiRegionTrait<'a, 'b>: Debug {} - -#[derive(Debug)] -struct MultiRegionStruct<'a, 'b>(&'a u32, &'b u32); -impl<'a, 'b> MultiRegionTrait<'a, 'b> for MultiRegionStruct<'a, 'b> {} - -#[derive(Debug)] -struct NoRegionStruct; -impl<'a, 'b> MultiRegionTrait<'a, 'b> for NoRegionStruct {} - -fn finds_least_region<'a: 'b, 'b>(x: &'a u32, y: &'b u32) -> impl MultiRegionTrait<'a, 'b> { - MultiRegionStruct(x, y) -} - -fn finds_explicit_bound<'a: 'b, 'b> - (x: &'a u32, y: &'b u32) -> impl MultiRegionTrait<'a, 'b> + 'b -{ - MultiRegionStruct(x, y) -} - -fn finds_explicit_bound_even_without_least_region<'a, 'b> - (x: &'a u32, y: &'b u32) -> impl MultiRegionTrait<'a, 'b> + 'b -{ - NoRegionStruct -} - -/* FIXME: `impl Trait<'a> + 'b` should live as long as 'b, even if 'b outlives 'a -fn outlives_bounds_even_with_contained_regions<'a, 'b> - (x: &'a u32, y: &'b u32) -> impl Debug + 'b -{ - finds_explicit_bound_even_without_least_region(x, y) -} -*/ - -fn unnamed_lifetimes_arent_contained_in_impl_trait_and_will_unify<'a, 'b> - (x: &'a u32, y: &'b u32) -> impl Debug -{ - fn deref<'lt>(x: &'lt u32) -> impl Debug { *x } - - if true { deref(x) } else { deref(y) } -} - -fn can_add_region_bound_to_static_type<'a, 'b>(_: &'a u32) -> impl Debug + 'a { 5 } - -struct MyVec(Vec<Vec<u8>>); - -impl<'unnecessary_lifetime> MyVec { - fn iter_doesnt_capture_unnecessary_lifetime<'s>(&'s self) -> impl Iterator<Item = &'s u8> { - self.0.iter().flat_map(|inner_vec| inner_vec.iter()) - } - - fn generator_doesnt_capture_unnecessary_lifetime<'s: 's>() -> impl Sized { - || yield - } -} - - -fn main() {} |