| // compile-flags:-Zprint-mono-items=eager |
| // compile-flags:-Zinline-in-all-cgus |
| |
| #![deny(dead_code)] |
| #![feature(coerce_unsized)] |
| #![feature(unsize)] |
| #![feature(start)] |
| |
| use std::marker::Unsize; |
| use std::ops::CoerceUnsized; |
| |
| trait Trait { |
| fn foo(&self); |
| } |
| |
| // Simple Case |
| impl Trait for bool { |
| fn foo(&self) {} |
| } |
| |
| impl Trait for char { |
| fn foo(&self) {} |
| } |
| |
| // Struct Field Case |
| struct Struct<T: ?Sized> { |
| _a: u32, |
| _b: i32, |
| _c: T |
| } |
| |
| impl Trait for f64 { |
| fn foo(&self) {} |
| } |
| |
| // Custom Coercion Case |
| impl Trait for u32 { |
| fn foo(&self) {} |
| } |
| |
| #[derive(Clone, Copy)] |
| struct Wrapper<T: ?Sized>(*const T); |
| |
| impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Wrapper<U>> for Wrapper<T> {} |
| |
| //~ MONO_ITEM fn unsizing::start[0] |
| #[start] |
| fn start(_: isize, _: *const *const u8) -> isize { |
| // simple case |
| let bool_sized = &true; |
| //~ MONO_ITEM fn core::ptr[0]::real_drop_in_place[0]<bool> @@ unsizing-cgu.0[Internal] |
| //~ MONO_ITEM fn unsizing::{{impl}}[0]::foo[0] |
| let _bool_unsized = bool_sized as &Trait; |
| |
| let char_sized = &'a'; |
| |
| //~ MONO_ITEM fn core::ptr[0]::real_drop_in_place[0]<char> @@ unsizing-cgu.0[Internal] |
| //~ MONO_ITEM fn unsizing::{{impl}}[1]::foo[0] |
| let _char_unsized = char_sized as &Trait; |
| |
| // struct field |
| let struct_sized = &Struct { |
| _a: 1, |
| _b: 2, |
| _c: 3.0f64 |
| }; |
| //~ MONO_ITEM fn core::ptr[0]::real_drop_in_place[0]<f64> @@ unsizing-cgu.0[Internal] |
| //~ MONO_ITEM fn unsizing::{{impl}}[2]::foo[0] |
| let _struct_unsized = struct_sized as &Struct<Trait>; |
| |
| // custom coercion |
| let wrapper_sized = Wrapper(&0u32); |
| //~ MONO_ITEM fn core::ptr[0]::real_drop_in_place[0]<u32> @@ unsizing-cgu.0[Internal] |
| //~ MONO_ITEM fn unsizing::{{impl}}[3]::foo[0] |
| let _wrapper_sized = wrapper_sized as Wrapper<Trait>; |
| |
| 0 |
| } |