mirror of https://github.com/rust-lang/rust
82 lines
1.8 KiB
Rust
82 lines
1.8 KiB
Rust
//@ compile-flags:-Zprint-mono-items=eager
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//@ compile-flags:-Zinline-in-all-cgus
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//@ compile-flags:-Zmir-opt-level=0
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#![deny(dead_code)]
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#![feature(coerce_unsized)]
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#![feature(unsize)]
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#![feature(start)]
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use std::marker::Unsize;
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use std::ops::CoerceUnsized;
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trait Trait {
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fn foo(&self);
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}
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// Simple Case
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impl Trait for bool {
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fn foo(&self) {}
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}
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impl Trait for char {
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fn foo(&self) {}
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}
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// Struct Field Case
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struct Struct<T: ?Sized> {
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_a: u32,
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_b: i32,
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_c: T
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}
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impl Trait for f64 {
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fn foo(&self) {}
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}
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// Custom Coercion Case
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impl Trait for u32 {
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fn foo(&self) {}
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}
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#[derive(Clone, Copy)]
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struct Wrapper<T: ?Sized>(#[allow(dead_code)] *const T);
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impl<T: ?Sized + Unsize<U>, U: ?Sized> CoerceUnsized<Wrapper<U>> for Wrapper<T> {}
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//~ MONO_ITEM fn start
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#[start]
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fn start(_: isize, _: *const *const u8) -> isize {
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// simple case
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let bool_sized = &true;
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//~ MONO_ITEM fn std::ptr::drop_in_place::<bool> - shim(None) @@ unsizing-cgu.0[Internal]
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//~ MONO_ITEM fn <bool as Trait>::foo
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let _bool_unsized = bool_sized as &Trait;
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let char_sized = &'a';
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//~ MONO_ITEM fn std::ptr::drop_in_place::<char> - shim(None) @@ unsizing-cgu.0[Internal]
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//~ MONO_ITEM fn <char as Trait>::foo
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let _char_unsized = char_sized as &Trait;
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// struct field
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let struct_sized = &Struct {
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_a: 1,
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_b: 2,
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_c: 3.0f64
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};
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//~ MONO_ITEM fn std::ptr::drop_in_place::<f64> - shim(None) @@ unsizing-cgu.0[Internal]
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//~ MONO_ITEM fn <f64 as Trait>::foo
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let _struct_unsized = struct_sized as &Struct<Trait>;
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// custom coercion
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let wrapper_sized = Wrapper(&0u32);
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//~ MONO_ITEM fn std::ptr::drop_in_place::<u32> - shim(None) @@ unsizing-cgu.0[Internal]
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//~ MONO_ITEM fn <u32 as Trait>::foo
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let _wrapper_sized = wrapper_sized as Wrapper<Trait>;
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false.foo();
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0
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}
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