rust/tests/codegen-units/item-collection/trait-method-as-argument.rs

60 lines
2.1 KiB
Rust

//@ compile-flags:-Zprint-mono-items=eager -Zinline-mir=no
#![deny(dead_code)]
#![feature(start)]
trait Trait : Sized {
fn foo(self) -> Self { self }
}
impl Trait for u32 {
fn foo(self) -> u32 { self }
}
impl Trait for char {
}
fn take_foo_once<T, F: FnOnce(T) -> T>(f: F, arg: T) -> T {
(f)(arg)
}
fn take_foo<T, F: Fn(T) -> T>(f: F, arg: T) -> T {
(f)(arg)
}
fn take_foo_mut<T, F: FnMut(T) -> T>(mut f: F, arg: T) -> T {
(f)(arg)
}
//~ MONO_ITEM fn start
#[start]
fn start(_: isize, _: *const *const u8) -> isize {
//~ MONO_ITEM fn take_foo_once::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
//~ MONO_ITEM fn <u32 as Trait>::foo
//~ MONO_ITEM fn <fn(u32) -> u32 {<u32 as Trait>::foo} as std::ops::FnOnce<(u32,)>>::call_once - shim(fn(u32) -> u32 {<u32 as Trait>::foo})
take_foo_once(Trait::foo, 0u32);
//~ MONO_ITEM fn take_foo_once::<char, fn(char) -> char {<char as Trait>::foo}>
//~ MONO_ITEM fn <char as Trait>::foo
//~ MONO_ITEM fn <fn(char) -> char {<char as Trait>::foo} as std::ops::FnOnce<(char,)>>::call_once - shim(fn(char) -> char {<char as Trait>::foo})
take_foo_once(Trait::foo, 'c');
//~ MONO_ITEM fn take_foo::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
//~ MONO_ITEM fn <fn(u32) -> u32 {<u32 as Trait>::foo} as std::ops::Fn<(u32,)>>::call - shim(fn(u32) -> u32 {<u32 as Trait>::foo})
take_foo(Trait::foo, 0u32);
//~ MONO_ITEM fn take_foo::<char, fn(char) -> char {<char as Trait>::foo}>
//~ MONO_ITEM fn <fn(char) -> char {<char as Trait>::foo} as std::ops::Fn<(char,)>>::call - shim(fn(char) -> char {<char as Trait>::foo})
take_foo(Trait::foo, 'c');
//~ MONO_ITEM fn take_foo_mut::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
//~ MONO_ITEM fn <fn(u32) -> u32 {<u32 as Trait>::foo} as std::ops::FnMut<(u32,)>>::call_mut - shim(fn(u32) -> u32 {<u32 as Trait>::foo})
take_foo_mut(Trait::foo, 0u32);
//~ MONO_ITEM fn take_foo_mut::<char, fn(char) -> char {<char as Trait>::foo}>
//~ MONO_ITEM fn <fn(char) -> char {<char as Trait>::foo} as std::ops::FnMut<(char,)>>::call_mut - shim(fn(char) -> char {<char as Trait>::foo})
take_foo_mut(Trait::foo, 'c');
0
}