src/test/codegen-units/item-collection/trait-method-as-argument.rs

   1 // ignore-tidy-linelength
   2 // compile-flags:-Zprint-mono-items=eager
   3
   4 #![deny(dead_code)]
   5 #![feature(start)]
   6
   7 trait Trait : Sized {
   8     fn foo(self) -> Self { self }
   9 }
  10
  11 impl Trait for u32 {
  12     fn foo(self) -> u32 { self }
  13 }
  14
  15 impl Trait for char {
  16 }
  17
  18 fn take_foo_once<T, F: FnOnce(T) -> T>(f: F, arg: T) -> T {
  19     (f)(arg)
  20 }
  21
  22 fn take_foo<T, F: Fn(T) -> T>(f: F, arg: T) -> T {
  23     (f)(arg)
  24 }
  25
  26 fn take_foo_mut<T, F: FnMut(T) -> T>(mut f: F, arg: T) -> T {
  27     (f)(arg)
  28 }
  29
  30 //~ MONO_ITEM fn start
  31 #[start]
  32 fn start(_: isize, _: *const *const u8) -> isize {
  33     //~ MONO_ITEM fn take_foo_once::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
  34     //~ MONO_ITEM fn <u32 as Trait>::foo
  35     //~ 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})
  36     take_foo_once(Trait::foo, 0u32);
  37
  38     //~ MONO_ITEM fn take_foo_once::<char, fn(char) -> char {<char as Trait>::foo}>
  39     //~ MONO_ITEM fn <char as Trait>::foo
  40     //~ 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})
  41     take_foo_once(Trait::foo, 'c');
  42
  43     //~ MONO_ITEM fn take_foo::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
  44     //~ MONO_ITEM fn <fn(u32) -> u32 {<u32 as Trait>::foo} as std::ops::Fn<(u32,)>>::call - shim(fn(u32) -> u32 {<u32 as Trait>::foo})
  45     take_foo(Trait::foo, 0u32);
  46
  47     //~ MONO_ITEM fn take_foo::<char, fn(char) -> char {<char as Trait>::foo}>
  48     //~ MONO_ITEM fn <fn(char) -> char {<char as Trait>::foo} as std::ops::Fn<(char,)>>::call - shim(fn(char) -> char {<char as Trait>::foo})
  49     take_foo(Trait::foo, 'c');
  50
  51     //~ MONO_ITEM fn take_foo_mut::<u32, fn(u32) -> u32 {<u32 as Trait>::foo}>
  52     //~ 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})
  53     take_foo_mut(Trait::foo, 0u32);
  54
  55     //~ MONO_ITEM fn take_foo_mut::<char, fn(char) -> char {<char as Trait>::foo}>
  56     //~ 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})
  57     take_foo_mut(Trait::foo, 'c');
  58
  59     0
  60 }