src/tools/clippy/tests/ui/redundant_allocation.rs

   1 #![warn(clippy::all)]
   2 #![allow(clippy::boxed_local, clippy::needless_pass_by_value)]
   3 #![allow(clippy::blacklisted_name, unused_variables, dead_code)]
   4 #![allow(unused_imports)]
   5
   6 pub struct MyStruct {}
   7
   8 pub struct SubT<T> {
   9     foo: T,
  10 }
  11
  12 pub enum MyEnum {
  13     One,
  14     Two,
  15 }
  16
  17 mod outer_box {
  18     use crate::MyEnum;
  19     use crate::MyStruct;
  20     use crate::SubT;
  21     use std::boxed::Box;
  22     use std::rc::Rc;
  23     use std::sync::Arc;
  24
  25     pub fn box_test6<T>(foo: Box<Rc<T>>) {}
  26
  27     pub fn box_test7<T>(foo: Box<Arc<T>>) {}
  28
  29     pub fn box_test8() -> Box<Rc<SubT<usize>>> {
  30         unimplemented!();
  31     }
  32
  33     pub fn box_test9<T>(foo: Box<Arc<T>>) -> Box<Arc<SubT<T>>> {
  34         unimplemented!();
  35     }
  36 }
  37
  38 mod outer_rc {
  39     use crate::MyEnum;
  40     use crate::MyStruct;
  41     use crate::SubT;
  42     use std::boxed::Box;
  43     use std::rc::Rc;
  44     use std::sync::Arc;
  45
  46     pub fn rc_test5(a: Rc<Box<bool>>) {}
  47
  48     pub fn rc_test7(a: Rc<Arc<bool>>) {}
  49
  50     pub fn rc_test8() -> Rc<Box<SubT<usize>>> {
  51         unimplemented!();
  52     }
  53
  54     pub fn rc_test9<T>(foo: Rc<Arc<T>>) -> Rc<Arc<SubT<T>>> {
  55         unimplemented!();
  56     }
  57 }
  58
  59 mod outer_arc {
  60     use crate::MyEnum;
  61     use crate::MyStruct;
  62     use crate::SubT;
  63     use std::boxed::Box;
  64     use std::rc::Rc;
  65     use std::sync::Arc;
  66
  67     pub fn arc_test5(a: Arc<Box<bool>>) {}
  68
  69     pub fn arc_test6(a: Arc<Rc<bool>>) {}
  70
  71     pub fn arc_test8() -> Arc<Box<SubT<usize>>> {
  72         unimplemented!();
  73     }
  74
  75     pub fn arc_test9<T>(foo: Arc<Rc<T>>) -> Arc<Rc<SubT<T>>> {
  76         unimplemented!();
  77     }
  78 }
  79
  80 fn main() {}