diff options
Diffstat (limited to 'src/test/ui/coercion/coerce-issue-49593-box-never.rs')
-rw-r--r-- | src/test/ui/coercion/coerce-issue-49593-box-never.rs | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/src/test/ui/coercion/coerce-issue-49593-box-never.rs b/src/test/ui/coercion/coerce-issue-49593-box-never.rs deleted file mode 100644 index 16efb65ac..000000000 --- a/src/test/ui/coercion/coerce-issue-49593-box-never.rs +++ /dev/null @@ -1,58 +0,0 @@ -// revisions: nofallback fallback -// ignore-windows - the number of `Error` impls is platform-dependent -//[fallback] check-pass -//[nofallback] check-fail - -#![feature(never_type)] -#![cfg_attr(fallback, feature(never_type_fallback))] -#![allow(unreachable_code)] - -use std::error::Error; -use std::mem; - -fn raw_ptr_box<T>(t: T) -> *mut T { - panic!() -} - -fn foo(x: !) -> Box<dyn Error> { - /* *mut $0 is coerced to Box<dyn Error> here */ Box::<_ /* ! */>::new(x) - //[nofallback]~^ ERROR trait bound `(): std::error::Error` is not satisfied -} - -fn foo_raw_ptr(x: !) -> *mut dyn Error { - /* *mut $0 is coerced to *mut Error here */ raw_ptr_box::<_ /* ! */>(x) - //[nofallback]~^ ERROR trait bound `(): std::error::Error` is not satisfied -} - -fn no_coercion(d: *mut dyn Error) -> *mut dyn Error { - /* an unsize coercion won't compile here, and it is indeed not used - because there is nothing requiring the _ to be Sized */ - d as *mut _ -} - -trait Xyz {} -struct S; -struct T; -impl Xyz for S {} -impl Xyz for T {} - -fn foo_no_never() { - let mut x /* : Option<S> */ = None; - let mut first_iter = false; - loop { - if !first_iter { - let y: Box<dyn Xyz> - = /* Box<$0> is coerced to Box<Xyz> here */ Box::new(x.unwrap()); - } - - x = Some(S); - first_iter = true; - } - - let mut y : Option<S> = None; - // assert types are equal - mem::swap(&mut x, &mut y); -} - -fn main() { -} |