| #![feature(coroutines)] |
| |
| // `foo` attempts to dereference `""`, which results in an error being reported. Later, the |
| // coroutine transform for `foo` then produces a union which contains a `str` type - unions should |
| // not contain unsized types, but this is okay because an error has been reported already. |
| // When const propagation happens later in compilation, it attempts to compute the layout of the |
| // coroutine (as part of checking whether something can be const propagated) and in turn attempts |
| // to compute the layout of `str` in the context of a union - where this caused an ICE. This test |
| // makes sure that doesn't happen again. |
| |
| fn foo() { |
| let _y = static || { |
| let x = &mut 0; |
| *{ |
| yield; |
| x |
| } += match { *"" }.len() { |
| //~^ ERROR cannot move a value of type `str` [E0161] |
| //~^^ ERROR cannot move out of a shared reference [E0507] |
| _ => 0, |
| }; |
| }; |
| } |
| |
| fn main() { |
| foo() |
| } |
