| // Test for #127971, which causes an ice bug: only `variances_of` returns `&[ty::Variance]` |
| // |
| //@ compile-flags: -Z threads=16 |
| //@ compare-output-by-lines |
| |
| use std::fmt::Debug; |
| |
| fn elided(_: &impl Copy + 'a) -> _ { x } |
| //~^ ERROR ambiguous `+` in a type |
| //~| ERROR use of undeclared lifetime name `'a` |
| //~| ERROR the placeholder `_` is not allowed within types on item signatures for return types |
| |
| fn foo<'a>(_: &impl Copy + 'a) -> impl 'b + 'a { x } |
| //~^ ERROR ambiguous `+` in a type |
| //~| ERROR at least one trait must be specified |
| //~| ERROR use of undeclared lifetime name `'b` |
| |
| fn x<'b>(_: &'a impl Copy + 'a) -> Box<dyn 'b> { Box::u32(x) } |
| //~^ ERROR ambiguous `+` in a type |
| //~| ERROR use of undeclared lifetime name `'a` |
| //~| ERROR use of undeclared lifetime name `'a` |
| //~| ERROR at least one trait is required for an object type |
| //~| ERROR no associated function or constant named `u32` found for struct `Box<_, _>` in the current scope |
| |
| fn main() {} |
