| // https://github.com/rust-lang/rust/issues/87199 |
| // Regression test for issue #87199, where attempting to relax a bound |
| // other than the only supported `?Sized` would still cause the compiler |
| // to assume that the `Sized` bound was relaxed. |
| |
| //@ check-fail |
| |
| // Check that these function definitions only emit warnings, not errors |
| fn arg<T: ?Send>(_: T) {} |
| //~^ ERROR: bound modifier `?` can only be applied to `Sized` |
| fn ref_arg<T: ?Send>(_: &T) {} |
| //~^ ERROR: bound modifier `?` can only be applied to `Sized` |
| fn ret() -> impl Iterator<Item = ()> + ?Send { std::iter::empty() } |
| //~^ ERROR: bound modifier `?` can only be applied to `Sized` |
| //~| ERROR: bound modifier `?` can only be applied to `Sized` |
| |
| // Check that there's no `?Sized` relaxation! |
| fn main() { |
| ref_arg::<i32>(&5); |
| ref_arg::<[i32]>(&[5]); |
| //~^ ERROR the size for values of type `[i32]` cannot be known |
| } |
