22 lines
885 B
Rust
22 lines
885 B
Rust
// 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
|
|
}
|