mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-02 10:18:25 +00:00
23 lines
803 B
Rust
23 lines
803 B
Rust
#![allow(warnings)]
|
|
|
|
pub fn fail(x: Option<&(dyn Iterator<Item=()>+Send)>)
|
|
-> Option<&dyn Iterator<Item=()>> {
|
|
// This call used to trigger an LLVM assertion because the return
|
|
// slot had type "Option<&Iterator>"* instead of
|
|
// "Option<&(Iterator+Send)>"* -- but this now yields a
|
|
// compilation error and I'm not sure how to create a comparable
|
|
// test. To ensure that this PARTICULAR failure doesn't occur
|
|
// again, though, I've left this test here, so if this ever starts
|
|
// to compile again, we can adjust the test appropriately (clearly
|
|
// it should never ICE...). -nmatsakis
|
|
inner(x) //~ ERROR mismatched types
|
|
}
|
|
|
|
pub fn inner(x: Option<&(dyn Iterator<Item=()>+Send)>)
|
|
-> Option<&(dyn Iterator<Item=()>+Send)> {
|
|
x
|
|
}
|
|
|
|
|
|
fn main() {}
|