rust/tests/ui/macros/macro-with-braces-in-expr-position.rs
Alex Crichton 75fa9f6dec compiletest: Add a //@ needs-threads directive
This commit is extracted from #122036 and adds a new directive to the
`compiletest` test runner, `//@ needs-threads`. This is intended to
capture the need that a target must implement threading to execute a
specific test, typically one that uses `std::thread`. This is primarily
done for WebAssembly targets which currently do not have threads by
default. This enables transitioning a lot of `//@ ignore-wasm*`-style
ignores into a more self-documenting `//@ needs-threads` directive.
Additionally the `wasm32-wasi-preview1-threads` target, for example,
does actually have threads, but isn't tested in CI at this time. This
change enables running these tests for that target, but not other wasm
targets.
2024-03-06 12:35:07 -08:00

23 lines
350 B
Rust

//@ run-pass
#![allow(unused_must_use)]
//@ needs-threads
use std::thread;
macro_rules! expr { ($e: expr) => { $e } }
macro_rules! spawn {
($($code: tt)*) => {
expr!(thread::spawn(move|| {$($code)*}).join())
}
}
pub fn main() {
spawn! {
println!("stmt");
};
let _ = spawn! {
println!("expr");
};
}