rust/tests/ui/lto/lto-still-runs-thread-dtors.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

33 lines
515 B
Rust

//@ run-pass
//@ compile-flags: -C lto
//@ no-prefer-dynamic
//@ needs-threads
use std::thread;
static mut HIT: usize = 0;
thread_local!(static A: Foo = Foo);
struct Foo;
impl Drop for Foo {
fn drop(&mut self) {
unsafe {
HIT += 1;
}
}
}
fn main() {
unsafe {
assert_eq!(HIT, 0);
thread::spawn(|| {
assert_eq!(HIT, 0);
A.with(|_| ());
assert_eq!(HIT, 0);
}).join().unwrap();
assert_eq!(HIT, 1);
}
}