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| author | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-05 09:13:28 +0100 |
|---|---|---|
| committer | Albert Larsan <74931857+albertlarsan68@users.noreply.github.com> | 2023-01-11 09:32:08 +0000 |
| commit | cf2dff2b1e3fa55fa5415d524200070d0d7aacfe (patch) | |
| tree | 40a88d9a46aaf3e8870676eb2538378b75a263eb /tests/ui/threads-sendsync/tls-init-on-init.rs | |
| parent | ca855e6e42787ecd062d81d53336fe6788ef51a9 (diff) | |
| download | rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.tar.gz rust-cf2dff2b1e3fa55fa5415d524200070d0d7aacfe.zip | |
Move /src/test to /tests
Diffstat (limited to 'tests/ui/threads-sendsync/tls-init-on-init.rs')
| -rw-r--r-- | tests/ui/threads-sendsync/tls-init-on-init.rs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tests/ui/threads-sendsync/tls-init-on-init.rs b/tests/ui/threads-sendsync/tls-init-on-init.rs new file mode 100644 index 00000000000..193c1815105 --- /dev/null +++ b/tests/ui/threads-sendsync/tls-init-on-init.rs @@ -0,0 +1,44 @@ +// run-pass +#![allow(stable_features)] + +// ignore-emscripten no threads support + +#![feature(thread_local_try_with)] + +use std::thread; +use std::sync::atomic::{AtomicUsize, Ordering}; + +struct Foo { cnt: usize } + +thread_local!(static FOO: Foo = Foo::init()); + +static CNT: AtomicUsize = AtomicUsize::new(0); + +impl Foo { + fn init() -> Foo { + let cnt = CNT.fetch_add(1, Ordering::SeqCst); + if cnt == 0 { + FOO.with(|_| {}); + } + Foo { cnt: cnt } + } +} + +impl Drop for Foo { + fn drop(&mut self) { + if self.cnt == 1 { + FOO.with(|foo| assert_eq!(foo.cnt, 0)); + } else { + assert_eq!(self.cnt, 0); + if FOO.try_with(|_| ()).is_ok() { + panic!("should not be in valid state"); + } + } + } +} + +fn main() { + thread::spawn(|| { + FOO.with(|_| {}); + }).join().unwrap(); +} |
