16 lines
374 B
Rust
16 lines
374 B
Rust
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#![feature(reentrant_lock)]
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use std::sync::ReentrantLock;
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use std::cell::Cell;
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// ReentrantLockGuard<Cell<i32>> must not be Sync, that would be unsound.
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fn test_sync<T: Sync>(_t: T) {}
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fn main()
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{
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let m = ReentrantLock::new(Cell::new(0i32));
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let guard = m.lock();
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test_sync(guard);
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//~^ ERROR `Cell<i32>` cannot be shared between threads safely [E0277]
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}
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