mirror of https://github.com/rust-lang/rust
31 lines
546 B
Rust
31 lines
546 B
Rust
//@ run-pass
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//@ ignore-windows
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//@ needs-threads
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use std::cell::Cell;
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use std::fmt;
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use std::thread;
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struct Foo(Cell<isize>);
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impl fmt::Debug for Foo {
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fn fmt(&self, _fmt: &mut fmt::Formatter) -> fmt::Result {
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let Foo(ref f) = *self;
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assert_eq!(f.get(), 0);
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f.set(1);
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Ok(())
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}
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}
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pub fn main() {
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thread::spawn(move || {
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let mut f = Foo(Cell::new(0));
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println!("{:?}", f);
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let Foo(ref mut f) = f;
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assert_eq!(f.get(), 1);
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})
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.join()
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.ok()
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.unwrap();
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}
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