mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
22 lines
415 B
Rust
22 lines
415 B
Rust
struct Foo {
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x: isize
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}
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impl Drop for Foo {
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fn drop(&mut self) {
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println!("drop {}", self.x);
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}
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}
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fn main() {
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let mut ptr: Box<_> = Box::new(Foo { x: 0 });
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let mut test = |foo: &Foo| {
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println!("access {}", foo.x);
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ptr = Box::new(Foo { x: ptr.x + 1 });
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println!("access {}", foo.x);
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};
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test(&*ptr);
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//~^ ERROR: cannot borrow `*ptr` as immutable
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}
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