18 lines
531 B
Rust
18 lines
531 B
Rust
use std::cell::UnsafeCell;
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fn main() {
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unsafe {
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let c = &UnsafeCell::new(UnsafeCell::new(0));
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let inner_uniq = &mut *c.get();
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// stack: [c: SharedReadWrite, inner_uniq: Unique]
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let inner_shr = &*inner_uniq; // adds a SharedReadWrite
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// stack: [c: SharedReadWrite, inner_uniq: Unique, inner_shr: SharedReadWrite]
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*c.get() = UnsafeCell::new(1); // invalidates inner_shr
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// stack: [c: SharedReadWrite]
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let _val = *inner_shr.get(); //~ ERROR borrow stack
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}
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}
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