13 lines
544 B
Rust
13 lines
544 B
Rust
//@compile-flags: -Zmiri-permissive-provenance
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#![feature(strict_provenance)]
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// If we have only exposed read-only pointers, doing a write through a wildcard ptr should fail.
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fn main() {
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let mut x = 0;
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let _fool = &mut x as *mut i32; // this would have fooled the old untagged pointer logic
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let addr = (&x as *const i32).expose_addr();
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let ptr = std::ptr::from_exposed_addr_mut::<i32>(addr);
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unsafe { *ptr = 0 }; //~ ERROR: /write access using <wildcard> .* no exposed tags have suitable permission in the borrow stack/
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}
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