18 lines
712 B
Rust
18 lines
712 B
Rust
// Make sure we find these even with many checks disabled.
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//@compile-flags: -Zmiri-disable-alignment-check -Zmiri-disable-stacked-borrows -Zmiri-disable-validation
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// Test what happens when we overwrite parts of a pointer.
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// Also see <https://github.com/rust-lang/miri/issues/2181>.
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fn main() {
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let mut p = &42;
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unsafe {
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let ptr: *mut _ = &mut p;
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*(ptr as *mut u8) = 123; // if we ever support 8 bit pointers, this is gonna cause
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// "attempted to interpret some raw bytes as a pointer address" instead of
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// "attempted to read undefined bytes"
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}
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let x = *p; //~ ERROR: this operation requires initialized memory
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panic!("this should never print: {}", x);
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}
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