Fix 20.1 Miri unsafe code section #4401
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Fixes rust-lang#4338 Wrong concept in subsection "Using Miri to check unsafe code" of section "20.1. Unsafe Rust" This is a followup to PR rust-lang#4062 This PR adds a working example of using Miri where the code will compile and run without warnings or errors, but with undefined behavior while it runs. After running it through Miri though it correctly identifies the data race. Feedback welcome on matching the text to the books style. Or if anyone wants to collaborate on other examples of Miri output.
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Fixes #4338 Wrong concept in subsection "Using Miri to check unsafe code" of section "20.1. Unsafe Rust"
This is a followup to PR #4062
This PR adds a working example of using Miri where the code will compile and run without warnings or errors, but with undefined behavior while it runs. After running it through Miri though it correctly identifies the data race.
Feedback welcome on matching the text to the books style. Or if anyone wants to collaborate on other examples of Miri output.