25 lines
674 B
Plaintext
25 lines
674 B
Plaintext
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== Why is this an issue?
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Transmuting a null pointer is undefined behavior and can lead to unpredictable program crashes and security vulnerabilities.
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=== Code examples
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==== Noncompliant code example
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[source,rust,diff-id=1,diff-type=noncompliant]
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----
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let null_ref: &u64 = unsafe { std::mem::transmute(0 as *const u64) }; // Noncompliant: Transmuting a null pointer.
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----
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==== Compliant solution
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[source,rust,diff-id=1,diff-type=compliant]
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----
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let null_ref: Option<&u64> = None; // Compliant: Use Option to represent nullable references.
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----
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== Resources
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=== Documentation
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* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#transmuting_null
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