Why is this an issue?

Performing operations like offset or wrapping_add/wrapping_sub on raw pointers to zero-sized types (ZSTs) results in no-op operations. This is likely unintended and could make the code misleading, potentially hiding bugs.

Code examples

Noncompliant code example

unsafe { (&() as *const ()).offset(1); } // Noncompliant: No-op on zero-sized type pointer.

Compliant solution

// Removing the no-op operation as it has no effect.

Resources

Documentation

• Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#zst_offset