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Warn on structs with a trailing zero-sized array but no `repr` attribute by nham...
source link: https://github.com/rust-lang/rust-clippy/pull/7838
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Closes #2868
changelog: Implement [`trailing_empty_array`], which warns if a struct is defined where the last field is a zero-sized array but there are no repr attributes. Zero-sized arrays aren't very useful in Rust itself, so such a struct is likely being created to pass to C code or in some other situation where control over memory layout matters. Either way, a repr attribute is needed.
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