Consider auto derefs before warning about write only fields #82297
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Changes from 81473 extended the dead code lint with an ability to detect fields that are written to but never read from. The implementation skips over fields on the left hand side of an assignment, without marking them as live. A field access might involve an automatic dereference and de-facto read the field. Conservatively mark expressions with deref adjustments as live to avoid generating false positive warnings.
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Consider auto derefs before warning about write only fields Changes from rust-lang#81473 extended the dead code lint with an ability to detect fields that are written to but never read from. The implementation skips over fields on the left hand side of an assignment, without marking them as live. A field access might involve an automatic dereference and de-facto read the field. Conservatively mark expressions with deref adjustments as live to avoid generating false positive warnings. Closes rust-lang#81626.
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Consider auto derefs before warning about write only fields Changes from rust-lang#81473 extended the dead code lint with an ability to detect fields that are written to but never read from. The implementation skips over fields on the left hand side of an assignment, without marking them as live. A field access might involve an automatic dereference and de-facto read the field. Conservatively mark expressions with deref adjustments as live to avoid generating false positive warnings. Closes rust-lang#81626.
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Rollup of 10 pull requests Successful merges: - rust-lang#81629 (Point out implicit deref coercions in borrow) - rust-lang#82113 (Improve non_fmt_panic lint.) - rust-lang#82258 (Implement -Z hir-stats for nested foreign items) - rust-lang#82296 (Support `pub` on `macro_rules`) - rust-lang#82297 (Consider auto derefs before warning about write only fields) - rust-lang#82305 (Remove many RefCells from DocContext) - rust-lang#82308 (Lower condition of `if` expression before it's "then" block) - rust-lang#82311 (Jsondocck improvements) - rust-lang#82362 (Fix mir-cfg dumps) - rust-lang#82391 (disable atomic_max/min tests in Miri) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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Changes from #81473 extended the dead code lint with an ability to detect
fields that are written to but never read from. The implementation skips
over fields on the left hand side of an assignment, without marking them
as live.
A field access might involve an automatic dereference and de-facto read
the field. Conservatively mark expressions with deref adjustments as
live to avoid generating false positive warnings.
Closes #81626.