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Gate cryptocorrosion impls with their type - #3628

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Gfrchqtqurjfjrevgaq4eppd7settyyyn
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Gate cryptocorrosion impls with their type#3628
joshlf wants to merge 1 commit into
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Gfrchqtqurjfjrevgaq4eppd7settyyyn

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@joshlf

@joshlf joshlf commented Sep 4, 2026

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cryptocorrosion_derive_traits! applied item attributes only to its generated
type declaration. A false cfg could therefore remove that declaration while
leaving unsafe trait impls to bind to a different same-named type.

Parse cfg predicates separately and apply them to one expansion containing the
representation check, declaration, and every unsafe impl. Normalize the small
set of non-structural attributes the compatibility macro needs, reject other
attributes, and restrict repeated field types to a macro-free grammar so a
stateful proc macro cannot change the declaration independently of its bounds.
Exercise both public and directly callable internal macro arms.

Closes #3616

Authored by an AI agent acting on Josh Liebow-Feeser's behalf.


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git fetch origin refs/heads/Gfrchqtqurjfjrevgaq4eppd7settyyyn && git checkout FETCH_HEAD

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cryptocorrosion_derive_traits! applied item attributes only to its generated
type declaration. A false cfg could therefore remove that declaration while
leaving unsafe trait impls to bind to a different same-named type.

Parse cfg predicates separately and apply them to one expansion containing the
representation check, declaration, and every unsafe impl. Normalize the small
set of non-structural attributes the compatibility macro needs, reject other
attributes, and restrict repeated field types to a macro-free grammar so a
stateful proc macro cannot change the declaration independently of its bounds.
Exercise both public and directly callable internal macro arms.

Closes #3616

*Authored by an AI agent acting on Josh Liebow-Feeser's behalf.*

gherrit-pr-id: Gfrchqtqurjfjrevgaq4eppd7settyyyn
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Codex Review Summary

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Review Status Commit Review trigger
📝 Code Review Completed 2026-09-05T00:02:06.613065Z 13ba1df PR opened
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.85%. Comparing base (2dad389) to head (13ba1df).

Additional details and impacted files
@@           Coverage Diff           @@
##             main    #3628   +/-   ##
=======================================
  Coverage   91.85%   91.85%           
=======================================
  Files          20       20           
  Lines        6093     6093           
=======================================
  Hits         5597     5597           
  Misses        496      496           

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Security Advisory: A disabled macro definition attaches unsafe parsing traits to a different type

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