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[Coding Rule]: Do not read from uninitialized union fields#302

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rcseacord wants to merge 11 commits intorustfoundation:mainfrom
rcseacord:patch-3
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[Coding Rule]: Do not read from uninitialized union fields#302
rcseacord wants to merge 11 commits intorustfoundation:mainfrom
rcseacord:patch-3

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@rcseacord rcseacord commented Dec 16, 2025

…alized bytes

gui_UnionPartialInit
Do not read from union fields that may contain uninitialized bytes

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@rcseacord rcseacord mentioned this pull request Dec 16, 2025
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@rcseacord rcseacord self-assigned this Dec 16, 2025
@rcseacord rcseacord marked this pull request as draft December 16, 2025 14:19
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felix91gr commented Dec 17, 2025

What's the difference in intent between this one and #300? This one has the title I would like #300 to have, but this one in particular I haven't read yet.

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rcseacord commented Dec 17, 2025

What's the difference in intent between this one and #300? This one has the title I would like #300 to have, but this one in particular I haven't read yet.

@felix91gr the other one is for validity checks. this one is for reading uninitialized.

workingjubilee
workingjubilee reviewed Dec 31, 2025
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Noticed some sharp edges in the text.

rcseacord and others added 4 commits January 19, 2026 14:01
@rcseacord @PLeVasseur
[Coding Rule]: Do not read from union fields that may contain uniniti…
216103c 
…alized bytes

gui_UnionPartialInit 
Do not read from union fields that may contain uninitialized bytes
@rcseacord @PLeVasseur
Update index.rst
cf89c46 
add new guideline
@rcseacord @PLeVasseur
Update guidelines on struct field initialization
1f979fd 
Clarify rules for accessing struct fields and typed reads.
@PLeVasseur
fix(guidelines): normalize union partial init
1e988e7 
Standardize IDs and bibliography entries, update example miri/warning handling, and add missing tag definitions for unions/initialization.
@PLeVasseur PLeVasseur added coding guideline An issue related to a suggestion for a coding guideline chapter: types-and-traits labels Jan 19, 2026
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github-actions bot commented Jan 19, 2026

👋 Hey @Dillonmcewan! You've been assigned to review this coding guideline PR.

Your Role as Reviewer

As outlined in our contribution guide, please:

  1. Begin your review within 14 days
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  3. Iterate with @rcseacord - they may update the PR based on your feedback
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  • Guideline title is clear and follows conventions
  • Amplification section expands on the title appropriately
  • Rationale explains the "why" effectively
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  • Code examples compile (check the CI results)
  • FLS paragraph ID is correct

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rcseacord
rcseacord commented Jan 19, 2026
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@rcseacord rcseacord marked this pull request as ready for review January 20, 2026 15:49
Dillonmcewan
Dillonmcewan reviewed Jan 20, 2026
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Generally looks great! Noticed one minor formatting issue and had one question about some non-compliant examples

Dillonmcewan
Dillonmcewan approved these changes Jan 21, 2026
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LGTM!

@rcseacord rcseacord requested a review from PLeVasseur January 21, 2026 20:26
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Hey @Dillonmcewan, it's been more than 14 days since you were assigned to review this.

Please take one of the following actions:

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Dillonmcewan
Dillonmcewan approved these changes Feb 3, 2026
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Didn't seem to register my last approval. Trying again

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Dillonmcewan commented Feb 3, 2026

@PLeVasseur Is there something else I need to do to appease the bot? I approved the PR, but it still flagged me as having not reviewed

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PLeVasseur commented Feb 3, 2026

@PLeVasseur Is there something else I need to do to appease the bot? I approved the PR, but it still flagged me as having not reviewed

Apologies @Dillonmcewan -- there's a bug / not well defined workflow here. Still working to resolve this. Will respond here once fixed. 🙃

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felix91gr commented Feb 4, 2026

@Dillonmcewan to keep you in the loop: an issue to fix this has been opened #388 :)

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PLeVasseur commented Feb 4, 2026

@Dillonmcewan -- I hope I was able to get this fixed, see PR here: #391

Could you try to approve again to see if it'll take?

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@Dillonmcewan Dillonmcewan Dillonmcewan approved these changes

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chapter: types-and-traits coding guideline An issue related to a suggestion for a coding guideline

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