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Fixes for AttributedString Comparison #50147

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NickGerleman
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Summary:
Noticed a couple bugs here, around a crash from assertion internal to the caching map which hashes on the AttributedString, that may or may not be related.

  1. We are missing baseTextAttributes for both hashing and equality (which is mostly innocuous, but still wrong)
  2. We were not hashing or comparing textAlignVertical
  3. For equality, we were comparing parent shadow view tag and metrics, but for hashing, we were hashing the whole ShadowView.

I think #3 could cause issues, since we could see different hash despite equality, which could break invariants.

Changelog: [Internal]

Differential Revision: D71500246

@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Mar 19, 2025
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This pull request was exported from Phabricator. Differential Revision: D71500246

Summary:

Noticed a couple bugs here, around a crash from assertion internal to the caching map which hashes on the AttributedString, that may or may not be related.

1. We are missing `baseTextAttributes` for both hashing and equality (which is mostly innocuous, but still wrong)
2. We were not hashing or comparing `textAlignVertical`
3. For equality, we were comparing parent shadow view tag and metrics, but for hashing, we were hashing the whole ShadowView.

I think microsoft#3 could cause issues, since we could see different hash despite equality, which could break invariants.

Changelog: [Internal]

Reviewed By: lunaleaps

Differential Revision: D71500246
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This pull request was exported from Phabricator. Differential Revision: D71500246

@facebook-github-bot facebook-github-bot added the Merged This PR has been merged. label Mar 20, 2025
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This pull request has been merged in 7136be2.

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This pull request was successfully merged by @NickGerleman in 7136be2

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3 participants