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[release/7.0] Ensure ReadBufferState resets any BOM offsets every time the buffer is advanced. #78235

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Merged
merged 3 commits into from
Nov 11, 2022
Merged

[release/7.0] Ensure ReadBufferState resets any BOM offsets every time the buffer is advanced. #78235

merged 3 commits into from
Nov 11, 2022

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@github-actions github-actions bot commented Nov 11, 2022 •
edited by eiriktsarpalis
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Backport of #78221 to release/7.0

/cc @eiriktsarpalis

Customer Impact

Addresses an issue reported by a partner team. A change in #70430 regressed BOM handling in async deserialization, which under certain circumstances can result in a small number of bytes being skipped by the reader.

Testing

Added a regression covering the reported issues. Updates the async serialization stress testing harness so that the BOM character is injected in payloads.

Risk

Low. Makes a targeted change to production code addressing the bug in question.

@eiriktsarpalis eiriktsarpalis self-requested a review November 11, 2022 18:02
@eiriktsarpalis eiriktsarpalis self-assigned this Nov 11, 2022
@eiriktsarpalis eiriktsarpalis added this to the 7.0.x milestone Nov 11, 2022
@eiriktsarpalis eiriktsarpalis added the Servicing-consider Issue for next servicing release review label Nov 11, 2022
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ghost commented Nov 11, 2022

Tagging subscribers to this area: @dotnet/area-system-text-json, @gregsdennis
See info in area-owners.md if you want to be subscribed.

Issue Details

Backport of #78221 to release/7.0

/cc @eiriktsarpalis

Customer Impact

Testing

Risk

IMPORTANT: Is this backport for a servicing release? If so and this change touches code that ships in a NuGet package, please make certain that you have added any necessary package authoring and gotten it explicitly reviewed.

Author: github-actions[bot]
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Labels:

area-System.Text.Json
Milestone: -

@build-analysis build-analysis bot mentioned this pull request Nov 11, 2022
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@eiriktsarpalis eiriktsarpalis added Servicing-approved Approved for servicing release and removed Servicing-consider Issue for next servicing release review labels Nov 11, 2022
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Approved by Tactics over email.

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carlossanlop commented Nov 11, 2022 •
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Approved by Tactics and signed off.
CI failure is known and unrelated: #77988
This change needs OOB package authoring changes but they have already been merged into release/7.0 in a previous fix that also needs to go into 7.0.1:

runtime/src/libraries/System.Text.Json/src/System.Text.Json.csproj

Lines 10 to 12 in 9e7c283

<IsPackable>true</IsPackable>
<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
<ServicingVersion>1</ServicingVersion>

Ready to merge. :shipit:

@carlossanlop carlossanlop merged commit 1c341de into release/7.0 Nov 11, 2022
@carlossanlop carlossanlop deleted the backport/pr-78221-to-release/7.0 branch November 11, 2022 22:56
@steveharter steveharter self-requested a review November 12, 2022 15:38
@ghost ghost locked as resolved and limited conversation to collaborators Dec 12, 2022
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@eiriktsarpalis eiriktsarpalis eiriktsarpalis approved these changes

@steveharter steveharter Awaiting requested review from steveharter

+1 more reviewer

@carlossanlop carlossanlop carlossanlop approved these changes

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@eiriktsarpalis @carlossanlop