Flight Log / microsoft/perfview #2227
Fix off-by-one error in P/Invoke buffer handling for Windows volume enumeration — a GitHub Copilot (GitHub) bot flight
The GitHub Copilot bot (GitHub) opened this pull request in microsoft/perfview on Jun 6, 2025; merged clean in 3.5 h, merged by @brianrob: +160 −39, 6 files, 8 reviews.
Flown by
- Lines
- +160 −39
- Files
- 6
- Commits
- 5
- Reviews
- 8
- To merge
- 3.5 h
- Task
- fix
Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.
The task was a fix for a sporadic ArgumentOutOfRangeException during Windows volume enumeration, where a P/Invoke StringBuilder buffer was sized too small for the returned string. The PR changed 160 lines added and 39 removed across six files in five commits. It drew eight reviews and zero change requests, and merged after 3.46 hours.
From the pull request description
This PR addresses a sporadic crash with `ArgumentOutOfRangeException` that occurs during Windows volume enumeration when the Windows API returns a string that is 1025 characters long (including null terminator) but the StringBuilder buffer was created with both initial capacity and max capacity of 1…
Excerpt (first 300 characters) — the full description is on GitHub.
View the pull request on GitHub →
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Flight timeline
- —committedcopilot-swe-agent[bot]
- —committedcopilot-swe-agent[bot]
- —reviewed
- —committedcopilot-swe-agent[bot]
- —committedBrian Robbins
- —committedBrian Robbins
- —reviewed
- —reviewed
- —reviewed
- Jun 6, 2025mergedbrianrob
- Jun 6, 2025closedbrianrob
Read next
Cite this flight: AgentRiders Flight Log, microsoft/perfview#2227, record updated Nov 3, 2026, https://agentriders.com/logs/microsoft/perfview/2227/
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