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Terminal crashes deallocating til::bitmap's vector run w/ PMR allocator (??) #12909

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opened 2026-01-31 03:28:40 +00:00 by claunia · 0 comments
claunia commented 2026-01-31 03:28:40 +00:00
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Originally created by @ralish on GitHub (Mar 8, 2021).

Originally assigned to: @DHowett on GitHub.

Environment

Windows build number: 10.0.19042.844
Windows Terminal version: 1.6.10571.0

Steps to reproduce

Unable to reproduce reliably but suspect it's related to split panes across numerous tabs. I can't remember the last time I saw Windows Terminal crash, but I usually don't use split planes much. This time I had numerous tabs (common) and a vertical split in most of those tabs. Probably not material but all terminals were PowerShell 7 and most had open WinRM sessions.

I was able to retrieve a crash dump which I've uploaded via Feedback Hub here. A quick analysis in WinDbg points to heap corruption. The lack of symbols though makes interpreting the stack trace of the faulting thread a bit more involved.

Expected behavior

Not to crash :-)

Actual behavior

Crash of Windows Terminal and the loss of all open terminals.

Other notes

It'd be nice if symbols could be published at least for official releases. This could be as simple as uploading them in a separate Zip attached to the GitHub releases page, instead of publishing them on the official Microsoft symbol server. In turn, this would allow people like me to perform more analysis of issues themselves, hopefully leading to more detailed bug reports :-)

Originally created by @ralish on GitHub (Mar 8, 2021). Originally assigned to: @DHowett on GitHub. <!-- 🚨🚨🚨🚨🚨🚨🚨🚨🚨🚨 I ACKNOWLEDGE THE FOLLOWING BEFORE PROCEEDING: 1. If I delete this entire template and go my own path, the core team may close my issue without further explanation or engagement. 2. If I list multiple bugs/concerns in this one issue, the core team may close my issue without further explanation or engagement. 3. If I write an issue that has many duplicates, the core team may close my issue without further explanation or engagement (and without necessarily spending time to find the exact duplicate ID number). 4. If I leave the title incomplete when filing the issue, the core team may close my issue without further explanation or engagement. 5. If I file something completely blank in the body, the core team may close my issue without further explanation or engagement. All good? Then proceed! --> <!-- This bug tracker is monitored by Windows Terminal development team and other technical folks. **Important: When reporting BSODs or security issues, DO NOT attach memory dumps, logs, or traces to Github issues**. Instead, send dumps/traces to secure@microsoft.com, referencing this GitHub issue. If this is an application crash, please also provide a Feedback Hub submission link so we can find your diagnostic data on the backend. Use the category "Apps > Windows Terminal (Preview)" and choose "Share My Feedback" after submission to get the link. Please use this form and describe your issue, concisely but precisely, with as much detail as possible. --> # Environment ```none Windows build number: 10.0.19042.844 Windows Terminal version: 1.6.10571.0 ``` # Steps to reproduce Unable to reproduce reliably but suspect it's related to split panes across numerous tabs. I can't remember the last time I saw Windows Terminal crash, but I usually don't use split planes much. This time I had numerous tabs (common) and a vertical split in most of those tabs. Probably not material but all terminals were PowerShell 7 and most had open WinRM sessions. I was able to retrieve a crash dump which I've uploaded via Feedback Hub [here](https://aka.ms/AAbf22x). A quick analysis in WinDbg points to heap corruption. The lack of symbols though makes interpreting the stack trace of the faulting thread a bit more involved. # Expected behavior Not to crash :-) # Actual behavior Crash of Windows Terminal and the loss of all open terminals. # Other notes It'd be nice if symbols could be published at least for official releases. This could be as simple as uploading them in a separate Zip attached to the GitHub releases page, instead of publishing them on the official Microsoft symbol server. In turn, this would allow people like me to perform more analysis of issues themselves, hopefully leading to more detailed bug reports :-)
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Reference: starred/terminal#12909
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