[Canary]: Tab tear-off leads to crash

[tusharsnx]

Windows Terminal version

1.21.991.0

Windows build number

10.0.22631.0

Other Software

No response

Steps to reproduce

1. Open Windows Terminal Canary.
2. Try tearing off a tab.

Expected Behavior

The tab is opened in a new WT window.

Actual Behavior

WT crashes.

[tusharsnx]

In debug build on main, Closing a tab with the "❌" button also leads to the same crashing behavior. This is not reproducible on the latest Canary build (maybe due to release vs debug build?)

[tusharsnx]

Exception: Unhandled exception at 0x00007FFDD7FBEBDF (ntdll.dll) in WindowsTerminal.exe: Indirect call guard check detected invalid control transfer.

The exception is thrown at this if's scope exit:

[lhecker]

Indirect call guard check detected invalid control transfer.

Hmm, this is just a hunch, and I apologize for your SSD 😣, but could you try cleaning the entire solution and building it again?

Some of us had this issue happen before and back then it could be resolved with a clean build. My suspicion is that the build system doesn't properly invalidate some compiled objects which results in mismatched vtables.

[tusharsnx]

@lhecker Thanks for the info. I'll try doing a clean build next time.

I'm also curious why Canary might crash on tab tear-off 🤔

[zadjii-msft]

FWIW I can repro the tear-off crash on my own canary 21.991 (and after upgrading, my 21.1011) here as well. So, it's definitely not just a clean build problem.