Using wmic from zsh (cygwin) causes conhost to crash

[Elepover]

Environment

Windows build number: 10.0.18362.0
Windows Terminal version (if applicable): 0.10.781.0

Any other software?
zsh (from cygwin package manager)

Steps to reproduce

1. Type wmic <- First round
2. Press Ctrl-C
3. Type wmic again <- Second round
4. Press Ctrl-C

Then OpenConsole.exe crashes with exit code 1.

Expected behavior

Other shells work just fine (w/ and wo/ Windows Terminal), only zsh causes OpenConsole.exe to crash.

Bash

Bash (from cygwin, running with Windows Terminal)

Git Bash (MINGW64)

Windows PowerShell, running with Windows Terminal

Windows Command Prompt, running with Windows Terminal

zsh, first round

zsh, second round before pressing Ctrl-C

zsh, second round after pressing Ctrl-C

(I didn't scroll the console window, it looks like the console just scrolled itself)

Actual behavior

When you do the first time, nothing abnormal happens

If you do it again, OpenConsole.exe crashes and Windows Error Reporting prompts up.

leaving output: [process exited with code 1]

Although I used oh-my-zsh for customization, zsh itself without any modification will crash OpenConsole.exe to crash, too.

My guess is that zsh printed something corrupt that OpenConsole.exe cannot handle. And zsh is the only shell that outputs a little % after Ctrl-C is pressed.

[DHowett-MSFT]

Triage notes: wmic sets the screen to be 1500x300 characters (which is insane); when zsh later attempts to clear part of the screen we try to access a character that's out of bounds.

[DHowett-MSFT]

This reproduces in the windows console host if the buffer size and screen size are set to the same thing. Even in Windows 20H1.

[DHowett-MSFT]

Marking this for 21H1, taking triage off.

[zadjii-msft]

Possibly also related:

• 'MODE CON LINES=100' kills command prompt #4062
• Tab exits with code 1 when Console.SetBufferSize has been modified and you maximize window #7581
• conhost crashes on SetConsoleWindowInfo #5843

[DHowett]

I've got good news and bad news.

[zadjii-msft]

Arguably, whatever they were doing should still not crash, even if wmic itself is deprecated.

[zadjii-msft]

Meh, this one and #7581 are the same thing. That other thread's got a better non-wmic repro though, so I'm gonna use that one. Thanks!

/dup #7581

[ghost]

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!