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assertion failed "nNewWidth>0 && nNewHeight>0" in RealBuffer.cpp:1894 ConEmu 161022 #934

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0anton opened this Issue Nov 1, 2016 · 7 comments

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4 participants
@0anton

0anton commented Nov 1, 2016

Hi,

I experience ConEmu crashes after resizing ConEmu window.

Assertion ConEmu 161022 [32] PID=7808, TID=14216
RealBuffer.cpp:1894
nNewWidth>0 && nNewHeight>0

Versions

ConEmu build: 161022 x64
OS version: Windows 10 x64
Used shell: cygwin

Problem description

ConEmu crashes after console resize (e.g. full-screen / part-screen toggle)

Steps to reproduce

  1. Start Conemu.
  2. Create couple of shells in the screen split mode.
  3. Open some files.
  4. Toggle full-screen for one of them.

Actual results

ConEmu crashes.

Expected results

ConEmu continue to work.

Additional files

[Traces]
https://www.dropbox.com/s/q77q57047exc4mx/Trap-161022-7808.zip?dl=0

[Settings]
https://www.dropbox.com/s/2jlceqaicbcoyhd/ConEmu.xml?dl=0

[screenshots]
https://www.dropbox.com/s/fhdeezyip86k2tz/ScreenShot031.jpg?dl=0

[logs]

(will follow with the next crash)

@Maximus5

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Maximus5 commented Nov 1, 2016

That usually means something bad happened with conhost.exe.
Can you reproduce? Than attach LogFiles please.

@0anton

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0anton commented Nov 1, 2016

Sure Max,

I'll provide logs with the next crash.

Kind regards,
Anton

On Tue, Nov 1, 2016 at 3:27 PM, Maximus5 notifications@github.com wrote:

That usually means something bad happened with conhost.exe.
Can you reproduce? Than attach LogFiles please.


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@0anton

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0anton commented Nov 3, 2016

Hi Max,

As requested, please find the crash log here:

ConEmu-srv-19028.zip

Kind regards,
Anton

@Maximus5

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Owner

Maximus5 commented Dec 8, 2016

2 all

I need more information to reproduce the issue.

  1. What are you doing exactly?
  2. Show screenshots with status bar visible of course. I need at least these columns: Terminal modes, Console visible rectangle, Console buffer size, Cursor information, Console server PID.
  3. I need all LogFiles created by this instance of ConEmu. Not only one selected file without any information what were you doing.

The issue is hard to fix because it depens on some race conditions in Microsoft's conhost.exe.

@Shredder121

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Shredder121 commented Dec 8, 2016

At the time I encountered my issue, it was easily reproducible.
You would just generate output until you were at the end of the buffer (scroll handle at the bottom of the scroll bar), and then clear.
But now, with a fresh install (both Windows and conemu) it doesn't happen.

So something, somewhere must break it, but I think it's not directly conemu.

@0anton

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0anton commented Dec 8, 2016

@m0n

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m0n commented Feb 27, 2018

ConEmu build: 180206 x64
OS version: Windows 10 LTSB x64
Used shell: Far Manager, version 3.0 (build 5151) x64

I can reproduce this assertion 10/10 on my PC:

  1. ConEmu64 -basic -log
  2. FAR.exe - without this step everything is OK
  3. wmic.exe diskdrive list brief /format:list
  4. Command executed properly
  5. wmic.exe
  6. Assertion happens

The dump & logs of this sequence are here.

I noticed that starting wmic.exe modifies "Screen Buffer Size" to 1500*300 in a normal cmd.exe (with "Use legacy console")

Wow - I just realised that if You set "Use legacy console" to "on" then wmic.exe starts with an extra delay but no assertion happens! This is an answer to why this bug not appears on Windows 7...

@Maximus5 Maximus5 added this to To Do in ConEmu via automation Apr 24, 2018

Maximus5 added a commit that referenced this issue Apr 24, 2018

@Maximus5 Maximus5 moved this from To Do to Ready for Testing in ConEmu Apr 24, 2018

Maximus5 added a commit that referenced this issue Apr 28, 2018

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