https://github.com/maximus5/ms-bug-2

Broken text in console input buffer
https://github.com/maximus5/ms-bug-2

Last synced: 3 months ago
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Broken text in console input buffer

• Host: GitHub
• URL: https://github.com/maximus5/ms-bug-2
• Owner: Maximus5
• Created: 2016-07-07T15:45:12.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2016-07-07T16:16:54.000Z (over 9 years ago)
• Last Synced: 2025-01-31T11:50:16.827Z (12 months ago)
• Language: C++
• Size: 50.8 KB
• Stars: 1
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

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README

          
# conhost console input bug

Some console applications use `ReadFile` WinApi function or its wrappers.

The problem is that when console **input** buffer is filled by `WriteConsoleInput` with ‘long’ strings (e.g. URL-s, code snippets, etc.), `ReadFile` returns broken data.

This sample application illustrates the problem.

It writes 65-chars long string into console input buffer in one thread and read input buffer in the another thread.

    0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ|||

If your Windows has this bug, you'll see `?` or some other errors instead or inside characters of the expected string.

These error characters are highlighted - black text on red background.

![Example of output](https://github.com/Maximus5/ms-bug-2/blob/master/example.png)

### References

* https://github.com/Maximus5/issues/760

* https://github.com/Maximus5/conemu-old-issues/issues/903