[fpc-devel] TStreamReader (streamex unit) issue

[Andrea Mauri]

Dear all,
TStreamReader.ReadLine seems to fail under specific circumstances.
I created a test to easily reproduce the problem.
The test makes use of a TStream that behaves in a weird, but formally
correct way. I created it based on a real experience with the StdIn that I
was able to reproduce thanks to pre-existing logging.
I suggest you use the test on Windows otherwise I'm not sure you'll be able
to reproduce the problem.

I believe the bug can be fixed by updating VPByte right after FillBuffer is
called:

      [...]
      FillBuffer;
      VPByte := @FBuffer[FBufferPosition]; //bugfix
      VPosition := FBufferPosition;
      [...]

Tested with Lazarus 2.0.10 FPC 3.2.0 on Win64

Posted on lazarus forum at:
https://forum.lazarus.freepascal.org/index.php?topic=54033.msg400820#msg400820

Is it a bug or am I missing something?

Kind regards,
Andrea
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