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Date: Wed, 5 May 1999 20:56:37 +0200 (MET DST)
From: Joerg Schilling <schilling AT fokus DOT gmd DOT de>
Message-Id: <199905051856.UAA26390@fokus.gmd.de>
To: cygwin-developers AT sourceware DOT cygnus DOT com
Cc: Heiko_Eissfeldt AT z DOT detesystem DOT de, heiko AT colossus DOT escape DOT de,
        schilling AT fokus DOT gmd DOT de
Subject: possible Cygwin bugs


Hi,

I am just under way of porting ~ 3.5 MB of my private source code 
to Cygwin b20-1. The software includes

cdrecord
star
my own editor
my own shell


I found several problems that may be a bug or may be not. 
 
1)      The terminal size returned by TIOCGWINSIZE seems to be OK, 
        but the emulator wrappes one column too early. 
 
        I had to hack my editor to make it usable with this problem. 
 
1a)     On Win95, there is a problem with autorepeating cursor keys. 
        the terminal emulator looses single chars of the escape 
        sequences and I get [D[`s  inserted by bash or my editor. 
 
2)      rmdir(file) returns ENOTEMPTY. This is causing a bug in 
        both 'GNUtar' and 'star' (I now carefully handle the problem 
        but I hope it may be fixed). 
 
3)      You should note in the docs that the DOS filesystem only  
        increments in steps modulo 2 seconds. 
 
        Star will usually behave similar to cpio and tell you that 
        you don't need to extract a file because it is not newer 
        in the archive. If you extract a bunch of files and try it  
        a second time, star used tell you that half of all files  
        still need to be extracted. I had to introduce a workaround 
        But I believe that other programmers will get similar problems. 
 
4)      When I try to let may shell use its own malloc() which uses 
        sbrk(), it core dumps before main() gets called. 
        Are there any restrictions with the sbrk() implementation? 
 
In addition, I have a question about realtime priorities on win32.

Cdrecord likes to do mlockal() and also likes to put itself into
the highest possible priority. Is there any way to this in Cywgin?

Jörg

 EMail:joerg AT schily DOT isdn DOT cs DOT tu-berlin DOT de (home) Jörg Schilling D-13353 Berlin
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       schilling AT fokus DOT gmd DOT de		(work) chars I am J"org Schilling
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