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Subject:	RE: Serial port problems with cygwin1.dll 1.3.15 on Win98SE
Date:	Wed, 13 Nov 2002 19:46:23 -0500
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From:	"Sergei Okhapkin" <sokhapkin AT LEAPSTONE DOT com>
To:	"Ton van Overbeek" <v-overbeek AT cistron DOT nl>, <cygwin AT cygwin DOT com>
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Could you run "strace -o tracefile m68k-palmos-gdb ....", do everything
you need to hang the system and send the tracefile (compressed!) to me?
The tracefile will be huge....

-----Original Message-----
From: Ton van Overbeek [mailto:v-overbeek AT cistron DOT nl] 
Sent: Wednesday, November 13, 2002 4:21 PM
To: cygwin AT cygwin DOT com
Subject: Serial port problems with cygwin1.dll 1.3.15 on Win98SE


When using a cross debugger (m68k-palmos-gdb) talking to a Palm device
via the serial port on W98SE my system completely hangs. What I have
been able to deduce is that it happens as soon as the Palm sends a debug
packet to the PC. M68k-palmos-gdb opens the serial port, sets the
baudrate to 57600 and puts the port in raw mode. You can still interrupt
the program and do other things after this, provided the Palm has not
sent any data yet. As soon as it sends data (e.g. when you start the
program you want to debug) the whole system hangs. Ctrl-Alt-Delete gives
a blue screen etc.

I went back to older versions of cygwin1.dll and everything works fine
up to version 1.3.14. So something happened between 1.3.14 and 1.3.15. I
suspect some of the recent changes to fhandler-serial.cc.

Any hints on how to debug this? snapshots to try?
Output from cygcheck -s -r -v attached.

Ton van Overbeek

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