Mail Archives: cygwin/2004/01/21/13:37:39
On Wed, Jan 21, 2004 at 12:27:52PM -0600, Brian Ford wrote:
>On Wed, 21 Jan 2004, Christopher Faylor wrote:
>
>> Ok. So, I took ten minutes and debugged the problem myself and I'll
>> check in a fix.
>>
>Thank you.
>
>That is why I asked. You know your way around, so it takes you *much*
>less time.
This was only a little knowing my way around. It was really pretty
basic debugging.
The code was hanging in read. So, I set a breakpoint in readv, which,
on code inspection, is what read calls. Single stepping along, I came
to the function that was hanging. Tracing that along I came to the
Windows API function that was hanging. Realizing that this function
obviously wasn't supposed to be hanging, I theorized that the com port
wasn't being opened properly. So, I set a breakpoint on
fhandler_serial::open and notice nothing special there. Then I noticed
that fhandler_serial::open calls fhandler_base::open. I noticed that
fhandler_base::open has special serial considerations. Stepping over
those, I saw they weren't being exercised. So I fixed that using the
same technique you used here:
2003-11-12 Brian Ford <ford AT vss DOT fsi DOT com>
* dtable.cc (build_fh_pc): Use DEV_SERIAL_MAJOR to catch all serial
ports.
cgf
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