Mail Archives: cygwin/2008/10/14/23:51:29
Peter Ross writes:
> On Wed, Oct 15, 2008 at 12:18 PM, Mark Geisert <XXXXXXXXXXXXXXXX> wrote:
Please don't quote raw email addresses in your emails to the list.
> >> I've written an application which does some initialization and then
> >> does a tcp accept. 5 minutes and 20 seconds give or take after doing
> >> the tcp.accept the application aborts with exit code 0. If I
> >> continually send tcp data to this application then the crash doesn't
> >> occur, it is only after 5 minutes and 20 seconds of waiting for I/O.
> > [...]
> >> Here is the complete list of libraries that I use -lodbc32 -lole32
> >> -lraptor -lxslt -lcurl -lz -lxml2 -ldb -lssl -lcrypto -lexpat
> >> -lwsock32
> >
> > You haven't supplied the canonical problem report info as requested in...
> >
> >> Problem reports: <http://cygwin.com/problems.html>
That was a hint :-). Please supply that info, specifically the output of
cygcheck -s -v -r
but *as an attachment* to your next email.
> > ...so only WAGs come to mind: Try it without using wsock32. Cygwin has its
> > own implementation of the TCP/IP networking functions and there might be
> > unpleasant mixing of semantics when wsock32 is explicitly linked in.
> >
> Thanks for the WAG, unfortunately it didn't work.
Are all of those libraries you're linking with compiled for Cygwin? Mixing
Cygwin libs with non-Cygwin libs won't work.
Another thing that might prove informative is running cygcheck on the
executable to see its tree of library dependencies. Maybe wsock32 snuck back
in somehow.
> > Something else you could try is running the app under strace to see if
anything
> > obviously erroneous sticks out.
> >
> Now I get a seg-fault when running under strace (it doesn't even get
> to the tcp accept), but when I try and attach to the process using
> gdb. I get the following error.
>
> $ ps aux | grep wos
> 1740 1 1740 1740 con 500 04:15:28 /cygdrive/e/wos_fpz/
syst
> em/build/wos_server
>
> Administrator <at> spare ~/wos_fpz/system/build
> $ gdb ./wos_server
> GNU gdb 6.8.0.20080328-cvs (cygwin-special)
> Copyright (C) 2008 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "i686-pc-cygwin"...
> (gdb) attach 1740
> Can't attach to process.
> (gdb)
I don't have any further insight on this; strace has always worked for me.
..mark
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