---------- Forwarded message ---------- From: Lyes Amazouz <<a href="mailto:lyesjob@gmail.com">lyesjob@gmail.com</a>> Date: May 8, 2008 6:14 PM Subject: Re: [Libevent-users] how to compile under cygwin To: Nick Mathewson <<a href="mailto:nickm@freehaven.net">nickm@freehaven.net</a>>, Lyes Amazouz <<a href="mailto:lyesjob@gmail.com">lyesjob@gmail.com</a>>, <a href="mailto:libevent-users@monkey.org">libevent-users@monkey.org</a> <div>On 5/8/08, Nick Mathewson <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:nickm@freehaven.net" target="_blank">nickm@freehaven.net</a>> wrote: <blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">I haven't tried cygwin in a while, but it used to work fine.  To learn more about where the bug is here, it might help if you can get a stack trace (using gdb) to figure out where the segfault is occurring. Also, if you can send a very small example thing that reproduces the bug for you, that would help too. Finally, make sure you're using Libevent 1.4.3 (or wait for Libevent 1.4.4, which should come out in the next 48 hours): they should be way less buggy than many older versions. yrs, -- Nick </blockquote></div> <div>Sorry, this message is to be before the rattachements: Thanks for you quick reponse. I'll wait for <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://1.4.4./" target="_blank">1.4.4.</a> In the mean time, could you please find a complete GDB and STRACE logs (attached). All the best Lyes 1) GDB TRACE: 1.1) Start GDB: $ gdb app/warcserver.exe GNU gdb 6.8.0.20080328-cvs (cygwin-special) Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <<a onclick="return top.js.OpenExtLink(window,event,this)" href="http://gnu.org/licenses/gpl.html" target="_blank">http://gnu.org/licenses/gpl.html</a>> 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) r -i <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://10.211.55.4/" target="_blank">10.211.55.4</a> -p 7777 -x tmp Starting program: /cygdrive/c/warc-tools-read-only/app/warcserver.exe -i <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://10.211.55.4/" target="_blank">10.211.55.4</a> -p 7777 -x tmp [New thread 532.0xa7c] [New thread 532.0xf7c] Starting the WARC Server ... 1.2) Send a request : curl <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://10.211.55.4:7777/WARC/0.17" target="_blank">http://10.211.55.4:7777/WARC/0.17</a> 1.3) Return to GDB: [New thread 532.0x8c0]      10 [main] warcserver 532 _cygtls::handle_exceptions: Exception: STATUS_ACCESS_VIOLATION     989 [main] warcserver 532 open_stackdumpfile: Dumping stack trace to warcserver.exe.stackdump 210501 [main] warcserver 532 _cygtls::handle_exceptions: Exception: STATUS_ACCESS_VIOLATION 211948 [main] warcserver 532 _cygtls::handle_exceptions: Error while dumping state (probably corrupted stack) Program received signal SIGSEGV, Segmentation fault. 0x61016583 in stack_info::walk () from /usr/bin/cygwin1.dll (gdb) backtrace #0  0x61016583 in stack_info::walk () from /usr/bin/cygwin1.dll #1  0x7c859bb0 in OutputDebugStringA () from /cygdrive/c/WINDOWS/system32/kernel32.dll #2  0x40010006 in ?? () #3  0x00000000 in ?? () (gdb) 1.4) Please find attached the coredump (warcserver.exe.stackdump) 2) STRACE: 2.1) Launch the application with STRACE: $ strace  ./app/warcserver.exe -i <a onclick="return top.js.OpenExtLink(window,event,this)" href="http://10.211.55.4/" target="_blank">10.211.55.4</a> -p 7777 -x tmp &>warcserver.exe.strace 2398351 [main] warcserver 4044 _cygtls::handle_exceptions: Exception: STATUS_ACCESS_VIOLATION 2567102 [main] warcserver 4044 open_stackdumpfile: Dumping stack trace to warcserver.exe.stackdump 2756096 [main] warcserver 4044 _cygtls::handle_exceptions: Exception: STATUS_ACCESS_VIOLATION 2758951 [main] warcserver 4044 _cygtls::handle_exceptions: Error while dumping state (probably corrupted stack) 2.2) Please find attached the STRACE log (warcserver.exe.strace) -- ===========   |   Lyes Amazouz   |   USTHB, Algiers =========== </div> -- ===========   |   Lyes Amazouz   |   USTHB, Algiers ===========