Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com X-Authentication-Warning: slinky.cs.nyu.edu: pechtcha owned process doing -bs Date: Tue, 14 Oct 2003 17:16:29 -0400 (EDT) From: Igor Pechtchanski Reply-To: cygwin@cygwin.com To: Brian Ford cc: cygwin@cygwin.com Subject: Re: cygpath hangings In-Reply-To: Message-ID: References: <20031014100230.A12215@fw.j-son.org> <006501c392b7$dc780730$200aa8c0@thorin> <3F8BE1B9.3000704@cs.york.ac.uk> Importance: Normal MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On Tue, 14 Oct 2003, Brian Ford wrote: > Igor, > > On Tue, 14 Oct 2003, Igor Pechtchanski wrote: > > > On Tue, 14 Oct 2003, chris wrote: > > > > > -- Code begins -- > > > > > > #include > > > > > > void fee (void) { > > > char *buf; > > > LPITEMIDLIST id; > > > SHGetPathFromIDList (id, buf); > > > } > > > > > > int main (int argc, char **argv) > > > { > > > return 0; > > > } > > > > Chris, > > > > I suspect that this hang might be happening while loading the DLL. Could > > you try to link your program with something like below and see if it still > > hangs, and what it outputs? > > > Yes, it still hangs when run under setup from explorer. No output from > the hung one, or when run stand alone in bash. > > > If it doesn't hang, try renaming > > SHGetPathFromIDList below to something else (e.g., foo) that calls the > > real SHGetPathFromIDList, call foo() from your fee() above, and link your > > program against both test_dll.dll and SHLWAPI.DLL. > > > Well, I didn't link explicitly with SHLWAPI.DLL, but same here. Does "cygcheck yourprog.exe" show both test_dll.dll and SHLWAPI.DLL? > There will be no ouput unless main calls foo, right? Actually, if the DLL was loaded, there should be output even if foo isn't called... > Then, I still get a hang under setup from explorer; no output. This could be because the DLL was not loaded, or because of the two stdio conflicts... Did you compile the DLL with -mno-cygwin? > Stand alone in a shell, output is: > > DLL loaded: process attach > DLL loaded: thread attach > Segmentation fault (core dumped) > > The SEGV is expected given the code is invalid anyway. > > Nothing to see here... move along... > [snip test_dll.c] Hmm. Maybe if the DLL has exported global variables, not just functions? I'll see if I can come up with the appropriate code and will then post it to the list. Igor -- http://cs.nyu.edu/~pechtcha/ |\ _,,,---,,_ pechtcha@cs.nyu.edu ZZZzz /,`.-'`' -. ;-;;,_ igor@watson.ibm.com |,4- ) )-,_. ,\ ( `'-' Igor Pechtchanski, Ph.D. '---''(_/--' `-'\_) fL a.k.a JaguaR-R-R-r-r-r-.-.-. Meow! "I have since come to realize that being between your mentor and his route to the bathroom is a major career booster." -- Patrick Naughton -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/