On 06/08/15 23:27, Andrew Williams wrote: > Hi guys, > > Thanks for the help - still rather confuse though - no more info as far > as I can see... > > (gdb) p eo_data_scope_get(editor->entry, elm_code_widget_class_get()) > $3 = (void *) 0x0 > (gdb) p eo_class_name_get(eo_class_get(editor->entry)) > $4 = 0x0 > (gdb) p eo_class_name_get(editor->entry) > > Program received signal SIGSEGV, Segmentation fault. > 0x00007fffec54c48e in vfprintf () from /usr/lib/libc.so.6 > The program being debugged was signaled while in a function called from GDB. > GDB remains in the frame where the signal was received. > To change this behavior use "set unwindonsignal on". > Evaluation of the expression containing the function > (eo_class_name_get) will be abandoned. > When the function is done executing, GDB will silently stop. > > Still confused, switching to valgrind to try and figure something out.
For all I remember, we test validity for both cases, so it's weird it would crash. The pointer definitely seems wrong, but I wonder how it can be so corrupt that it crashes. Looking forward to your report. -- Tom. > > Cheers, > Andy > > On Wed, 22 Jul 2015 at 08:50 Daniel Zaoui <daniel.za...@samsung.com > <mailto:daniel.za...@samsung.com>> wrote: > > On Wed, 22 Jul 2015 08:31:35 +0100 > Tom Hacohen <t...@osg.samsung.com <mailto:t...@osg.samsung.com>> wrote: > > According to git, Jeremy did that two years ago. > Personally, I like it this way as it is easier for debugging. And > well, I never needed to get the name of a class, but always of an > object. > > > When was that changed? Isn't it kinda wrong to do it now that both Eo > > classes and objects are "Eo *"? Because when you invoke this on > > classes you want to get the class class, how do you do the detection? > > Feels a bit inconsistent to me. > > > > -- > > Tom. > > > > > > On 22/07/15 08:28, Daniel Zaoui wrote: > > > On Wed, 22 Jul 2015 08:21:02 +0100 > > > Tom Hacohen <t...@osg.samsung.com <mailto:t...@osg.samsung.com>> > wrote: > > > > > > Hey boy, you don't need anymore eo_class_get in the middle! ;-) > > > > > >> p eo_class_name_get(eo_class_get(editory->entry)) > > >> > > >> As Daniel said though, this shouldn't and can't happen. The only > > >> reason why this function would return NULL is an error. It > works by > > >> adding an offset to the data pointer, so as long as it passes > > >> (basic) validation, it should at least return something. > > >> > > >> -- > > >> Tom. > > >> > > >> On 22/07/15 07:31, Daniel Zaoui wrote: > > >>> Hi, > > >>> > > >>> I never saw this kind of behavior, except if your object has been > > >>> freed (should see error prints) or your pointer is NULL or > even if > > >>> your object is not of the correct type. > > >>> > > >>> Do you see any Eo error messages? Can you "p > > >>> eo_class_name_get(editor->entry)"? Can you enter the function and > > >>> give more info on what happens inside? Maybe some thread deletes > > >>> the object when another tries to access? > > >>> > > >>> JackDanielZ > > >>> > > >>> On Tue, 21 Jul 2015 23:19:07 +0000 > > >>> Andrew Williams <a...@andywilliams.me > <mailto:a...@andywilliams.me>> wrote: > > >>> > > >>>> Hi, > > >>>> > > >>>> I'm trying to trace down a really annoying bug but it's proving > > >>>> illusive. I have some Eo objects (the Elm_Code_Widget) that > > >>>> stores a lot of information in it's associated data object. This > > >>>> works most of the time but on some occasions - potentially > in the > > >>>> vicinity of different thread access, but not reliably > > >>>> reproducible > > >>>> - the data seems to be NULL. > > >>>> > > >>>> p eo_data_scope_get(editor->entry, elm_code_widget_class_get()) > > >>>> $5 = (void *) 0x0 > > >>>> (this call normally returns a pointer to an Elm_Code_Widget_Data > > >>>> struct) > > >>>> > > >>>> Can anyone suggest why this could happen - what sort of error is > > >>>> it likely I have created that could cause this behaviour? > > >>>> It's driving me crazy as for the most part it works fine but > some > > >>>> combination of time and/or memory setup and/or threading > seems to > > >>>> trip it up. > > >>>> > > >>>> Many thanks for any suggestions, > > >>>> Andrew > > >>>> > > ------------------------------------------------------------------------------ > > >>>> Don't Limit Your Business. Reach for the Cloud. > > >>>> GigeNET's Cloud Solutions provide you with the tools and support > > >>>> that you need to offload your IT needs and focus on growing your > > >>>> business. Configured For All Businesses. Start Your Cloud Today. > > >>>> https://www.gigenetcloud.com/ > > >>>> _______________________________________________ > > >>>> enlightenment-devel mailing list > > >>>> enlightenment-devel@lists.sourceforge.net > <mailto:enlightenment-devel@lists.sourceforge.net> > > >>>> https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > > >>> > > >>> > > >>> > > ------------------------------------------------------------------------------ > > >>> Don't Limit Your Business. Reach for the Cloud. > > >>> GigeNET's Cloud Solutions provide you with the tools and support > > >>> that you need to offload your IT needs and focus on growing your > > >>> business. Configured For All Businesses. Start Your Cloud Today. > > >>> https://www.gigenetcloud.com/ > > >>> _______________________________________________ > > >>> enlightenment-devel mailing list > > >>> enlightenment-devel@lists.sourceforge.net > <mailto:enlightenment-devel@lists.sourceforge.net> > > >>> https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > > >>> > > >> > > >> > > >> > > ------------------------------------------------------------------------------ > > >> Don't Limit Your Business. Reach for the Cloud. > > >> GigeNET's Cloud Solutions provide you with the tools and support > > >> that you need to offload your IT needs and focus on growing your > > >> business. Configured For All Businesses. Start Your Cloud Today. > > >> https://www.gigenetcloud.com/ > > >> _______________________________________________ > > >> enlightenment-devel mailing list > > >> enlightenment-devel@lists.sourceforge.net > <mailto:enlightenment-devel@lists.sourceforge.net> > > >> https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > > > > > > > > > ------------------------------------------------------------------------------ > Don't Limit Your Business. Reach for the Cloud. > GigeNET's Cloud Solutions provide you with the tools and support that > you need to offload your IT needs and focus on growing your business. > Configured For All Businesses. 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