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Simon Williams wrote: > > Firstly, gdb always says this when starting the program: > Failed to read a valid object file image from memory. > > I think that is a bug with gdb that's related to newer kernels, but if > anyone has any more info on that that would be good. The Ubuntu forums claim it is sorted in 2.6.20-6 (was introduced at 2.6.19 by the sounds of it). > The last line is driving me nuts- why won't it tell me where the > segfault is? Segfault in gdb can also be a symptom of the gdb problem. I think "first fix your tools" is the order of the day. > I have no idea about multi-threaded programs, which isn't really helping. They make your head hurt. > The main question at the moment is: can I tell gdb to "run", but give > output like I was saying "step" each time? That would probably give me > the answer. I starting manually stepping, but wxwidgets seems to have a > lot of code that it goes through, and I'm not convinced that I'm not > going round in circles. You can step per instruction, or you can step over a whole routine, probably best to step over whole routines in the set-up till you get closer to the error. The trouble with stepping is you realize how big modern programs can be. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html