segmentation fault

[cellyn]

im trying to install Triangle mesh generator in my Fedora 11, i've compiled successfully but when i try to run, it showed segmentation fault. what should i do to solve this problem??

[Rubberman]

The segmentation fault means that there is a memory violation in the code. Build it for debugging (-g option) and then you can run gdb against the core file when it crashes in order to see where it failed and why.

[cellyn]

im running the Triangle mesh generator with 64 bits linux computer, is it i have to edit the following command :

CSWITCHES = -O -DLINUX -I/usr/X11R6/include -L/usr/X11R6/lib

any problem with d DLINUX in my case??

[Rubberman]

You shouldn't need the -DLINUX, but it shouldn't be a problem either. However, you might want to make sure you aren't linking the 32bit libraries.

[cellyn]

i'd run the gdb successfully, it give me the result as follow :

Program received signal SIGSEGV, Segmentation fault.
showme_window (argc=256, argv=0x60fa00) at ./showme.c:2276
2276 fontvalues.font = font ->fid;

what should be the next step??

[Rubberman]

My guess is that the variable 'font' is either NULL (0) or some other invalid address, so when the program tries to access it on line 2276 it segfaults on you. Without looking at the program, I can't say anything further. Software failure analysis of this sort is part of what I do for a living. Major companies pay me $200-300 USD per hour to tell them how to fix this stuff. So, considering that this is a non-trivial application, and probably not well-written given that there are over 2000 lines in one translation unit (source file - showme.c), I don't think I'll take much time to review it for you...

[diog3n3s]

The problem is you don't have the correct font (9x15) installed, on Fedora 12 it was the xorg-x11-fonts-misc package that had it. If you don't have permissions to install font packages, you could edit the showme.c file on line 2274, changing the "9x15" to "fixed".