Thank you all, and thank you Lazzar, I appreciate it.

what you adviced I have tried before, it is something like this

And I dont know what do these warning and error really mean!


And another question, is there a subforum for sgi-IRIX under this forum?


Daniel

maybe you could try with dbx instead gdb if it is installed.
in dbx you type 'where' instead of 'bt' to get the backtrace.

MySQL Bugs: #25344: Segmentation violation when try to run the perror utility
the above link shows a case where gdb didn't work, but dbx showed a useful backtrace on irix.

Thank you Lazzar, that helps.
With dbx I have found a little bit more information than gdb.
However, I am still very frustrated, for the dbx show me as if something wrong with a *.C file, however, there's no problem at all when I compile it under any linux, that is to say, it shouldn't have to be the problem.

So, I doubt whether dbx have given me the right information!!!

CFD codes is extremely huge! I will keep on looking.

Best Regards,
Daniel