[ILUG] Segmentation Fault
chris.higgins at horizon.ie
Thu Sep 13 14:29:31 IST 2001
> But when I try to use it as an inpout for the second fortran program, I get
> "Segmentation Fault".
A segmentation fault, is an attempt by your program to access a portion
of memory which does not belong to the process. It's more usual to see them
in C programs - in which case it's usually a non-initialised pointer, or
Use strace to see exactly what your program is doing, and you might find that
it's failing to perform some system operation - if you are then assuming that
the system operation succeeded and doing something based on a return value -
you might be using an invalid return value..
Strace should help loads....
> Ok, here's the question: in general, what causes segmentation faults?
> I've gone through the second fortran program, even added in print commands
> to see how far down the program, I was getting, but the first one isn't even
> I've checked anything I can think of - file permissions, etc - and I can't
> find anything.
> Any suggestions????????
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** Chris Higgins e: chris.higgins at horizon.ie **
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