Dear Mohammad,

This is often (generally) caused by trying to access memory which is uninitialised, such as trying to access the 11th entry in an array of length 10. The fact the code compiles is no indication that it will run (and indeed if it does run no indication that it will give you the correct answer!).

I suggest running the code in a debugger to find exactly when the fault occurs, or if you are not familiar with debuggers then placing comments in your code, recompiling it and seeing which comments get printed and which don't.

 John

On 26/01/12 15:51, Mohammad Mohsenie wrote:
hi there
i'm using fedora 13 and dealii 7.1 .i've written an oo program witch it was build properly and executable file built but when i tried to run it the error segmentation fault was shown .

============================ Running main
make: *** [run] Segmentation fault (core dumped)

any help would be appreciated .
regards
S.M.Mohseni


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