Segmantation fault

[dschulenburg]

I have a function that runs, but gets a segmentation fault if I make very minor changes. For example adding a print statment somwhere into the function works, adding the same print statment twice at the same position leads to a segmentation fault when the code is executed. Does anyone know what this could be ? Are segmentation fault errors always memory allocation errors ?

Thanks

[arne]

I have a function that runs, but gets a segmentation fault if I make very minor changes. For example adding a print statment somwhere into the function works, adding the same print statment twice at the same position leads to a segmentation fault when the code is executed. Does anyone know what this could be ? Are segmentation fault errors always memory allocation errors ?

Thanks

A segmentation fault typically occurs if a program tried to access a memory location it should not access. In many cases this is due to improper pointer usage. You may post your code (as far simplified as possible) so that others can try to reproduce and analyze the problem?

[dschulenburg]

Thanks, posting the code is difficult, it has about 1000 pages.I just wanted to double check if segmentation faults can occur due to different probelms than memory access. Do you know of other cases ?

A segmentation fault typically occurs if a program tried to access a memory location it should not access. In many cases this is due to improper pointer usage. You may post your code (as far simplified as possible) so that others can try to reproduce and analyze the problem?

[arne]

Thanks, posting the code is difficult, it has about 1000 pages.I just wanted to double check if segmentation faults can occur due to different probelms than memory access. Do you know of other cases ?

I see. No, better do not post your code then ;-).
You may refer to
http://c-faq.com/strangeprob/segv.html
for causes of segmentation violations.

[dschulenburg]

Cool, I'll have a look. Thanks

I see. No, better do not post your code then ;-).
You may refer to
http://c-faq.com/strangeprob/segv.html
for causes of segmentation violations.