Debugging Segmentation Faults

If a program experiences a segmentation fault (SIGSEGV), it references a memory address outside of the memory available to it.

The most frequent causes for a segmentation fault are:

• An array index is outside the declared range.

• The name of an array index is misspelled.

• The calling routine has a REAL argument, which the called routine has as INTEGER.

• An array index is miscalculated.

• The calling routine has fewer arguments than required.

• A pointer is used before it has been defined.