Answers for "What does segmentation fault mean, and how can we diagnose it?"

segmentation fault

Segfaults are caused by a program trying to read or write an illegal memory location

Segmentation fault

A segmentation fault 

(also known as a segfault) is a typical cause of programme crashes,

and it's often linked to a file called core. Segfaults occur when a programme attempts
to read or write to an invalid memory address.