The following are some preventative techniques for segmentation faults in C++ and C:
During runtime, all pointers in the program must point to a valid memory location.
Always correctly initialize the pointer.
To resolve this, check that the index used to access the array is within the array’s boundaries. Memory releasing twice: A segmentation fault might occur if the same block of memory is freed repeatedly. To correct this, make sure that memory is only freed once and that the memory reference is not used after it has been freed.