Expert: Narendra - 8/13/2004

Question
Narendra,

I have doubts on the following:

1. misaligned memory access - provide me a C program which does this error and tell me how you fix that.

2. Bus error & segmentation violation - what are these terms? Any C program example for these and how you fix them.

Best Regards,
Rajesh

Answer
I don't have any sample programs to show those errors.
But, it is easy to produce a "Segmentation Fault" program.

Compile and execute this program:

main()
{
   int *i = NULL;

   *i = 10;
}

Segmentation fault is the most frequently acquinted problem. It occurs because your program has tried to write into readonly areas of its address space.
Bus error occurs due to error in the address bus.
I haven't heard about "Mis-Alligned memory access" error.

-ssnkumar