Why GDB jumps unpredictably between lines and prints variables as “”?

Question

Can anyone explain this behavior of gdb?

900         memset(&new_ckpt_info,\'\\0\',sizeof(CKPT_INFO));
(gdb)
**903         prev_offset   = cp_node->of         


        

Answer 1

Declare found as "volatile". This should tell the compiler to NOT optimize it out.

volatile int found = 0;