Ravi Kiran <ravi.kolanpaka@xxxxxxxxx> writes: > Whenever I give break points in nodenestloop.c, it goes to main.c and > finally the process ends there, The control never comes back to > nodenestloop, how can we the proces constrained only to nodenestloop. If gdb sort-of-works but seems to get confused about specific breakpoint locations, try recompiling the program at optimization level -O0. regards, tom lane