Should I worry about “Conditional jump or move depends on uninitialised value(s)”?

Question

If you\'ve used Memcheck (from Valgrind) you\'ll probably be familiar with this message...

Conditional jump or move depends on uninitialized value(s)<

Answer 1

In 64-bits machine. Usually, int takes 4 bytes in memory. But long will take 8 bytes in memory. So simply refer an int value as long format will cause totally incorrect result. An convert is needed in this situation.