You don't say for which processor / board this is
You don't need to verify unless you don't trust the compiler. If you're really want to know, you can print the addresses of the variables and I think that you can use avr-objdump (for AVR).
That would be ostrich policy; stick your head in the sand and pretend that the problem is not there because you don't see it 
Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project 
See About the IDE 1.x category.