> In the function part of the assembly > file , I noticed that the depending on > the "SIZE" of the array , it allocates > memory on stack as shown in the below > table . > > Array Size Actual stack allocation > > 0 - 4 = 4 > 5 - 16 = 24 > 17 - 32 = 40 > 33 - 48 = 56 > 49 - 64 = 72 > > Can anybody please explain me , > what is the reason behind this ? > > Why is it that only the required > amount of stack is not allocated ? compilers tend to optimize by keeping the stack aligned on certin boundries and also some machines always require that say the stack point must always be on a quad word boundry. Do you actually use the variable at all ? a really simple compliler optimizeation is to remove anything that is not referenced even when you dont use and optimizeation flags. -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
