When I use malloc in a C program, I get a warning:
warning: incompatible implicit declaration of built-in function 'malloc' [enabled by default]
I can then include <malloc.h> or <stdlib.h> to get rid of the warning although it works without it as well.
So I was wondering, what's the difference between these headers and which one does gcc links when I don't include anything?
(I'm using ubuntu 12.04 64-bit with gcc 4.6.3)