You can use them for sure - the compiler still supports them - but nasty stuff will happen if you do it in the Symbian kernel. Presumably there are things you

You can use them for sure - the compiler still supports them - but nasty stuff will happen if you do it in the Symbian kernel. Presumably there are things you don't want to do in C in the kernel - like using heap memory allocation in certain situations or calling printf() or something like that.