warning:assignment makes pointer from integer without a cast

Question

Its quite a common question but I have not got my answer so asking it again.

I have structers defined as:

struct f_lock{
              int x;
                


        

Answer 1

Did you also get the error implicit declaration of function ‘new_node’? Because in that case, you probably forgot to declare new_node in the module where you're calling it. (If you're not getting that error, recompile with -Wall to turn more warnings on.)

Explanation of the warning message: if new_node has not been declared properly, the compiler will assume it returns int, which is a kind of default return type (for historical reasons).