Assigning the value from the void pointer to a non void pointer

Question

I have a situation where in the address inside the void pointer to be copied to a another pointer. Doing this without a type cast gives no warnings or errors. The pseudo code looks like

structA A;
void * p = &A;
structA * B = p;// Would like to conform this step 

I don't foresee any problems with this. But since this operation is used over a lot of places, I would like to conform whether it can have any replications. Also is there any compiler dependency?

Answer 1

No, this is fine and 100% standard.

A void * can be converted to and from any other data/object pointer without problems.

Note that data/object restriction: function pointers do not convert to/from void * .

This is the reason why you shouldn't cast the return value of malloc() , which returns a void * .

Answer 2

In C a void * is implicitly compatible with any pointer. That why you don't need to cast when eg passing pointers of any type to functions taking void * arguments, or when assigning to pointer (still of any type) from function returning void * (here malloc is a good example).