How to suppress warnings for 'void*' to 'foo*' conversions (reduced from errors by -fpermissive)

Question

I\'m trying to compile some c code with g++ (yes, on purpose). I\'m getting errors like (for example):

error: invalid conversion from \'void*\' to \'unsigned cha         


        

Answer 1

How do I disable warnings (globaly) for conversions from void* to other pointer types?

Well it might require direct interaction with compiler's code. This is probably not what you want. You want to fix your code. First, these are not warnings but errors. You need to cast void* as you can not convert a void* to anything without casting it first (it is possible in C however which is less type safe as C++ is).

For example you would need to do

void* buffer = operator new(100);
unsigned char* etherhead = static_cast(buffer);
                                  ^
                                 cast

If you want a dynamically allocated buffer of 100 unsigned char then you are better off doing this

unsigned char* p = new unsigned char[100];

and avoiding the cast.

void pointers