Re: ... discard qualifiers ...

["Martin v. Loewis" <martin at loewis dot home dot cs dot tu-berlin dot de>]

> is there a way other than '-fwritable-strings' to avoid errors
> in this case :
> typedef void * Pointer;
> 
> void foo(const Pointer p)
> {
> ...
> }
> 
> void main()
> {
> 	foo( "Hello World !" );
> }

Well, this *is* an error, in C++, and g++ only accepts it as an
extension. There is a number of ways to correct this error:

typedef void * Pointer;

void foo(const Pointer p)
{
}

int main()
{
	foo( (Pointer)("Hello World !") );
}

Note that this has undefined behaviour if the object behind foo::p is
modified. To correct this also, you can do

typedef void * Pointer;

void foo(const Pointer p)
{
}

int main()
{
	char hw[] = "Hello World !";
	foo(hw);
}

If you need further information why your code is incorrect, or why
these changes fix the problem, please post them in
comp.lang.c++.moderated.

Regards,
Martin