🚀 go-pugleaf

The code

bool Class::isEqual(const Object& ob) const
{ return this == castdown(&ob); }

generates the warning

Class.c: In method `int  Class::isEqual (const class Object&)const ':
Class.c:188: warning: argument passing of non-`const *' pointer from `const *'

My guess is that this warning means either that &ob is not of const * type,
or that the return value of castdown(&ob) is not of const * type.

1) ob is of const type, so &ob should be of const * type.
2) castdown is defined in a macro for each class as

static classname* castdown(Object* p)		{ return (classname*)p; } \
static const classname* castdown(const Object* p) \
	{ return (const classname*)p; } \

So g++ should choose the const function, and thus return const * from it.
I'm not sure what's going wrong here, but something seems to be.

The pertinent code is in the NIHCL 3.0, files Object.h and Class.c.

--
Jason Merrill
jason@jarthur.claremont.edu