Re: layout of the g++ virtual tables

[Martin von Loewis <martin at mira dot isdn dot cs dot tu-berlin dot de>]

> Wouldn't the first 2 words be used for something like that by any
> chance?

Both are used for the 'dynamic cast' and 'run-time type
identification' features. You can easily trigger its usage with

#include <typeinfo>
struct Foo{
  virtual ~Foo();
};

struct Bar:Foo
{};

Foo *f()
{
  return new Bar;
}

const char* g()
{
  return typeid(*f()).name();
}

Bar* h()
{
  return dynamic_cast<Bar*>(f());
}

(Breaking it into function, to trick compilation with -O2.
 From the generated code, it appears that both g and h could
 be compiled into a constant, otherwise)

Hope this helps,
Martin