[Bug c++/52337] memory hole

["redi at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52337

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-22 09:35:44 UTC ---
(do you have something against whitespace?!)

could you explain exactly what you think GCC does wrong, and what you expect to
happen?

I'm afraid I don't understand your report.

Here's the same code, once more with formatting:

typedef char**(*(*v[4])(int*p[],float (*f)(int a[])))[][6];

class e{ v i,a,b;
public:
  int get();
  friend int g();
} ai;

int e::get() {
  long h1,h2,h3;
  h1=(long)&i;
  h2=(long)&a;
  h3=(long)&b;
  __builtin_printf("%p\n%p   %lx\n%p   %lx\noriginal pointer is:
%p\n",i,a,h2-h1,b,h3-h2, &i);
  return 0;
}
int g(){ return ai.get(); }

class pgabstract{
  v i,a,b;
public:
  int get() {return vget();}
  int(*p)();
  virtual void t()=0;
  int vget();
} *m[4];

int pgabstract::vget()
{
  long h1,h2,h3;
  h1=(long)&i;
  h2=(long)&a;
  h3=(long)&b;
  __builtin_printf("%p\n%p   %lx\n%p   %lx\noriginal pointer is:
%p\n",i,a,h2-h1,b,h3-h2, &i);
  return 0;
}
int main(){
  m[3]=(pgabstract*)&ai;
  m[3]->get();
}

When I run this I get:

0x600b48
0x600b68   20
0x600b88   20
original pointer is: 0x600b48