__label__ , internal compiler error:segmentation fault

[sumanth <sumanth.gundapneni@xxxxxxxxxxxxxxxxxx>]

Hi,
   I am encountering a segmentation fault : internal compiler error  
after running this torture case.
 

#ifdef STACK_SIZE
#define DEPTH ((STACK_SIZE) / 512 + 1)
#else
#define DEPTH 1000
#endif

#if ! defined (NO_LABEL_VALUES) && !defined (NO_TRAMPOLINES)
x(a)
{
 __label__ xlab;
 void y(a)
   {
     if (a==0)
       goto xlab;
     y (a-1);
   }
 y (a);
xlab:;
 return a;
}
#endif

main ()
{
#if ! defined (NO_LABEL_VALUES) && !defined (NO_TRAMPOLINES)
 if (x (DEPTH) != DEPTH)
   abort ();
#endif
 exit (0);
}

After seeing similar test cases as well, my compiler crashes because of 
__label__ xlab.
Can any one point me to solution for locally declared labels in the 
sense , any macros I should define in particular
to handle __label__.

Thanks in advance,
Sumanth