[Bug middle-end/50333] [4.7 Regression] internal compiler error: in extract_ops_from_tree, at gimple.h:1909

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50333

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-09-09 
07:41:50 UTC ---
Reduced testcase:

static inline void 
unext(unsigned int *_ui, unsigned _len, unsigned int _ui0)
{
    unsigned j = 1;
    while (++j<_len)
      ;
    _ui[j-1]=_ui0;
}
unsigned int
ncwrs_urow(unsigned _n, unsigned _k, unsigned int *_u)
{
  unsigned k;
  for(k=2; k<_n; k++)
    unext(_u+1,_k+1,1);
}