[Bug c/54428] ICE in gimplify_expr, at gimplify.c:7591

["polacek at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54428

--- Comment #2 from Marek Polacek <polacek at redhat dot com> 2012-08-31 05:46:07 UTC ---
Reduced.  Note that the typedef is needed to trigger ICE.

typedef double _Complex fftw_complex;
extern fftw_complex *fftw_alloc_complex (int);

int
cf (int n)
{
  int K = 75; 
  int nf = 1024;
  int i;
  fftw_complex *w = fftw_alloc_complex (nf);
  fftw_complex *f = fftw_alloc_complex (nf);
  double S[K * sizeof (double)];
  double s_val = S[n];
  fftw_complex *b = fftw_alloc_complex (nf);
  fftw_complex *rt = fftw_alloc_complex (nf);
  for (i = 0; i < nf; ++i)
    {   
      rt[i] = f[i] - s_val * __builtin_cpow (w[i], K) * b[i];
    }   
}