[Bug middle-end/35043] ICE in tree-data-ref because signed_type_for_types returns NULL

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-01-31 17:23 -------
Reduced testcase:

typedef long unsigned int size_t;
typedef struct   {
      long double dat[2];
} gsl_complex_long_double;
typedef struct {
    size_t size;
    size_t stride;
    long double *data;
} gsl_vector_complex_long_double;
void gsl_vector_complex_long_double_set_zero (gsl_vector_complex_long_double *
v) 
{
    long double * const data = v->data;
    const size_t n = v->size;
    const size_t stride = v->stride;
    const gsl_complex_long_double zero = { { 0.0L,0.0L} } ;
    size_t i;
    for (i = 0; i < n; i++)     
        *(gsl_complex_long_double *) (data + 2 * i * stride) = zero;
}

tree.c:signed_or_unsigned_type_for doesn't handle bit_size_type specially
which has TImode and a precision of 68.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|tree-optimization           |middle-end
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-01-31 17:23:03
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35043