[Bug middle-end/39360] [4.4 Regression] ICE in referenced_var_lookup, at tree-dfa.c:563

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

------- Comment #5 from rguenth at gcc dot gnu dot org  2009-03-04 16:40 -------
Reduced testcase:

typedef unsigned short u16;
struct snd_kcontrol_new { };
typedef u16 hda_nid_t;
struct alc_spec {
    struct snd_kcontrol_new *cap_mixer;
    unsigned int num_adc_nids;
};
static struct snd_kcontrol_new alc_capture_mixer1[] = { };
static struct snd_kcontrol_new alc_capture_mixer2[] = { };
static struct snd_kcontrol_new alc_capture_mixer3[] = { };
static void set_capture_mixer(struct alc_spec *spec)
{
  static struct snd_kcontrol_new *caps[3] = {
      alc_capture_mixer1,   alc_capture_mixer2,   alc_capture_mixer3
  };
  if (spec->num_adc_nids > 0 && spec->num_adc_nids <= 3)
    spec->cap_mixer = caps[spec->num_adc_nids - 1];
}
static hda_nid_t alc662_adc_nids[1] = { 0x09, };
int patch_alc662(struct hda_codec *codec)
{
  struct alc_spec *spec;
  spec->num_adc_nids = (sizeof(alc662_adc_nids) / sizeof((alc662_adc_nids)[0])
                        + (sizeof(char[1 - 2 *
!!(__builtin_types_compatible_p(typeof(alc662_adc_nids),
typeof(&alc662_adc_nids[0])))]) - 1));
  if (!spec->cap_mixer)
    set_capture_mixer(spec);
}


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39360