[Bug rtl-optimization/32355] New: [4.3 Regression] ICE in df_lr_verify_transfer_functions, at df-problems.c:1924

["tbm at cyrius dot com" <gcc-bugzilla at gcc dot gnu dot org>]

Another dataflow problem.  This occurs on x86_64-linux, but not on ia64.

(sid)26281:tbm@em64t: ~] /usr/lib/gcc-snapshot/bin/gcc -c -O3
~/enlightenment-handlers.c
/home/tbm/enlightenment-handlers.c: In function 'doSignalsSetup':
/home/tbm/enlightenment-handlers.c:32: internal compiler error: in
df_lr_verify_transfer_functions, at df-problems.c:1924
Please submit a full bug report, [...]

Testcase:


typedef struct
{
}
__sigset_t;
typedef struct
{
    char coredump;
}
EMode;
extern EMode Mode;
struct sigaction
{
  __sigset_t sa_mask;
  int sa_flags;
};
doSignalsSetup (void)
{
  static const int signals[] = {
    1, 2 , 3, 4, 6, 8, 11, 13, 14, 15, 10, 12, 17, 7
  };
  unsigned int i, sig;
  struct sigaction sa;
  for (i = 0; i < sizeof (signals) / sizeof (int); i++)
    {
      sig = signals[i];
      if (Mode.coredump && (sig == 4 || sig == 8))
        continue;
      sa.sa_flags = (sig == 17);
      sigemptyset (&sa.sa_mask);
    }
}


-- 
           Summary: [4.3 Regression] ICE in df_lr_verify_transfer_functions,
                    at df-problems.c:1924
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com
GCC target triplet: x86_64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32355