gcc/testsuite/gcc.c-torture/execute/20180226-1.c

   1 /* PR rtl-optimization/83496 */
   2 /* Reported by Hauke Mehrtens <gcc@hauke-m.de> */
   3
   4 extern void abort (void);
   5
   6 typedef unsigned long mp_digit;
   7
   8 typedef struct { int used, alloc, sign; mp_digit *dp; } mp_int;
   9
  10 int mytest(mp_int *a, mp_digit b) __attribute__((noclone, noinline));
  11
  12 int mytest(mp_int *a, mp_digit b)
  13 {
  14   if (a->sign == 1)
  15     return -1;
  16   if (a->used > 1)
  17     return 1;
  18   if (a->dp[0] > b)
  19     return 1;
  20   if (a->dp[0] < b)
  21     return -1;
  22   return 0;
  23 }
  24
  25 int main (void)
  26 {
  27   mp_int i = { 2, 0, -1 };
  28   if (mytest (&i, 0) != 1)
  29     abort ();
  30   return 0;
  31 }