gcc/testsuite/gcc.dg/pr51990-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2" } */
   3
   4 int y;
   5 extern int foo (int, ...) __attribute__((pure));
   6
   7 int
   8 zzz (char *s1, char *s2, int len, int *q, int c)
   9 {
  10   int z = 5;
  11   unsigned int i, b;
  12   struct s { char a[z]; };
  13   struct s x;
  14   int y_tmp = 5;
  15
  16   for (i = 0; i < len; i++)
  17     s1[i] = s2[i];
  18
  19   b = z & 0x3;
  20
  21   len += (b == 0 ? 0 : 1) + z;
  22
  23   *q = len;
  24
  25  if (c)
  26    y_tmp = foo (z, x, x) + 4;
  27
  28  z = foo (z, x, x) + 4;
  29  y = y_tmp;
  30
  31  return  z;
  32 }