gcc/testsuite/gcc.dg/Wunused-parm-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wunused -W" } */
   3
   4 long
   5 f1 (unsigned long long x)
   6 {
   7   unsigned long long a = 1;
   8   const union { unsigned long long l; unsigned int p[2]; } b = { .l = x };
   9   const union { unsigned long long l; unsigned int p[2]; } c = { .l = a };
  10   return b.p[0] + c.p[0];
  11 }
  12
  13 int
  14 f2 (int x, int y)
  15 {
  16   int a = 1;
  17   int b[] = { 1, 2, x, a, 3, 4 };
  18   return b[y];
  19 }
  20
  21 int
  22 f3 (int a,      /* { dg-warning "unused parameter" } */
  23     int b,      /* { dg-warning "set but not used" } */
  24     int c)
  25 {
  26   b = 1;
  27   c = 1;
  28   return c;
  29 }