gcc/testsuite/c-c++-common/Wunused-var-17.c

   1 /* PR c++/93557 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O2 -Wunused-but-set-variable" } */
   4
   5 typedef int VI __attribute__((vector_size (sizeof (int) * 4)));
   6 typedef float VF __attribute__((vector_size (sizeof (float) * 4)));
   7
   8 void
   9 foo (VI *p, VF *q)
  10 {
  11   VI a = (VI) { 1, 2, 3, 4 };                   /* { dg-bogus "set but not used" } */
  12   q[0] = __builtin_convertvector (a, VF);
  13   VI b = p[1];                                  /* { dg-bogus "set but not used" } */
  14   q[1] = __builtin_convertvector (b, VF);
  15   VF c = (VF) { 5.0f, 6.0f, 7.0f, 8.0f };       /* { dg-bogus "set but not used" } */
  16   p[2] = __builtin_convertvector (c, VI);
  17   VF d = q[3];                                  /* { dg-bogus "set but not used" } */
  18   p[3] = __builtin_convertvector (d, VI);
  19 }