gcc/testsuite/gcc.dg/auto-init-uninit-17.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O -Wuninitialized -ftrivial-auto-var-init=zero" } */
   3
   4 typedef _Complex float C;
   5 C foo(int cond)
   6 {
   7   C f;
   8   __imag__ f = 0;
   9   if (cond)
  10     {
  11       __real__ f = 1;
  12       return f;
  13     }
  14   return f;     /* { dg-warning "may be used" "unconditional" } */
  15 }