gcc/testsuite/gcc.dg/uninit-13-O0.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-Wuninitialized" } */
   3
   4 typedef _Complex float C;
   5 C foo()
   6 {
   7   C f;
   8   __imag__ f = 0;       /* { dg-warning "is used" "unconditional" { xfail *-*-* } } */
   9   return f;
  10 }