gcc/testsuite/gcc.dg/pr35430.c

   1 /* PR c/35430 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-Wsign-compare" } */
   4
   5 void
   6 foo (__complex__ int i)
   7 {
   8   i == 0u;
   9   i == ~1u;     /* { dg-warning "comparison between signed and unsigned integer expressions" } */
  10 }