1 /* { dg-do compile } */ 2 /* { dg-options "-std=gnu89" } */ 3 4 int mandel(double _Complex C)5 mandel(double _Complex C) 6 { 7 int py; 8 C = (__extension__ 1.0iF) * (double)py; 9 return cabs(C); /* { dg-warning "incompatible" } */ 10 } 11 12