8   (void)(a < a); // expected-error {{invalid operands}}  in f()
9   (void)(a > a); // expected-error {{invalid operands}}  in f()
10   (void)(a <= a); // expected-error {{invalid operands}}  in f()
11   (void)(a >= a); // expected-error {{invalid operands}}  in f()
15   (void)(a < b); // expected-error {{invalid operands}}  in f()
16   (void)(a > b); // expected-error {{invalid operands}}  in f()
17   (void)(a <= b); // expected-error {{invalid operands}}  in f()
18   (void)(a >= b); // expected-error {{invalid operands}}  in f()
22   (void)(b < a); // expected-error {{invalid operands}}  in f()
23   (void)(b > a); // expected-error {{invalid operands}}  in f()
24   (void)(b <= a); // expected-error {{invalid operands}}  in f()
25   (void)(b >= a); // expected-error {{invalid operands}}  in f()
29   (void)(a < pi); // expected-error {{invalid operands}}  in f()
30   (void)(a > pi); // expected-error {{invalid operands}}  in f()
31   (void)(a <= pi); // expected-error {{invalid operands}}  in f()
32   (void)(a >= pi); // expected-error {{invalid operands}}  in f()
36   (void)(pi < a); // expected-error {{invalid operands}}  in f()
37   (void)(pi > a); // expected-error {{invalid operands}}  in f()
38   (void)(pi <= a); // expected-error {{invalid operands}}  in f()
39   (void)(pi >= a); // expected-error {{invalid operands}}  in f()
43   (void)(b < pi); // expected-error {{invalid operands}}  in f()
44   (void)(b > pi); // expected-error {{invalid operands}}  in f()
45   (void)(b <= pi); // expected-error {{invalid operands}}  in f()
46   (void)(b >= pi); // expected-error {{invalid operands}}  in f()
50   (void)(pi < b); // expected-error {{invalid operands}}  in f()
51   (void)(pi > b); // expected-error {{invalid operands}}  in f()
52   (void)(pi <= b); // expected-error {{invalid operands}}  in f()
53   (void)(pi >= b); // expected-error {{invalid operands}}  in f()
57   (void)(b < b); // expected-error {{invalid operands}}  in f()
58   (void)(b > b); // expected-error {{invalid operands}}  in f()
59   (void)(b <= b); // expected-error {{invalid operands}}  in f()
60   (void)(b >= b); // expected-error {{invalid operands}}  in f()
64   (void)(pi < pi); // expected-error {{invalid operands}}  in f()
65   (void)(pi > pi); // expected-error {{invalid operands}}  in f()
66   (void)(pi <= pi); // expected-error {{invalid operands}}  in f()
67   (void)(pi >= pi); // expected-error {{invalid operands}}  in f()
74   (void)(c == p); // expected-error {{invalid operands}}  in g()