1 // RUN: %clang_cc1 -verify %s -std=c++17 -Weverything -Wno-deprecated -Wno-float-equal
2 // RUN: %clang_cc1 -verify %s -std=c++2a -Wdeprecated
3 
4 static enum E1 {} e1, e1b;
5 static enum E2 {} e2;
6 static double d;
7 extern void f();
8 extern bool b;
9 
10 void f() {
11   void(e1 * e1);
12   void(e1 * e2); // expected-warning {{arithmetic between different enumeration types}}
13   void(e1 * d); // expected-warning {{arithmetic between enumeration type 'enum E1' and floating-point type 'double'}}
14   void(d * e1); // expected-warning {{arithmetic between floating-point type 'double' and enumeration type 'enum E1'}}
15 
16   void(e1 + e1);
17   void(e1 + e2); // expected-warning {{arithmetic between different enumeration types}}
18   void(e1 + d); // expected-warning {{arithmetic between enumeration type 'enum E1' and floating-point type 'double'}}
19   void(d + e1); // expected-warning {{arithmetic between floating-point type 'double' and enumeration type 'enum E1'}}
20 
21 #if __cplusplus > 201703L
22   void(e1 <=> e1b); // expected-error {{include <compare>}}
23   void(e1 <=> e2); // expected-error {{invalid operands}}
24   void(e1 <=> d); // expected-error {{invalid operands}}
25   void(d <=> e1); // expected-error {{invalid operands}}
26 #endif
27 
28   void(e1 < e1b);
29   void(e1 < e2); // expected-warning {{comparison of different enumeration types}}
30   void(e1 < d); // expected-warning {{comparison of enumeration type 'enum E1' with floating-point type 'double'}}
31   void(d < e1); // expected-warning {{comparison of floating-point type 'double' with enumeration type 'enum E1'}}
32 
33   void(e1 == e1b);
34   void(e1 == e2); // expected-warning {{comparison of different enumeration types}}
35   void(e1 == d); // expected-warning {{comparison of enumeration type 'enum E1' with floating-point type 'double'}}
36   void(d == e1); // expected-warning {{comparison of floating-point type 'double' with enumeration type 'enum E1'}}
37 
38   void(b ? e1 : e1b);
39   void(b ? e1 : e2); // expected-warning {{conditional expression between different enumeration types}}
40   void(b ? e1 : d); // expected-warning {{conditional expression between enumeration type 'enum E1' and floating-point type 'double'}}
41   void(b ? d : e1); // expected-warning {{conditional expression between floating-point type 'double' and enumeration type 'enum E1'}}
42 
43   void(e1 = e1b);
44   void(e1 = e2); // expected-error {{incompatible}}
45   void(e1 = d); // expected-error {{incompatible}}
46   void(d = e1); // FIXME: Should we warn on this?
47 
48   void(e1 += e1b); // expected-error {{incompatible}}
49   void(e1 += e2); // expected-error {{incompatible}}
50   void(e1 += d); // expected-error {{incompatible}}
51   void(d += e1); // expected-warning {{compound assignment of floating-point type 'double' from enumeration type 'enum E1'}}
52 }
53