2 // RUN:            -Wtautological-unsigned-enum-zero-compare \
5 // RUN:            -Wtautological-unsigned-enum-zero-compare \
17   enum A { A_foo = 0, A_bar, };  in main()
18   enum A a;  in main()
20   enum B : unsigned { B_foo = 0, B_bar, };  in main()
21   enum B b;  in main()
23   enum C : signed { C_foo = 0, C_bar, };  in main()
24   enum C c;  in main()
26   if (a < 0) // unsigned-warning {{comparison of unsigned enum expression < 0 is always false}}  in main()
32   if (0 <= a) // unsigned-warning {{comparison of 0 <= unsigned enum expression is always true}}  in main()
36   if (0 > a) // unsigned-warning {{comparison of 0 > unsigned enum expression is always false}}  in main()
38   if (a >= 0) // unsigned-warning {{comparison of unsigned enum expression >= 0 is always true}}  in main()
45 …if (a < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always fals…  in main()
51 …if (0U <= a) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always tr…  in main()
55 …if (0U > a) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always fals…  in main()
57 …if (a >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always tr…  in main()
62 …if (b < 0) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false…  in main()
68 …if (0 <= b) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always tru…  in main()
72 …if (0 > b) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always false…  in main()
74 …if (b >= 0) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always tru…  in main()
79 …if (b < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always fals…  in main()
85 …if (0U <= b) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always tr…  in main()
89 …if (0U > b) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always fals…  in main()
91 …if (b >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always tr…  in main()
115 …if (c < 0U) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always fals…  in main()
121 …if (0U <= c) // unsigned-signed-warning {{comparison of 0 <= unsigned enum expression is always tr…  in main()
125 …if (0U > c) // unsigned-signed-warning {{comparison of 0 > unsigned enum expression is always fals…  in main()
127 …if (c >= 0U) // unsigned-signed-warning {{comparison of unsigned enum expression >= 0 is always tr…  in main()
137   enum A : unsigned {  in test()
140   enum A a;  in test()
143 …if (a < 0) // unsigned-signed-warning {{comparison of unsigned enum expression < 0 is always false…  in test()