1 // RUN: %check_clang_tidy %s bugprone-suspicious-enum-usage %t -- -config="{CheckOptions: [{key: bugprone-suspicious-enum-usage.StrictMode, value: 1}]}" --
2
3 enum A {
4 A = 1,
5 B = 2,
6 C = 4,
7 D = 8,
8 E = 16,
9 F = 32,
10 G = 63
11 };
12
13 // CHECK-MESSAGES: :[[@LINE+2]]:1: warning: enum type seems like a bitmask (contains mostly power-of-2 literals) but a literal is not power-of-2
14 // CHECK-MESSAGES: :76:7: note: used here as a bitmask
15 enum X {
16 X = 8,
17 Y = 16,
18 Z = 4,
19 ZZ = 3
20 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: enum type seems like a bitmask (contains mostly power-of-2 literals), but this literal is not a power-of-2 [bugprone-suspicious-enum-usage]
21 // CHECK-MESSAGES: :70:13: note: used here as a bitmask
22 };
23 // CHECK-MESSAGES: :[[@LINE+2]]:1: warning: enum type seems like a bitmask (contains mostly power-of-2 literals) but some literals are not power-of-2
24 // CHECK-MESSAGES: :73:8: note: used here as a bitmask
25 enum PP {
26 P = 2,
27 Q = 3,
28 // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: enum type seems like a bitmask (contains mostly power-of-2 literals), but this literal is not a power-of-2
29 // CHECK-MESSAGES: :65:11: note: used here as a bitmask
30 R = 4,
31 S = 8,
32 T = 16,
33 U = 31
34 };
35
36 enum {
37 H,
38 I,
39 J,
40 K,
41 L
42 };
43
44 enum Days {
45 Monday,
46 Tuesday,
47 Wednesday,
48 Thursday,
49 Friday,
50 Saturday,
51 Sunday
52 };
53
bestDay()54 Days bestDay() {
55 return Friday;
56 }
57
trigger()58 int trigger() {
59 if (bestDay() | A)
60 return 1;
61 // CHECK-MESSAGES: :[[@LINE-2]]:17: warning: enum values are from different enum types
62 if (I | Y)
63 return 1;
64 // CHECK-MESSAGES: :[[@LINE-2]]:9: warning: enum values are from different enum types
65 if (P + Q == R)
66 return 1;
67 else if ((S | R) == T)
68 return 1;
69 else
70 int k = ZZ | Z;
71 unsigned p = R;
72 PP pp = Q;
73 p |= pp;
74
75 enum X x = Z;
76 p = x | Z;
77 return 0;
78 }
79
dont_trigger()80 int dont_trigger() {
81 int a = 1, b = 5;
82 int c = a + b;
83 int d = c | H, e = b * a;
84 a = B | C;
85 b = X | Z;
86
87 unsigned bitflag;
88 enum A aa = B;
89 bitflag = aa | C;
90
91 if (Tuesday != Monday + 1 ||
92 Friday - Thursday != 1 ||
93 Sunday + Wednesday == (Sunday | Wednesday))
94 return 1;
95 if (H + I + L == 42)
96 return 1;
97 return 42;
98 }
99