1 // Force x86-64 because some of our heuristics are actually based
2 // on integer sizes.
3
4 // RUN: %clang_cc1 -triple x86_64-apple-darwin -fsyntax-only -pedantic -verify -Wsign-compare %s
5
test0(long a,unsigned long b)6 int test0(long a, unsigned long b) {
7 enum EnumA {A};
8 enum EnumB {B};
9 enum EnumC {C = 0x10000};
10 return
11 // (a,b)
12 (a == (unsigned long) b) + // expected-warning {{comparison of integers of different signs}}
13 (a == (unsigned int) b) +
14 (a == (unsigned short) b) +
15 (a == (unsigned char) b) +
16 ((long) a == b) + // expected-warning {{comparison of integers of different signs}}
17 ((int) a == b) + // expected-warning {{comparison of integers of different signs}}
18 ((short) a == b) + // expected-warning {{comparison of integers of different signs}}
19 ((signed char) a == b) + // expected-warning {{comparison of integers of different signs}}
20 ((long) a == (unsigned long) b) + // expected-warning {{comparison of integers of different signs}}
21 ((int) a == (unsigned int) b) + // expected-warning {{comparison of integers of different signs}}
22 ((short) a == (unsigned short) b) +
23 ((signed char) a == (unsigned char) b) +
24 (a < (unsigned long) b) + // expected-warning {{comparison of integers of different signs}}
25 (a < (unsigned int) b) +
26 (a < (unsigned short) b) +
27 (a < (unsigned char) b) +
28 ((long) a < b) + // expected-warning {{comparison of integers of different signs}}
29 ((int) a < b) + // expected-warning {{comparison of integers of different signs}}
30 ((short) a < b) + // expected-warning {{comparison of integers of different signs}}
31 ((signed char) a < b) + // expected-warning {{comparison of integers of different signs}}
32 ((long) a < (unsigned long) b) + // expected-warning {{comparison of integers of different signs}}
33 ((int) a < (unsigned int) b) + // expected-warning {{comparison of integers of different signs}}
34 ((short) a < (unsigned short) b) +
35 ((signed char) a < (unsigned char) b) +
36
37 // (A,b)
38 (A == (unsigned long) b) +
39 (A == (unsigned int) b) +
40 (A == (unsigned short) b) +
41 (A == (unsigned char) b) +
42 ((long) A == b) +
43 ((int) A == b) +
44 ((short) A == b) +
45 ((signed char) A == b) +
46 ((long) A == (unsigned long) b) +
47 ((int) A == (unsigned int) b) +
48 ((short) A == (unsigned short) b) +
49 ((signed char) A == (unsigned char) b) +
50 (A < (unsigned long) b) +
51 (A < (unsigned int) b) +
52 (A < (unsigned short) b) +
53 (A < (unsigned char) b) +
54 ((long) A < b) +
55 ((int) A < b) +
56 ((short) A < b) +
57 ((signed char) A < b) +
58 ((long) A < (unsigned long) b) +
59 ((int) A < (unsigned int) b) +
60 ((short) A < (unsigned short) b) +
61 ((signed char) A < (unsigned char) b) +
62
63 // (a,B)
64 (a == (unsigned long) B) +
65 (a == (unsigned int) B) +
66 (a == (unsigned short) B) +
67 (a == (unsigned char) B) +
68 ((long) a == B) +
69 ((int) a == B) +
70 ((short) a == B) +
71 ((signed char) a == B) +
72 ((long) a == (unsigned long) B) +
73 ((int) a == (unsigned int) B) +
74 ((short) a == (unsigned short) B) +
75 ((signed char) a == (unsigned char) B) +
76 (a < (unsigned long) B) + // expected-warning {{comparison of integers of different signs}}
77 (a < (unsigned int) B) +
78 (a < (unsigned short) B) +
79 (a < (unsigned char) B) +
80 ((long) a < B) +
81 ((int) a < B) +
82 ((short) a < B) +
83 ((signed char) a < B) +
84 ((long) a < (unsigned long) B) + // expected-warning {{comparison of integers of different signs}}
85 ((int) a < (unsigned int) B) + // expected-warning {{comparison of integers of different signs}}
86 ((short) a < (unsigned short) B) +
87 ((signed char) a < (unsigned char) B) +
88
89 // (C,b)
90 (C == (unsigned long) b) +
91 (C == (unsigned int) b) +
92 (C == (unsigned short) b) +
93 (C == (unsigned char) b) +
94 ((long) C == b) +
95 ((int) C == b) +
96 ((short) C == b) +
97 ((signed char) C == b) +
98 ((long) C == (unsigned long) b) +
99 ((int) C == (unsigned int) b) +
100 ((short) C == (unsigned short) b) +
101 ((signed char) C == (unsigned char) b) +
102 (C < (unsigned long) b) +
103 (C < (unsigned int) b) +
104 (C < (unsigned short) b) +
105 (C < (unsigned char) b) +
106 ((long) C < b) +
107 ((int) C < b) +
108 ((short) C < b) +
109 ((signed char) C < b) +
110 ((long) C < (unsigned long) b) +
111 ((int) C < (unsigned int) b) +
112 ((short) C < (unsigned short) b) +
113 ((signed char) C < (unsigned char) b) +
114
115 // (a,C)
116 (a == (unsigned long) C) +
117 (a == (unsigned int) C) +
118 (a == (unsigned short) C) +
119 (a == (unsigned char) C) +
120 ((long) a == C) +
121 ((int) a == C) +
122 ((short) a == C) +
123 ((signed char) a == C) +
124 ((long) a == (unsigned long) C) +
125 ((int) a == (unsigned int) C) +
126 ((short) a == (unsigned short) C) +
127 ((signed char) a == (unsigned char) C) +
128 (a < (unsigned long) C) + // expected-warning {{comparison of integers of different signs}}
129 (a < (unsigned int) C) +
130 (a < (unsigned short) C) +
131 (a < (unsigned char) C) +
132 ((long) a < C) +
133 ((int) a < C) +
134 ((short) a < C) +
135 ((signed char) a < C) +
136 ((long) a < (unsigned long) C) + // expected-warning {{comparison of integers of different signs}}
137 ((int) a < (unsigned int) C) + // expected-warning {{comparison of integers of different signs}}
138 ((short) a < (unsigned short) C) +
139 ((signed char) a < (unsigned char) C) +
140
141 // (0x80000,b)
142 (0x80000 == (unsigned long) b) +
143 (0x80000 == (unsigned int) b) +
144 (0x80000 == (unsigned short) b) +
145 (0x80000 == (unsigned char) b) +
146 ((long) 0x80000 == b) +
147 ((int) 0x80000 == b) +
148 ((short) 0x80000 == b) +
149 ((signed char) 0x80000 == b) +
150 ((long) 0x80000 == (unsigned long) b) +
151 ((int) 0x80000 == (unsigned int) b) +
152 ((short) 0x80000 == (unsigned short) b) +
153 ((signed char) 0x80000 == (unsigned char) b) +
154 (0x80000 < (unsigned long) b) +
155 (0x80000 < (unsigned int) b) +
156 (0x80000 < (unsigned short) b) +
157 (0x80000 < (unsigned char) b) +
158 ((long) 0x80000 < b) +
159 ((int) 0x80000 < b) +
160 ((short) 0x80000 < b) +
161 ((signed char) 0x80000 < b) +
162 ((long) 0x80000 < (unsigned long) b) +
163 ((int) 0x80000 < (unsigned int) b) +
164 ((short) 0x80000 < (unsigned short) b) +
165 ((signed char) 0x80000 < (unsigned char) b) +
166
167 // (a,0x80000)
168 (a == (unsigned long) 0x80000) +
169 (a == (unsigned int) 0x80000) +
170 (a == (unsigned short) 0x80000) +
171 (a == (unsigned char) 0x80000) +
172 ((long) a == 0x80000) +
173 ((int) a == 0x80000) +
174 ((short) a == 0x80000) +
175 ((signed char) a == 0x80000) +
176 ((long) a == (unsigned long) 0x80000) +
177 ((int) a == (unsigned int) 0x80000) +
178 ((short) a == (unsigned short) 0x80000) +
179 ((signed char) a == (unsigned char) 0x80000) +
180 (a < (unsigned long) 0x80000) + // expected-warning {{comparison of integers of different signs}}
181 (a < (unsigned int) 0x80000) +
182 (a < (unsigned short) 0x80000) +
183 (a < (unsigned char) 0x80000) +
184 ((long) a < 0x80000) +
185 ((int) a < 0x80000) +
186 ((short) a < 0x80000) +
187 ((signed char) a < 0x80000) +
188 ((long) a < (unsigned long) 0x80000) + // expected-warning {{comparison of integers of different signs}}
189 ((int) a < (unsigned int) 0x80000) + // expected-warning {{comparison of integers of different signs}}
190 ((short) a < (unsigned short) 0x80000) +
191 ((signed char) a < (unsigned char) 0x80000) +
192
193 10
194 ;
195 }
196
test1(int i)197 int test1(int i) {
198 enum en { zero };
199 return i > zero;
200 }
201
202 enum E { e };
test2(int i,void * vp)203 void test2(int i, void *vp) {
204 if (test1 == vp) { } // expected-warning{{equality comparison between function pointer and void pointer}}
205 if (test1 == e) { } // expected-error{{comparison between pointer and integer}}
206 if (vp < 0) { }
207 if (test1 < e) { } // expected-error{{comparison between pointer and integer}}
208 }
209
210 // PR7536
211 static const unsigned int kMax = 0;
pr7536()212 int pr7536() {
213 return (kMax > 0);
214 }
215
216 // -Wsign-compare should not warn when ?: operands have different signedness.
217 // This will be caught by -Wsign-conversion
test3()218 void test3() {
219 unsigned long a;
220 signed long b;
221 (void) (true ? a : b);
222 (void) (true ? (unsigned int)a : (signed int)b);
223 (void) (true ? b : a);
224 (void) (true ? (unsigned char)b : (signed char)a);
225 }
226