1 /* Test disabling -Wtype-limits. */
2 /* { dg-do compile } */
3 /* { dg-options "-Wextra -Wno-type-limits" } */
4 extern void assert (int);
5
a(unsigned char x)6 void a (unsigned char x)
7 {
8 if (x < 0) return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
9 if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
10 if (0 > x) return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
11 if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
12 if (x <= 255) /* { dg-bogus "comparison is always true due to limited range of data type" } */
13 return;
14 if (255 >= x) /* { dg-bogus "comparison is always true due to limited range of data type" } */
15 return;
16 if ((int)x <= 255)
17 return;
18 if (255 >= (unsigned char) 1)
19 return;
20
21 }
22
b(unsigned short x)23 void b (unsigned short x)
24 {
25 if (x < 0) return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
26 if (x >= 0) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
27 if (0 > x) return;/* { dg-bogus "comparison is always false due to limited range of data type" } */
28 if (0 <= x) return;/* { dg-bogus "comparison is always true due to limited range of data type" } */
29 }
30
c(unsigned int x)31 void c (unsigned int x)
32 {
33 if (x < 0) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
34 if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
35 if (0 > x) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
36 if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
37 if (1U >= 0) return;
38 if (1U < 0) return;
39 if (0 <= 1U) return;
40 if (0 > 1U) return;
41 }
42
d(unsigned long x)43 void d (unsigned long x)
44 {
45 if (x < 0) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
46 if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
47 if (0 > x) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
48 if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
49 }
50
e(unsigned long long x)51 void e (unsigned long long x)
52 {
53 if (x < 0) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
54 if (x >= 0) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
55 if (0 > x) return;/* { dg-bogus "comparison of unsigned expression < 0 is always false" } */
56 if (0 <= x) return;/* { dg-bogus "comparison of unsigned expression >= 0 is always true" } */
57 }
58
test(int x)59 int test (int x)
60 {
61 if ((long long)x <= 0x123456789ABCLL) /* { dg-bogus "comparison is always true due to limited range of data type" } */
62 return 1;
63 else
64 return 0;
65 }
66
67 template <typename Int, Int D>
f(Int x)68 void f(Int x) {
69 assert(0 <= x and x <= D); // { dg-bogus "comparison is always true due to limited range of data type" }
70 }
71
ff(void)72 void ff(void) {
73 f<unsigned char, 2>(5);
74 f<signed char, 2>(5);
75 }
76
77 template <typename Int, Int D>
g(void)78 void g(void) {
79 assert(0 <= D);
80 }
gg(void)81 void gg(void) {
82 g<unsigned char, 2>();
83 }
84
85