|
150
|
1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fsyntax-only -fblocks -Wnull-arithmetic -verify -Wno-string-plus-int -Wno-tautological-pointer-compare %s
|
|
|
2 #include <stddef.h>
|
|
|
3
|
|
|
4 void f() {
|
|
|
5 int a;
|
|
|
6 bool b;
|
|
|
7 void (^c)();
|
|
|
8 class X;
|
|
|
9 void (X::*d) ();
|
|
|
10 extern void e();
|
|
|
11 int f[2];
|
|
|
12 const void *v;
|
|
|
13
|
|
|
14 a = 0 ? NULL + a : a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
15 a = 0 ? NULL - a : a - NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
16 a = 0 ? NULL / a : a / NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \
|
|
|
17 // expected-warning {{division by zero is undefined}}
|
|
|
18 a = 0 ? NULL * a : a * NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
19 a = 0 ? NULL >> a : a >> NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
20 a = 0 ? NULL << a : a << NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
21 a = 0 ? NULL % a : a % NULL; // expected-warning 2{{use of NULL in arithmetic operation}} \
|
|
|
22 expected-warning {{remainder by zero is undefined}}
|
|
|
23 a = 0 ? NULL & a : a & NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
24 a = 0 ? NULL | a : a | NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
25 a = 0 ? NULL ^ a : a ^ NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
26
|
|
|
27 // Check for warnings or errors when doing arithmetic on pointers and other
|
|
|
28 // types.
|
|
|
29 v = 0 ? NULL + &a : &a + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
30 v = 0 ? NULL + c : c + NULL; // \
|
|
|
31 expected-error {{invalid operands to binary expression ('long' and 'void (^)()')}} \
|
|
|
32 expected-error {{invalid operands to binary expression ('void (^)()' and 'long')}}
|
|
|
33 v = 0 ? NULL + d : d + NULL; // \
|
|
|
34 expected-error {{invalid operands to binary expression ('long' and 'void (X::*)()')}} \
|
|
|
35 expected-error {{invalid operands to binary expression ('void (X::*)()' and 'long')}}
|
|
|
36 v = 0 ? NULL + e : e + NULL; // expected-error 2{{arithmetic on a pointer to the function type 'void ()'}}
|
|
|
37 v = 0 ? NULL + f : f + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
38 v = 0 ? NULL + "f" : "f" + NULL; // expected-warning 2{{use of NULL in arithmetic operation}}
|
|
|
39
|
|
|
40 // Using two NULLs should only give one error instead of two.
|
|
|
41 a = NULL + NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
42 a = NULL - NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
43 a = NULL / NULL; // expected-warning{{use of NULL in arithmetic operation}} \
|
|
|
44 // expected-warning{{division by zero is undefined}}
|
|
|
45 a = NULL * NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
46 a = NULL >> NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
47 a = NULL << NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
48 a = NULL % NULL; // expected-warning{{use of NULL in arithmetic operation}} \
|
|
|
49 // expected-warning{{remainder by zero is undefined}}
|
|
|
50 a = NULL & NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
51 a = NULL | NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
52 a = NULL ^ NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
53
|
|
|
54 a += NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
55 a -= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
56 a /= NULL; // expected-warning{{use of NULL in arithmetic operation}} \
|
|
|
57 // expected-warning{{division by zero is undefined}}
|
|
|
58 a *= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
59 a >>= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
60 a <<= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
61 a %= NULL; // expected-warning{{use of NULL in arithmetic operation}} \
|
|
|
62 // expected-warning{{remainder by zero is undefined}}
|
|
|
63 a &= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
64 a |= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
65 a ^= NULL; // expected-warning{{use of NULL in arithmetic operation}}
|
|
|
66
|
|
|
67 b = a < NULL || a > NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}
|
|
|
68 b = NULL < a || NULL > a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}
|
|
|
69 b = a <= NULL || a >= NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}
|
|
|
70 b = NULL <= a || NULL >= a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}
|
|
|
71 b = a == NULL || a != NULL; // expected-warning 2{{comparison between NULL and non-pointer ('int' and NULL)}}
|
|
|
72 b = NULL == a || NULL != a; // expected-warning 2{{comparison between NULL and non-pointer (NULL and 'int')}}
|
|
|
73
|
|
|
74 b = &a < NULL || NULL < &a || &a > NULL || NULL > &a; // expected-error 4{{ordered comparison between pointer and zero}}
|
|
|
75 b = &a <= NULL || NULL <= &a || &a >= NULL || NULL >= &a; // expected-error 4{{ordered comparison between pointer and zero}}
|
|
|
76 b = &a == NULL || NULL == &a || &a != NULL || NULL != &a;
|
|
|
77
|
|
|
78 b = 0 == a;
|
|
|
79 b = 0 == &a;
|
|
|
80
|
|
|
81 b = NULL < NULL || NULL > NULL;
|
|
|
82 b = NULL <= NULL || NULL >= NULL;
|
|
|
83 b = NULL == NULL || NULL != NULL;
|
|
|
84
|
|
|
85 b = ((NULL)) != a; // expected-warning{{comparison between NULL and non-pointer (NULL and 'int')}}
|
|
|
86
|
|
|
87 // Check that even non-standard pointers don't warn.
|
|
|
88 b = c == NULL || NULL == c || c != NULL || NULL != c;
|
|
|
89 b = d == NULL || NULL == d || d != NULL || NULL != d;
|
|
|
90 b = e == NULL || NULL == e || e != NULL || NULL != e;
|
|
|
91 b = f == NULL || NULL == f || f != NULL || NULL != f;
|
|
|
92 b = "f" == NULL || NULL == "f" || "f" != NULL || NULL != "f";
|
|
|
93
|
|
|
94 return NULL; // expected-error{{void function 'f' should not return a value}}
|
|
|
95 }
|
