1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// RUN: %clang_cc1 %s -verify -fsyntax-only
typedef unsigned long long uint64_t;
typedef unsigned long long uint32_t;
uint64_t f0(uint64_t);
uint64_t f1(uint64_t, uint32_t);
uint64_t f2(uint64_t, ...);
static const uint64_t overflow = 1 * 4608 * 1024 * 1024; // expected-warning {{overflow in expression; result is 536870912 with type 'int'}}
uint64_t check_integer_overflows(int i) {
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
uint64_t overflow = 4608 * 1024 * 1024,
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow2 = (uint64_t)(4608 * 1024 * 1024),
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow3 = (uint64_t)(4608 * 1024 * 1024 * i),
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow4 = (1ULL * ((4608) * ((1024) * (1024))) + 2ULL),
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
multi_overflow = (uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow += overflow2 = overflow3 = (uint64_t)(4608 * 1024 * 1024);
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow += overflow2 = overflow3 = 4608 * 1024 * 1024;
uint64_t not_overflow = 4608 * 1024 * 1024ULL;
uint64_t not_overflow2 = (1ULL * ((uint64_t)(4608) * (1024 * 1024)) + 2ULL);
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
overflow = 4608 * 1024 * 1024 ? 4608 * 1024 * 1024 : 0;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
overflow = 0 ? 0 : 4608 * 1024 * 1024;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
if (4608 * 1024 * 1024)
return 0;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
if ((uint64_t)(4608 * 1024 * 1024))
return 1;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
if ((uint64_t)(4608 * 1024 * 1024))
return 2;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
if ((uint64_t)(4608 * 1024 * 1024 * i))
return 3;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
if ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL))
return 4;
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
if ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)))
return 5;
switch (i) {
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
case 4608 * 1024 * 1024:
return 6;
// expected-warning@+1 {{overflow in expression; result is 537919488 with type 'int'}}
case (uint64_t)(4609 * 1024 * 1024):
return 7;
// expected-error@+1 {{expression is not an integer constant expression}}
case ((uint64_t)(4608 * 1024 * 1024 * i)):
return 8;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
case ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL)):
return 9;
// expected-warning@+2 2{{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+1 {{overflow converting case value to switch condition type (288230376151711744 to 0)}}
case ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024))):
return 10;
}
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
while (4608 * 1024 * 1024);
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
while ((uint64_t)(4608 * 1024 * 1024));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
while ((uint64_t)(4608 * 1024 * 1024));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
while ((uint64_t)(4608 * 1024 * 1024 * i));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
while ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL));
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
while ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
do { } while (4608 * 1024 * 1024);
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
do { } while ((uint64_t)(4608 * 1024 * 1024));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
do { } while ((uint64_t)(4608 * 1024 * 1024));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
do { } while ((uint64_t)(4608 * 1024 * 1024 * i));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
do { } while ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL));
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
do { } while ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
for (uint64_t i = 4608 * 1024 * 1024;
(uint64_t)(4608 * 1024 * 1024);
i += (uint64_t)(4608 * 1024 * 1024 * i));
// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+3 2{{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+3 2{{overflow in expression; result is 536870912 with type 'int'}}
for (uint64_t i = (1ULL * ((4608) * ((1024) * (1024))) + 2ULL);
((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
i = ((4608 * 1024 * 1024) + ((uint64_t)(4608 * 1024 * 1024))));
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
_Complex long long x = 4608 * 1024 * 1024;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
(__real__ x) = 4608 * 1024 * 1024;
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
(__imag__ x) = 4608 * 1024 * 1024;
// expected-warning@+4 {{overflow in expression; result is 536870912 with type 'int'}}
// expected-warning@+3 {{array index 536870912 is past the end of the array (which contains 10 elements)}}
// expected-note@+1 {{array 'a' declared here}}
uint64_t a[10];
a[4608 * 1024 * 1024] = 1i;
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
return ((4608 * 1024 * 1024) + ((uint64_t)(4608 * 1024 * 1024)));
}
|
