1// RUN: %clang_cc1 %s -verify -fsyntax-only -std=gnu++98 -triple x86_64-pc-linux-gnu
2typedef unsigned long long uint64_t;
3typedef unsigned int uint32_t;
4
5// Check integer sizes.
6int array64[sizeof(uint64_t) == 8 ? 1 : -1];
7int array32[sizeof(uint32_t) == 4 ? 1 : -1];
8int arrayint[sizeof(int) < sizeof(uint64_t) ? 1 : -1];
9
10uint64_t f0(uint64_t);
11uint64_t f1(uint64_t, uint32_t);
12uint64_t f2(uint64_t, ...);
13
14static const uint64_t overflow = 1 * 4608 * 1024 * 1024; // expected-warning {{overflow in expression; result is 536870912 with type 'int'}}
15
16uint64_t check_integer_overflows(int i) { //expected-note {{declared here}}
17// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
18  uint64_t overflow = 4608 * 1024 * 1024,
19// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
20           overflow2 = (uint64_t)(4608 * 1024 * 1024),
21// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
22           overflow3 = (uint64_t)(4608 * 1024 * 1024 * i),
23// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
24           overflow4 =  (1ULL * ((4608) * ((1024) * (1024))) + 2ULL),
25// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
26           overflow5 = static_cast<uint64_t>(4608 * 1024 * 1024),
27// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
28           multi_overflow = (uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024));
29
30// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
31  overflow += overflow2 = overflow3 = (uint64_t)(4608 * 1024 * 1024);
32// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
33  overflow += overflow2 = overflow3 = 4608 * 1024 * 1024;
34
35// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
36  overflow += overflow2 = overflow3 = static_cast<uint64_t>(4608 * 1024 * 1024);
37
38  uint64_t not_overflow = 4608 * 1024 * 1024ULL;
39  uint64_t not_overflow2 = (1ULL * ((uint64_t)(4608) * (1024 * 1024)) + 2ULL);
40
41// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
42  overflow = 4608 * 1024 * 1024 ?  4608 * 1024 * 1024 : 0;
43
44// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
45  overflow =  0 ? 0 : 4608 * 1024 * 1024;
46
47// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
48  if (4608 * 1024 * 1024)
49    return 0;
50
51// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
52  if ((uint64_t)(4608 * 1024 * 1024))
53    return 1;
54
55// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
56  if (static_cast<uint64_t>(4608 * 1024 * 1024))
57    return 1;
58
59// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
60  if ((uint64_t)(4608 * 1024 * 1024))
61    return 2;
62
63// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
64  if ((uint64_t)(4608 * 1024 * 1024 * i))
65    return 3;
66
67// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
68  if ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL))
69    return 4;
70
71// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
72  if ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)))
73    return 5;
74
75  switch (i) {
76// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
77  case 4608 * 1024 * 1024:
78    return 6;
79// expected-warning@+1 {{overflow in expression; result is 537919488 with type 'int'}}
80  case (uint64_t)(4609 * 1024 * 1024):
81    return 7;
82// expected-warning@+1 {{overflow in expression; result is 537919488 with type 'int'}}
83  case 1 + static_cast<uint64_t>(4609 * 1024 * 1024):
84    return 7;
85// expected-error@+2 {{expression is not an integral constant expression}}
86// expected-note@+1 {{read of non-const variable 'i' is not allowed in a constant expression}}
87  case ((uint64_t)(4608 * 1024 * 1024 * i)):
88    return 8;
89// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
90  case ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL)):
91    return 9;
92// expected-warning@+2 2{{overflow in expression; result is 536870912 with type 'int'}}
93// expected-warning@+1 {{overflow converting case value to switch condition type (288230376151711744 to 0)}}
94  case ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024))):
95    return 10;
96  }
97
98// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
99  while (4608 * 1024 * 1024);
100
101// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
102  while ((uint64_t)(4608 * 1024 * 1024));
103
104// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
105  while (static_cast<uint64_t>(4608 * 1024 * 1024));
106
107// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
108  while ((uint64_t)(4608 * 1024 * 1024));
109
110// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
111  while ((uint64_t)(4608 * 1024 * 1024 * i));
112
113// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
114  while ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL));
115
116// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
117  while ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
118
119// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
120  do { } while (4608 * 1024 * 1024);
121
122// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
123  do { } while ((uint64_t)(4608 * 1024 * 1024));
124
125// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
126  do { } while (static_cast<uint64_t>(4608 * 1024 * 1024));
127
128// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
129  do { } while ((uint64_t)(4608 * 1024 * 1024));
130
131// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
132  do { } while ((uint64_t)(4608 * 1024 * 1024 * i));
133
134// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
135  do { } while ((1ULL * ((4608) * ((1024) * (1024))) + 2ULL));
136
137// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
138  do { } while ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
139
140// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
141// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
142// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
143  for (uint64_t i = 4608 * 1024 * 1024;
144       (uint64_t)(4608 * 1024 * 1024);
145       i += (uint64_t)(4608 * 1024 * 1024 * i));
146
147// expected-warning@+3 {{overflow in expression; result is 536870912 with type 'int'}}
148// expected-warning@+3 2{{overflow in expression; result is 536870912 with type 'int'}}
149// expected-warning@+3 2{{overflow in expression; result is 536870912 with type 'int'}}
150  for (uint64_t i = (1ULL * ((4608) * ((1024) * (1024))) + 2ULL);
151       ((uint64_t)((uint64_t)(4608 * 1024 * 1024) * (uint64_t)(4608 * 1024 * 1024)));
152       i = ((4608 * 1024 * 1024) + ((uint64_t)(4608 * 1024 * 1024))));
153
154// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
155  _Complex long long x = 4608 * 1024 * 1024;
156
157// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
158  (__real__ x) = 4608 * 1024 * 1024;
159
160// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
161  (__imag__ x) = 4608 * 1024 * 1024;
162
163// expected-warning@+4 {{overflow in expression; result is 536870912 with type 'int'}}
164// expected-warning@+3 {{array index 536870912 is past the end of the array (which contains 10 elements)}}
165// expected-note@+1 {{array 'a' declared here}}
166  uint64_t a[10];
167  a[4608 * 1024 * 1024] = 1i;
168
169// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
170  return ((4608 * 1024 * 1024) + ((uint64_t)(4608 * 1024 * 1024)));
171}
172