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// RUN: %clang_cc1 %s -verify -fsyntax-only -triple x86_64-pc-linux-gnu
typedef unsigned long long uint64_t;
typedef unsigned int uint32_t;
// Check integer sizes.
int array64[sizeof(uint64_t) == 8 ? 1 : -1];
int array32[sizeof(uint32_t) == 4 ? 1 : -1];
int arrayint[sizeof(int) < sizeof(uint64_t) ? 1 : -1];
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@+2 {{overflow in expression; result is 536870912 with type 'int'}}
uint64_t *b;
uint64_t b2 = b[4608 * 1024 * 1024] + 1;
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
(void)((i ? (4608 * 1024 * 1024) : (4608 * 1024 * 1024)) + 1);
// expected-warning@+1 2{{overflow in expression; result is 536870912 with type 'int'}}
return ((4608 * 1024 * 1024) + ((uint64_t)(4608 * 1024 * 1024)));
}
void check_integer_overflows_in_function_calls() {
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
(void)f0(4608 * 1024 * 1024);
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
uint64_t x = f0(4608 * 1024 * 1024);
// expected-warning@+2 {{overflow in expression; result is 536870912 with type 'int'}}
uint64_t (*f0_ptr)(uint64_t) = &f0;
(void)(*f0_ptr)(4608 * 1024 * 1024);
// expected-warning@+1 {{overflow in expression; result is 536870912 with type 'int'}}
(void)f2(0, f0(4608 * 1024 * 1024));
}
void check_integer_overflows_in_array_size() {
int arr[4608 * 1024 * 1024]; // expected-warning {{overflow in expression; result is 536870912 with type 'int'}}
}
struct s {
unsigned x;
unsigned y;
} s = {
.y = 5,
.x = 4 * 1024 * 1024 * 1024 // expected-warning {{overflow in expression; result is 0 with type 'int'}}
};
struct s2 {
unsigned a0;
struct s3 {
unsigned a2;
struct s4 {
unsigned a4;
} a3;
} a1;
} s2 = {
.a0 = 4 * 1024 * 1024 * 1024, // expected-warning {{overflow in expression; result is 0 with type 'int'}}
{
.a2 = 4 * 1024 * 1024 * 1024, // expected-warning {{overflow in expression; result is 0 with type 'int'}}
{
.a4 = 4 * 1024 * 1024 * 1024 // expected-warning {{overflow in expression; result is 0 with type 'int'}}
}
}
};
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