forked from OSchip/llvm-project
24 lines
1.1 KiB
C++
24 lines
1.1 KiB
C++
|
// RUN: %check_clang_tidy %s cppcoreguidelines-narrowing-conversions %t \
|
||
|
|
// RUN: -- -- -target x86_64-unknown-linux -m32
|
||
|
|
|
||
|
|
static_assert(sizeof(int) * 8 == 32, "int is 32-bits");
|
||
|
|
static_assert(sizeof(long) * 8 == 32, "long is 32-bits");
|
||
|
|
static_assert(sizeof(long long) * 8 == 64, "long long is 64-bits");
|
||
|
|
|
||
|
|
void narrow_integer_to_signed_integer_is_not_ok() {
|
||
|
|
int i; // i.e. int32_t
|
||
|
|
long l; // i.e. int32_t
|
||
|
|
long long ll; // i.e. int64_t
|
||
|
|
|
||
|
|
unsigned int ui; // i.e. uint32_t
|
||
|
|
unsigned long ul; // i.e. uint32_t
|
||
|
|
unsigned long long ull; // i.e. uint64_t
|
||
|
|
|
||
|
|
i = l; // int and long are the same type.
|
||
|
|
i = ll; // int64_t does not fit in an int32_t
|
||
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: narrowing conversion from 'long long' to signed type 'int' is implementation-defined [cppcoreguidelines-narrowing-conversions]
|
||
|
|
ll = ul; // uint32_t fits into int64_t
|
||
|
|
ll = ull; // uint64_t does not fit in an int64_t
|
||
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:8: warning: narrowing conversion from 'unsigned long long' to signed type 'long long' is implementation-defined [cppcoreguidelines-narrowing-conversions]
|
||
|
|
}
|