forked from OSchip/llvm-project
104 lines
2.2 KiB
C++
104 lines
2.2 KiB
C++
// RUN: %check_clang_tidy %s misc-sizeof-container %t -- -- -std=c++11 -target x86_64-unknown-unknown
|
|
|
|
namespace std {
|
|
|
|
typedef unsigned int size_t;
|
|
|
|
template <typename T>
|
|
struct basic_string {
|
|
size_t size() const;
|
|
};
|
|
|
|
template <typename T>
|
|
basic_string<T> operator+(const basic_string<T> &, const T *);
|
|
|
|
typedef basic_string<char> string;
|
|
|
|
template <typename T>
|
|
struct vector {
|
|
size_t size() const;
|
|
};
|
|
|
|
// std::bitset<> is not a container. sizeof() is reasonable for it.
|
|
template <size_t N>
|
|
struct bitset {
|
|
size_t size() const;
|
|
};
|
|
|
|
// std::array<> is, well, an array. sizeof() is reasonable for it.
|
|
template <typename T, size_t N>
|
|
struct array {
|
|
size_t size() const;
|
|
};
|
|
|
|
class fake_container1 {
|
|
size_t size() const; // non-public
|
|
};
|
|
|
|
struct fake_container2 {
|
|
size_t size(); // non-const
|
|
};
|
|
|
|
}
|
|
|
|
using std::size_t;
|
|
|
|
#define ARRAYSIZE(a) \
|
|
((sizeof(a) / sizeof(*(a))) / static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
|
|
|
|
#define ARRAYSIZE2(a) \
|
|
(((sizeof(a)) / (sizeof(*(a)))) / static_cast<size_t>(!((sizeof(a)) % (sizeof(*(a))))))
|
|
|
|
struct string {
|
|
std::size_t size() const;
|
|
};
|
|
|
|
template<typename T>
|
|
void g(T t) {
|
|
(void)sizeof(t);
|
|
}
|
|
|
|
void f() {
|
|
string s1;
|
|
std::string s2;
|
|
std::vector<int> v;
|
|
|
|
int a = 42 + sizeof(s1);
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:16: warning: sizeof() doesn't return the size of the container; did you mean .size()? [misc-sizeof-container]
|
|
a = 123 * sizeof(s2);
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:13: warning: sizeof() doesn't return the size
|
|
a = 45 + sizeof(s2 + "asdf");
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:12: warning: sizeof() doesn't return the size
|
|
a = sizeof(v);
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: sizeof() doesn't return the size
|
|
a = sizeof(std::vector<int>{});
|
|
// CHECK-MESSAGES: :[[@LINE-1]]:7: warning: sizeof() doesn't return the size
|
|
|
|
a = sizeof(a);
|
|
a = sizeof(int);
|
|
a = sizeof(std::string);
|
|
a = sizeof(std::vector<int>);
|
|
|
|
g(s1);
|
|
g(s2);
|
|
g(v);
|
|
|
|
std::fake_container1 fake1;
|
|
std::fake_container2 fake2;
|
|
std::bitset<7> std_bitset;
|
|
std::array<int, 3> std_array;
|
|
|
|
a = sizeof(fake1);
|
|
a = sizeof(fake2);
|
|
a = sizeof(std_bitset);
|
|
a = sizeof(std_array);
|
|
|
|
|
|
std::string arr[3];
|
|
a = ARRAYSIZE(arr);
|
|
a = ARRAYSIZE2(arr);
|
|
a = sizeof(arr) / sizeof(arr[0]);
|
|
|
|
(void)a;
|
|
}
|