cert-mem57-cpp.cpp
1.08 KB
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
// RUN: %check_clang_tidy %s -std=c++14 cert-mem57-cpp %t
namespace std {
typedef __typeof(sizeof(int)) size_t;
void *aligned_alloc(size_t, size_t);
void free(void *);
} // namespace std
struct alignas(128) Vector1 {
char elems[128];
};
struct Vector2 {
char elems[128];
};
struct alignas(128) Vector3 {
char elems[128];
static void *operator new(std::size_t nbytes) noexcept(true) {
return std::aligned_alloc(alignof(Vector3), nbytes);
}
static void operator delete(void *p) {
std::free(p);
}
};
struct alignas(8) Vector4 {
char elems[32];
};
void f() {
auto *V1 = new Vector1;
// CHECK-MESSAGES: :[[@LINE-1]]:14: warning: allocation function returns a pointer with alignment {{[0-9]+}} but the over-aligned type being allocated requires alignment 128 [cert-mem57-cpp]
auto *V2 = new Vector2;
auto *V3 = new Vector3;
auto *V4 = new Vector4;
auto *V1_Arr = new Vector1[2];
// CHECK-MESSAGES: :[[@LINE-1]]:18: warning: allocation function returns a pointer with alignment {{[0-9]+}} but the over-aligned type being allocated requires alignment 128 [cert-mem57-cpp]
}