File: cert-mem57-cpp.cpp

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (39 lines) | stat: -rw-r--r-- 1,110 bytes parent folder | download | duplicates (21)
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]
}