1// RUN: %clang_cc1 -triple=x86_64-pc-linux-gnu -Wover-aligned -verify %s
2
3namespace test1 {
4struct Test {
5  template <typename T>
6  struct SeparateCacheLines {
7    T data;
8  } __attribute__((aligned(256)));
9
10  SeparateCacheLines<int> high_contention_data[10];
11};
12
13void helper() {
14  Test t;
15  new Test;  // expected-warning {{type 'test1::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
16  new Test[10];  // expected-warning {{type 'test1::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
17}
18}
19
20namespace test2 {
21class Test {
22  typedef int __attribute__((aligned(256))) aligned_int;
23  aligned_int high_contention_data[10];
24};
25
26void helper() {
27  Test t;
28  new Test;  // expected-warning {{type 'test2::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
29  new Test[10];  // expected-warning {{type 'test2::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
30}
31}
32
33namespace test3 {
34struct Test {
35  template <typename T>
36  struct SeparateCacheLines {
37    T data;
38  } __attribute__((aligned(256)));
39
40  void* operator new(unsigned long) {
41    return 0; // expected-warning {{'operator new' should not return a null pointer unless it is declared 'throw()'}}
42  }
43
44  SeparateCacheLines<int> high_contention_data[10];
45};
46
47void helper() {
48  Test t;
49  new Test;
50  new Test[10];  // expected-warning {{type 'test3::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
51}
52}
53
54namespace test4 {
55struct Test {
56  template <typename T>
57  struct SeparateCacheLines {
58    T data;
59  } __attribute__((aligned(256)));
60
61  void* operator new[](unsigned long) {
62    return 0; // expected-warning {{'operator new[]' should not return a null pointer unless it is declared 'throw()'}}
63  }
64
65  SeparateCacheLines<int> high_contention_data[10];
66};
67
68void helper() {
69  Test t;
70  new Test;  // expected-warning {{type 'test4::Test' requires 256 bytes of alignment and the default allocator only guarantees}}
71  new Test[10];
72}
73}
74