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