| 1 | // RUN: %check_clang_tidy %s bugprone-suspicious-memory-comparison %t \ |
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| 2 | // RUN: -- -- -target i386-unknown-unknown |
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| 3 | |
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| 4 | static_assert(sizeof(int *) == sizeof(int)); |
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| 5 | |
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| 6 | namespace std { |
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| 7 | typedef __SIZE_TYPE__ size_t; |
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| 8 | int memcmp(const void *lhs, const void *rhs, size_t count); |
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| 9 | } // namespace std |
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| 10 | |
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| 11 | namespace no_padding_on_32bit { |
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| 12 | struct S { |
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| 13 | int x; |
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| 14 | int *y; |
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| 15 | }; |
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| 16 | |
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| 17 | void test() { |
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| 18 | S a, b; |
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| 19 | std::memcmp(lhs: &a, rhs: &b, count: sizeof(S)); |
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| 20 | } |
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| 21 | } // namespace no_padding_on_32bit |
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| 22 | |
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| 23 | namespace inner_padding { |
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| 24 | struct S { |
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| 25 | char x; |
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| 26 | int y; |
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| 27 | }; |
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| 28 | void test() { |
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| 29 | S a, b; |
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| 30 | std::memcmp(lhs: &a, rhs: &b, count: sizeof(S)); |
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| 31 | // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: comparing object representation of type 'S' which does not have a unique object representation; consider comparing the members of the object manually |
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| 32 | } |
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| 33 | } // namespace inner_padding |
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| 34 | |
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