| 1 | #include <new> |
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| 2 | |
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| 3 | struct new_tag_t |
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| 4 | { |
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| 5 | }; |
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| 6 | new_tag_t new_tag; |
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| 7 | |
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| 8 | struct Struct { |
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| 9 | int value; |
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| 10 | }; |
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| 11 | |
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| 12 | bool operator==(const Struct &a, const Struct &b) { |
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| 13 | return a.value == b.value; |
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| 14 | } |
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| 15 | |
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| 16 | typedef char buf_t[sizeof(Struct)]; |
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| 17 | buf_t global_new_buf, tagged_new_buf; |
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| 18 | |
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| 19 | // This overrides global operator new |
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| 20 | // This function and the following does not actually allocate memory. We are merely |
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| 21 | // trying to make sure it is getting called. |
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| 22 | void * |
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| 23 | operator new(std::size_t count) |
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| 24 | { |
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| 25 | return &global_new_buf; |
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| 26 | } |
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| 27 | |
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| 28 | // A custom allocator |
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| 29 | void * |
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| 30 | operator new(std::size_t count, const new_tag_t &) |
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| 31 | { |
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| 32 | return &tagged_new_buf; |
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| 33 | } |
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| 34 | |
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| 35 | int main() { |
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| 36 | Struct s1, s2, s3; |
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| 37 | s1.value = 3; |
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| 38 | s2.value = 5; |
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| 39 | s3.value = 3; |
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| 40 | return 0; // break here |
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| 41 | } |
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| 42 | |
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| 43 | |
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