Fix bz#960284: thin_dump and other persistent-data tools may perform IO to misaligned buffers (on 4K hard sectored evices)
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@ -41,7 +41,7 @@ namespace persistent_data {
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// guarantees.
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//
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// Alignment must be a power of two.
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template <uint32_t Size = DEFAULT_BUFFER_SIZE, uint32_t Alignment = 512>
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template <uint32_t Size = DEFAULT_BUFFER_SIZE, uint32_t Alignment = 4096>
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class buffer : private boost::noncopyable {
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public:
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BOOST_STATIC_ASSERT((Alignment > 1) & !(Alignment & (Alignment - 1)));
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