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C/C++ code
typedef struct _VSCSIDISK_COMMON_DEVICE_EXTENSION
{
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} VSCSIDISK_COMMON_DEVICE_EXTENSION, *PVSCSIDISK_COMMON_DEVICE_EXTENSION;

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about pack and align for C/C++

http://msdn.microsoft.com/en-us/library/2e70t5y1(VS.80).aspx
#pragma
pack(  n  )
n : Valid values are 1, 2, 4, 8, and 16.the
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