This is the mail archive of the cygwin@sourceware.cygnus.com mailing list for the Cygwin project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]

Re: packed structures


Thanks to all that replied. This does work. The size is 9.

typedef struct HeaderTag {
    ULONG          HeaderLength;
    CHAR             PackingType;
    USHORT         NumRows;
    USHORT         PackedSize;
    } __attribute__ ((packed)) HeaderType, *pHeaderType;


   Tom Stokes

If anyone is interested, this is from manpages:
----------------------------------------------------------------------------
----------------------------------------
packed
The packed attribute specifies that a variable or structure field should
have the
smallest possible alignment--one byte for a variable, and one bit for a
field,
unless you specify a larger value with the aligned attribute.

Here is a structure in which the field x is packed, so that it
immediately follows a:

struct foo
{
  char a;
  int x[2] __attribute__ ((packed));
};



-
For help on using this list (especially unsubscribing), send a message to
"gnu-win32-request@cygnus.com" with one line of text: "help".


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]