from the compiler word aligning things? non-word-aligned handle?

Wed, 07 Jan 2004 09:48:19 -0800

Hi all,

In ToDoDB.h, when defining a structure, the author sometimes add "reserved"
member with comment "from the compiler word aligning things". Why?

typedef struct {
        DateType        dueDate;
        UInt8   priority;               // high bit is complete flag
        UInt8   reserved;                   // from the compiler word aligning things
        Char *  description;
        Char *  note;
} ToDoItemType;

Is it necessary to make the size of any structure to be multiple of word
size, such as 16, 32, 48, 64 bits?

Is this related to a "fatal error: non-word-aligned handle".

Regards,
John

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