The packed variable attribute (IBM extension)

The variable attribute packed allows you to override the default alignment mode, to reduce the alignment for all members of an aggregate, or selected members of an aggregate to the smallest possible alignment: one byte for a member and one bit for a bit field member.

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packed variable attribute syntax

>>-__attribute__--((--+-packed-----+--))-----------------------><
                      '-__packed__-'       
Parent topic: Variable attributes (IBM extension)
Related reference:
The __align type qualifier (IBM extension)
Aligning data
The __alignof__ operator (IBM extension)


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