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struct alignment/pragma pack() question

charles saperstein
Expert 1445 points

I have a structure that I think should be sizeof(mystruct) = 9 but sizeof(mystruct) is returning 10. the struct has a unsigned short, a float, and 6 unsigned char.

I thought it might be a packing issue. When I use #pragma pack(), I get a warning about unknown pragma.

I am using code composer studio 6 and a F28069.

  • 0
    TI__Guru**** 244930 points

    The C2000 compiler does not support packing structures, with #pragma pack or any other method.  The float must be on an even word boundary.  So that is why there is a  one word gap between the unsigned short and the float.

    Thanks and regards,

    -George