Problem with record structures

[anton]

Hi,

When creating a record structure and the total size of the record structure is not even, the PIC crashes when you try to access a variable in the record.

For example the following code works.

Code: Select all

type
  TELinkInfo    = record
    IPAddr      : String[17];
    SubMask     : String[17];
    Gateway     : String[17];
    HostIP1     : String[17];
    HostIP2     : String[17];
    ConInterval : word;
    CommTimeout : word;
    Version     : String[7];
  end;

type
  TComPortInfo  = record
    MeterMake   : word;
    BaudRate    : word;
    Parity      : word;
    TCPPort     : word;
    Connected   : word;
    SNumber     : String[17];
  end;

var
  ELinkInfo     : TELinkInfo;
  ComPortInfo   : array[0..3] of TComPortInfo;

begin
  ComPortInfo[1].TCPPort := 1234;
end;

But when I change one of the variables to for example SNumber to be uneven, the PIC would crash.

Code: Select all

type
  TComPortInfo  = record
    MeterMake   : word;
    BaudRate    : word;
    Parity      : word;
    TCPPort     : word;
    Connected   : word;
    SNumber     : String[16];
  end;

The same would happen when you change one of the words to a byte.

Thank you
Anton