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Chalange: where is the bug?

Hi everybody,

in the below code there is bug. At least for the release 700 P22. The code is so short and simple, that, I believe, it can be interesting exercise for you to test your in-brain debuggers! So here you are with the challenge. There will be no prices, just a winner. I'm going to post a hint in a week.

FUNCTION CALCULATE_DATE.*"----------------------------------------------------------------------*"Lokale Schnittstelle:*"       IMPORTING*"             DAYS DEFAULT '0'*"             MONTHS DEFAULT '0'*"             START_DATE DEFAULT SY-DATUM*"       EXPORTING*"             RESULT_DATE*"----------------------------------------------------------------------  DATA: NO_MONTHS TYPE I,        NO_YEARS TYPE I,        DATE_D TYPE D.  DATE_D = START_DATE.  NO_MONTHS = DATE_D+4(2) + MONTHS.  NO_YEARS =  NO_MONTHS DIV 12.  NO_MONTHS = NO_MONTHS MOD 12.  NO_YEARS = DATE_D+0(4) + NO_YEARS.  IF NO_MONTHS = 0.    NO_YEARS  = NO_YEARS - 1.    NO_MONTHS = 12.  ENDIF.  DATE_D+0(4) = NO_YEARS.  UNPACK NO_MONTHS TO DATE_D+4(2).  DATE_D = DATE_D + DAYS.  RESULT_DATE = DATE_D.ENDFUNCTION.
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  • Best Answer
    Posted on Nov 29, 2013 at 09:54 AM

    As @Jürgen L notified me, there is already a correct answer on SCN :

    So I apologize for the double posting. A moderator can eventually remove the above post :-)

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  • Posted on Nov 29, 2013 at 09:40 AM

    The data defenition of DATE_D TYPE D is wrong.

    It should be as SY-DATUM only.

    Because, when the START_DATE is given as 29.11.2013, then, (which is 20131129)...

    then the DATE_D is stored as 29.11.20.

    This is the problem,

    So further calculations are wrong

    The output is not a valid date



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