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</o:shapelayout></xml><![endif]--></head><body lang=NL link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Presently I'm looking at bug fdo 37341, which reports calc to hang when Goal Seek (sc/source/core/tool/interpr2.cxx, ScInterpreter::ScBackSolver()) is used.<o:p></o:p></p><p class=MsoNormal>The cause of the problem is not that too many iterations are needed, but that MAXRECURSION in sc/source/core/data/formulacell.cxx, ScFormulaCell::Interpret() is reached.<o:p></o:p></p><p class=MsoNormal>Increasing MAXRECURSION 'solves' the problem.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think increasing MAXRECURSION from its present value (400) to 800 is no problem. 10 years ago its value was 500 and in the past 1 years the available memory has been more than doubled.<o:p></o:p></p><p class=MsoNormal>But that does not really solve the problem, it only shifts the point where the problem will show.<o:p></o:p></p><p class=MsoNormal>Shouldn't a global error (or at least warning) be generated when MAXRECURSION is reached? After all, the result of ScFormulaCell::Interpret() is not correct in that case.<o:p></o:p></p><p class=MsoNormal>Unfortunately, I can't quite grasp the recursion/interation process in ScFormulaCell::Interpret(), so I can't generate the appropiate error.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Do you have any suggestions about how to properly solve this?<o:p></o:p></p><p class=MsoNormal>To me just increasing MAXRECURSION to 800 is a dirty hack.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:NL'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:NL'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";mso-fareast-language:NL'>Winfried<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>