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[Help-glpk] GMPL fails on circular references

From: Meketon, Marc
Subject: [Help-glpk] GMPL fails on circular references
Date: Fri, 20 Jun 2008 13:50:47 -0400

I had a line of math-prog code that had a circular reference:


    param FromNode{ (train,sd,seq) in TRAIN_SEGS } symbolic := Terminal[FromNode[train,sd,seq]];



GMPL, much further down in the model, just stops without any warning or anything else.  It took a while to figure out the circular reference and fix my error.  If possible, it would be nice if GMPL could discover this and issue a message.



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