Originally posted by: JorisK

The following code produces a compile error (C++):

ILOUSERCUTCALLBACK3(ThreeCycleBruteForceCallback, unordered_map<Index3D, IloBoolVar, IndexHash3D, IndexEqual3D>, timeDepSeqVars, unordered_map<Index2D, IloNumVar, IndexHash2D, IndexEqual2D>, precedenceVars, vector<IloExpr>*, cuts){ ... }

The error: macro "ILOUSERCUTCALLBACK3" passed 13 arguments, but takes just 7

So apparently I cannot pass a map like this to the callback? Is there a workaround for this?

Originally posted by: JorisK

I found the issue. Apparently you need to typedef those maps:

typedef unordered_map<Index3D, IloBoolVar, IndexHash3D, IndexEqual3D> timeDepSeqVarsMapType;
typedef unordered_map<Index2D, IloNumVar, IndexHash2D, IndexEqual2D> precedenceVarsMapType;
ILOUSERCUTCALLBACK3(ThreeCycleBruteForceCallback, timeDepSeqVarsMapType, timeDepSeqVars, precedenceVarsMapType, precedenceVars, vector<IloExpr>*, cuts)

This compiles correctly.

This is the correct workaround.

You are facing a general problem with passing template arguments to macros. See for example the following discussions:

http://stackoverflow.com/questions/4496842/pass-method-with-template-arguments-to-a-macro

http://stackoverflow.com/questions/13842468/comma-in-c-c-macro

http://stackoverflow.com/questions/4295890/trouble-with-template-parameters-used-in-macros