[Dip] Problem with 0 integer variables

[Kipp Martin]

Hi:

I am experiencing a very strange phenomenon with the 
Dip/examples/SmallIP example in the current (revision 281) trunk version 
of the project. If, with Linux with gcc version 4.4.1, I remove the lines

m_modelPart1.integerVars.push_back(0);
m_modelPart1.integerVars.push_back(1);
m_modelPart2.integerVars.push_back(0);
m_modelPart2.integerVars.push_back(1);

everything work fine and I get the LP relaxation value of 2.25. However, 
if I do exactly the same thing with Mac OS X gcc version 4.2.1 I get the 
error

COIN Exception [ modelCore->integerVars.size() > 0 ] at 
../../../Dip/src/DecompBranch.cpp:L38 in

so for some reason on the Mac OS X Dip still thinks there are integer 
variables and calls DecompBranch. However, DecomBranch does not get 
called in Linux. I am totally at a loss as to why DecompBranch would get 
called on the Mac but not  Linux when there are no integer variables. 
Does anyone have a suggestion as to what I might look for?

Thanks


-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Booth School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kmartin at chicagobooth.edu
http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
http://projects.coin-or.org/OS