FYI Virus detected in sample software

My X5 program detected a virus in the software example programs downloaded from this site last week.

The Unix executable file “cavity2d” had something called exploit --OSX/MetaData.B


it is quite clear that there is no virus in Palabos.

There are two possible explanations for this virus detection you see. The first is that the anti-virus detects a virus where there is no (a bug in the anti-virus so to say). The other possibility is that you have indeed a virus on your computer that is added to the executable when you compile the code.