Effect of a Lindlar catalyst on an alkene?

[rblake92]

I know a Lindlar catalyst will cause syn addition of hydrogens to an alkyne and then stop at an alkene, but what about a molecule that has both an alkyne and an alkene in it to start. Is the alkene taken to an alkane or is it simply not affected? Thanks for your answers.

 

[AGNuke]

Lindlar's catalyst is poisoned so that it do not reduce the double bonds furthur into single bond.