Anonymous - 2012-07-02

I'm using it++ in minGW + eclipse environment.

When I tried to use concat() function for bvec variable, it shows warning(?)
saying ambiguous as captured photo below:

I said warning because it show error on the left side and there is 'x' sign in
the file tree, but the compiler doesn't show any error message and succeed to
compile and run.

So, I'm not sure whether it's error message or how to suppress this warning if
it is not error.