strange location information of error given by ubsan.

I’m attempting to find undefined behavior in a software using ubsan, but
got a strange error information:

/home/software/llvm-3.6.2.src/projects/compiler-rt/lib/ubsan/ runtime error: value 3.33333e+21 is outside the range of representable values of type ‘int’

I’m confused by the location, should it point to a file in the testing software ?