I haven't looked at the project. In my experience, 100K lines of C source code roughly corresponds to 1MB of native code. That might not be representative, though. But maybe it's just that that the rest of this project has some more of these "20-100% expansion will be ok" decisions.
I just took these sizes from the master branch when I wrote the above comment. While that may have been true at one point, or is for C code, I suspect that is no longer the case in general. Between data files, resources, modern compilers optimising for speed over size, and more, I'd expect this to be significantly higher now.
