hmm github can't preview cpp files https://github.com/dotnet/coreclr/blob/master/src/gc/gc.cpp
I guess it's no surprise that microsoft software has a human-edited source file that's over 35000 lines...
IIRC, it was originally machine-generated... from LISP code written by David Bacon, under contract from the then-GC owner Patrick Dussud.
Because it's a gargantuan 1193.581 kb.