Pastel compiler code had variable changed and renamed GCC.
Ok. Still there are a lot of other contributors:
https://gcc.gnu.org/onlinedocs/gcc/Contributors.html
doesn't look like any of Stallman's renamed Pastel variables exist in the modern GCC. Still a good point to show the Stallman's true nature, would be getting the earliest GCC and comparing its architecture to Pastel, then to the modern GCC, to if the Stallman contributions had any value.