This thing has likely all of GCC, clang and any other open source C compiler in its training set.
It could have spotted out GCC source code verbatim and matched its performance.
It's kinda of a failure it didn't just spit out GCC isn't it?
If I had GCC and was asked for a C compiler I would just provide GCC..
That’s the equivalent of getting less than 50% on a quiz consisting entirely of yes/no questions.