[phs2501]

I highly doubt (and some quick checks seem to verify that) any of the tiny CC implementations will support the cleanup extension that most of this post's magic hinges upon.

(Agree on your other points for what it's worth.)

[fuhsnn]

TinyCC supports cleanup[1], onramp[2] supports C2y defer (which is a superset), slimcc[3] supports both.

[1] https://godbolt.org/z/hvj9vcncG

[2] https://github.com/ludocode/onramp

[3] https://github.com/fuhsnn/slimcc