What would be interesting is if they found a memory unsafe bug. Postgres is a perfect case study of 30 years of C with a bit of CPP; if rewriting in a safer language didn't find anything...
Is it cheaper to find them at compile time rather than runtime? Yes.
But it’s not an unsolved problem. Memory bugs are a known unknown.
They will ask relevant Claude skill.md
In fact from a porting effort this is the first blog post I would expect. Not that the hey we successfully did it.