Is this completely unrealistic or is it carved in stone PostgreSQL will always be a C project forever and ever?
From my very limited understanding, PostgreSQL is more likely to be converted to C++!
ISTM that currently pg is written C89. Personnaly I think that C99 (standard from 18 years ago...) would be a progress, but this has been rejected in the past because of portability issues on some platforms (eg MS Visual C++ started to support part of C99 in ... 2013).
MSVC was really the main issue. MS really insisted that C++ was the future and C99 was a pointless diversion.
I kinda agree with them TBH, albeit with a preference for a small-ish and carefully used subset of C++. But they've recognised that it matters to enough people to add support now anyways. I suspect their increased interest in open source and Linux is related.
