Re: [PATCH 04/13] Kbuild: Rust support

[Al Viro]

On Sat, Apr 17, 2021 at 12:04:16AM +0200, Willy Tarreau wrote:

> Yep but I kept it just to have comparable output code since in C
> you'd simply use "goto leave" and not have this function call to
> do the cleanup.

... or use any number of other technics; the real question was how
much of cleanups would be skipped by that syntax sugar.

IME anything that interacts with flow control should be as explicit
and unambiguous as possible.  _Especially_ concerning how large
a scope are we leaving.

There's a bunch of disciplines that make use of that kind of tools
and do it more or less safely, but they need to be well-specified
and very well understood.  And some tools (C++-style exceptions,
for example) simply need to be taken out and shot, but that's
a separate story^Wflamewar...