On Sun, Aug 22, 2021 at 09:19:42AM -0400, Tom Lane wrote: > > Uh, no, it's exactly *not* clear. There are a lot of GUCs that are only > of interest to particular subsystems. I do not see why being a GUC makes > something automatically more interesting than any other global variable. > Usually, the fact that one is global is only so the GUC machinery itself > can get at it, otherwise it'd be static in the owning module. > > As for "extensions should be able to get at the values", the GUC machinery > already provides uniform mechanisms for doing that safely. Direct access > to the variable's internal value would be unsafe in many cases.
Then shouldn't we try to prevent direct access on all platforms rather than only one?
