I feel like this is the type of change where there's not much
discussion to be had. And the only way to resolve it is to use some
voting to gauge community opinion.
So my suggestion is for people to respond with -1, -0.5, +-0, +0.5, or
+1 to indicate support against/for the change.
I'll start: +1
Attached is a patch that removes -Wdeclaration-after-statement in the
codebase. This is mainly to be able to add it to the commitfest, to
hopefully get a decent amount of responses.