I wrote:
>> the idea that we might get many dozen such warnings on more-current
>> compilers is scarier, as that might well interfere with people's
>> ability to do development on, say, Windows. Could somebody check
>> whether MSVC for instance complains about format strings using "z"?
>> Or shall I just commit this and we'll see what the buildfarm says?
> Given the lack of response, I've pushed the patch, and will canvass
> the buildfarm results later.
Just to follow up on that, I couldn't find any related warnings in the
buildfarm this morning (although there is one laggard machine, "anole",
which uses an unusual compiler and still hasn't reported in).
regards, tom lane