On Tue, Dec 05 2017, Jan Stary <h...@stare.cz> wrote: > All annotated occurences of "errno" in intro(2) are .Va, > except this one which is .Dv - is that intended? > > The others talk about the "varible" errno, this one is > an "identifier which expands to an addressable location", > whatever that means.
FWIW, I think it makes sense to speak about errno as a variable (.Va), but to describe that it is actually a preprocessor #define (.Dv) under the hood. > Jan > > > Index: intro.2 > =================================================================== > RCS file: /cvs/src/lib/libc/sys/intro.2,v > retrieving revision 1.65 > diff -u -p -r1.65 intro.2 > --- intro.2 5 Sep 2017 03:06:26 -0000 1.65 > +++ intro.2 5 Dec 2017 22:01:26 -0000 > @@ -51,7 +51,7 @@ Programs may be restricted to a subset o > .\"<more later...> > .Sh DIAGNOSTICS > Nearly all of the system calls provide an error number via the identifier > -.Dv errno , > +.Va errno , > which expands to an addressable location of type > .Vt int . > The address of > -- jca | PGP : 0x1524E7EE / 5135 92C1 AD36 5293 2BDF DDCC 0DFA 74AE 1524 E7EE
