On Fri, Feb 09, 2018 at 02:44:05 +0000, Christos Zoulas wrote: > In article <20180208234417.ga23...@britannica.bec.de>, > Joerg Sonnenberger <jo...@bec.de> wrote: > >On Thu, Feb 08, 2018 at 10:56:22PM +0000, Christos Zoulas wrote: > >> In article <20180207130259.ga21...@britannica.bec.de>, > >> Joerg Sonnenberger <jo...@bec.de> wrote: > >> >On Tue, Feb 06, 2018 at 03:21:21PM -0500, Christos Zoulas wrote: > >> >> Module Name: src > >> >> Committed By: christos > >> >> Date: Tue Feb 6 20:21:21 UTC 2018 > >> >> > >> >> Modified Files: > >> >> src/include: unistd.h > >> >> > >> >> Log Message: > >> >> detect duplicate declaration of pthread_atfork() in pthread.h > >> > > >> >Is this for some new broken GCC warning? > >> > > >> > >> This is what the compiler said, and we have prior art for this (macro > >> protect to avoid dup declarations -- grep for _DECLARED). > > > >Normally only for typedefs, since pre-C11 (?) it was invalid to typedef > >the same thing twice. That's not true for prototypes though. > > We have been doing this for functions for a while; check unistd.h
But *why* have we been doing that? -uwe