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 christos
