On Mo, 2014-12-08 at 15:38 +0100, Jörg Krause wrote:
> On Mo, 2014-12-08 at 14:22 +0100, Max Kellermann wrote:
> > On 2014/12/07 22:40, Jörg Krause <jkra...@posteo.de> wrote:
> > > This patch fix a build error with the musl C library. The patch is 
> > > originally
> > > taken from Alpine Linux:
> > > http://git.alpinelinux.org/cgit/aports/tree/main/mpd/fix-musl.patch.
> > > 
> > > musl declares pthread_equal both as a macro and as a function. Without the
> > > parentheses the preprocessor expands pthread_equal to ::((id)==(other.id))
> > > which obviously fails.
> > > 
> > > Using parentheses prevents the preprocessor from expansion and the 
> > > compiler
> > > looks up for the function declaration of pthread_equal in the global
> > > namespace.
> > 
> > I found it simpler to just drop the "::".  It is sad that musl uses
> > macros to implement the standard C API, though.
> 
> Many thanks for the commits. I was really confused by the declaration of
> pthread_equal both as macro and as function. I will ask the musl
> maintainers about this.

FYI: This is the statement of a musl maintainer about this issue:
http://www.openwall.com/lists/musl/2014/12/08/15

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