compiler standards (and/or min gcc version) supported with installed headers ?

[Mike Frysinger]

On Saturday 29 December 2012 04:01:58 Andreas Schwab wrote:
> Mike Frysinger <vapier@gentoo.org> writes:
> > bits/libc-lock.h defines __libc_cleanup_region_start which uses PTFAVAIL
> > & __libc_ptf_call_always which isn't defined anywhere.  the header also
> > uses LLL_LOCK_INITIALIZER which isn't setup.  nptl's internal
> > libc-lockP.h appears to have most of that stuff.
> 
> bits/libc-lock.h shoudn't really be an installed header.

i don't have an opinion either way.  imo, if it is installed, it should be 
usable.

<gcc-4 versions depend on it in libio.  which is how i noticed problems with 
it in the first place.
-mike
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