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Re: C11 threads ABI questions - enum values
- From: Roland McGrath <roland at hack dot frob dot com>
- To: Rich Felker <dalias at libc dot org>
- Cc: libc-alpha at sourceware dot org
- Date: Wed, 1 Oct 2014 14:30:22 -0700 (PDT)
- Subject: Re: C11 threads ABI questions - enum values
- Authentication-results: sourceware.org; auth=none
- References: <20140727203825 dot GA13146 at brightrain dot aerifal dot cx> <alpine dot LNX dot 2 dot 00 dot 1408181622440 dot 743 at monopod dot intra dot ispras dot ru> <20140818192714 dot GS12888 at brightrain dot aerifal dot cx> <20141001211308 dot 88F742C397E at topped-with-meat dot com> <20141001211606 dot GN23797 at brightrain dot aerifal dot cx>
> Thanks for the feedback. Since then we've got C11 threads support
> committed in musl, with the following definitions. Are these
> acceptable for glibc too? They're the same ones I proposed before.
No guarantees until we actually implement something in glibc. But they
seem fine to me. The possible exception is that for interfaces where the
only valid thing is to pass in of the specified enum values, there is
something to be said for none of those values being zero (or -1) so that
applications can't sloppily use literal 0 (or uninitialized statics or the
like) and have it work but be non-portable and nonconforming.