On Sun, Jan 01, 2012, Ed Schouten wrote: > David, > > * David Schultz <d...@freebsd.org>, 20120101 03:54: > > I'm out of town and don't remember the details of this, but is there a > > reason we couldn't simply have an appropriate #ifdef that uses > > __attribute((__noreturn__)) instead of [[noreturn]]? We have plenty > > of ifdefs in the tree already to work around deficiencies in various > > compilers. Saying "it's the compiler's fault and we're not going to > > work around it" is a significant departure from historical precedent, > > and it punishes the wrong people. Easier than arguing with the GNU > > folks about fixing it, too... > > Right now GCC 4.7 is still an unreleased piece of software. If GCC 4.7 > was a released piece of software, I would of course agree that we should > add the workaround. > > The problem isn't that GCC 4.7 doesn't support [[noreturn]]. The problem > is that GCC only implements parts of C++11, yet it forces the compiler > into C++11 mode while bootstrapping. Even if we add a workaround for > this in sys/cdefs.h, we can likely never ever get rid of it. Because if > someone wants to install GCC 4.7 on a FreeBSD 14.0 box in 2020 to build > an old piece of software, he still needs the workaround. > > But there's nothing serious going on here. The issue is already > discussed in GCC Bugzilla and there is a patch that fixes the build. > Let's just wait to see what happens.
Since we're talking about a development version of gcc, I agree. We should wait and see if they fix it. It wouldn't surprise me if we wind up needing some workarounds. After all, after well over a decade, we still have workarounds for gcc's (and clang's) lack of complete C99 support. I doubt the gcc developers are going to agree that they need to dot every "i" and cross every "t" before they declare C++11 support and define __cplusplus to be 201103. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
