Hans Petter Selasky <h...@selasky.org> writes: > On 02/17/18 01:42, Jan Beich wrote: > >> Hans Petter Selasky <hsela...@freebsd.org> writes: >> >>> Author: hselasky >>> Date: Fri Feb 16 15:20:21 2018 >>> New Revision: 329371 >>> URL: https://svnweb.freebsd.org/changeset/base/329371 >>> >>> Log: >>> Allow the cmpxchg() macro in the LinuxKPI to work on pointers without >>> generating compiler warnings, -Wint-conversion . >> [...] >> >> To generate errors instead ? >> >> $ make clean all -C /usr/ports/graphics/drm-next-kmod >> [...] >> drm_lock.c:72:10: error: flexible array member 'u8' in a union is not allowed >> prev = cmpxchg(lock, old, new); >> ^ > > I believe this is a regression issue in GCC: > > https://gcc.gnu.org/ml/gcc-patches/2016-07/msg01505.html
If you didn't notice that bug is for C++, not C. GCC and Clang accept flexible array members in unions only in C++. cmpxchg() from linuxkpi doesn't seem to be used anywhere in the tree. If the macro didn't expand there's nothing to produce an error for. Anyway, I confirm r329447 fixed graphics/drm-next-kmod build. _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
