On Wed, 2012-07-25 at 10:40 -0400, Josh Boyer wrote: > Recently, glibc made a change to suppress sign-conversion warnings in FD_SET > (glibc commit ceb9e56b3d1). This uncovered an issue with the kernel's > definition of __NFDBITS if applications #include <linux/types.h> after > including <sys/select.h>. A build failure would be seen when passing the > -Werror=sign-compare and -D_FORTIFY_SOURCE=2 flags to gcc. > > It was suggested that the kernel should either match the glibc definition of > __NFDBITS or remove that entirely. The current in-kernel uses of __NFDBITS > can be replaced with BITS_PER_LONG, and there are no uses of the related > __FDELT and __FDMASK defines. Given that, we'll continue the cleanup that > was started with commit 8b3d1cda4f5f ("posix_types: Remove fd_set macros") > and drop the remaining unused macros. > > Additionally, linux/time.h has similar macros defined that expand to nothing > so we'll remove those at the same time. > > Reported-by: Jeff Law <l...@redhat.com> > Suggested-by: Linus Torvalds <torva...@linux-foundation.org> > CC: <sta...@vger.kernel.org>
# v3.4+ (as 8b3d1cda4f5f went into 3.4) > Signed-off-by: Josh Boyer <jwbo...@redhat.com> [...] -- Ben Hutchings Humans are not rational beings; they are rationalising beings.
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