Ken Moffat wrote:
On Sun, Jul 27, 2014 at 11:45:46PM +1200, Christopher Gregory wrote:
Hello,
I have just had confirmation that a patch that I located to fix run-time
segfaults when mounting remote shares using nfs-utils-1.3.0 compiled
with gcc 4.9.x, works.
I have left the detailed instructions describing what the original bug
submitter had in it, as it describes the error in detail and the
responses from three red-hat developers.
If someone would like to add it to the nfs-utils page in TRUNK, I think
that it could help a number of others.
Regards,
Christopher.
At the moment, I disagree - it seems to be a workaround for
building with -Os. I don't have a problem with the patch being in
the patches repo - we have various other patches which aren't in the
book.
For me, the client part of nfs-utils-1.3.0 is working fine (nfs v3)
with gcc-4.9.0. I build with -O2 whenever a package respects my
CFLAGS, in this case the default flags are -g -O2.
Using -Os used to be a nice idea (back in the days when a desktop
machine might only have 512MB or RAM). For a while, Linus thought
that using -Os in the kernel would be a good idea (to reduce the
icache footprint), but too many problems showed up. So, I recommend
that people not use -Os in normal circumstances.
I generally recommend using whatever upstream uses as the default.
That's what they have tested the most. Size should not be an issue
today with the tiny price of RAM/Disk. Speed differences are
imperceptible at the speed of modern systems.
That said, stripping out debugging symbols is a reasonable thing to do,
but that can be done any time.
-- Bruce
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