Hi Rene,
I also have an RPi2 here so I've used that to test this round of fixes,
this bug should be fixed for good now as I've re-factored the problem code
to a more straightforward form.
I've also fixed the CMake policy warnings.
Thanks for the log that was a big help. I noticed in the log that the cmake
invocation is being passed:
-DGRAPHITE2_NTRACING:bool=1
Whilst it works I believe that is a typo, and it should be:
-DGRAPHITE2_NTRACING:BOOL=ON
Regards,
Tim
On Fri, Dec 18, 2015 at 3:29 AM, Rene Engelhard wrote:
> forwarded 805323 Tim Eves
> thanks
>
> Hi Tim,
>
> On Thu, Dec 17, 2015 at 11:37:20AM +0700, Tim Eves wrote:
> >The bug has been fixed in commit
> 594d92c0c0efbd3a87a32260f57e502200c351a7
> >"Fix misaligned access on ARM and HP PA processors during collision".
> >
> >It was a non-32 bit aligned 32bit read, some processors (ARM) are
> stricter
> >about this than others (Intel), which could explain the fact it built
> fine
> >on other BE archs.
>
> Unfortunately the patch doesn't work for me, I still get a build failure
> on armhf.
> (See attached buildlog). gdb'ing core gives
>
> (cowbuilder-unstable)rene@raspberrypi:~/tmp/graphite2-1.3.4/build/tests$
> gdb --core=core
> GNU gdb (Debian 7.10-1) 7.10
> Copyright (C) 2015 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law. Type "show copying"
> and "show warranty" for details.
> This GDB was configured as "arm-linux-gnueabihf".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>.
> Find the GDB manual and other documentation resources online at:
> <http://www.gnu.org/software/gdb/documentation/>.
> For help, type "help".
> Type "apropos word" to search for commands related to "word".
> [New LWP 14630]
> Core was generated by `/usr/bin/python
> /data/tmp/graphite2-1.3.4/tests/fnttxtrender --graphite_library'.
> Program terminated with signal SIGBUS, Bus error.
> #0 0x768e8314 in ?? ()
> (gdb) bt
> #0 0x768e8314 in ?? ()
> #1 0x768e8306 in ?? ()
> Backtrace stopped: previous frame identical to this frame (corrupt stack?)
> (gdb)
>
> which is not exactly helpful but the same I get without the patch. (and
> yes, the patch IS applied.)
>
> >We have been regularly testing against armhf on the Qemu Versatile
> Express
> >emulator, under which it turns out this bug is not reproducible.
> Once we
> >tried with real hardware (RPi B+) it showed up.
>
> RPi 2 here.
>
> Regards,
>
> Rene
>
--
Tim Eves
NRSI - SIL International
