radiance version 4R0+20100729-1 failed to build on amd64 with GCC-4.6/oneiric

[Matthias Klose]

radiance version 4R0+20100729-1 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2467069

Details about the rebuild:
https://lists.ubuntu.com/archives/ubuntu-devel/2011-April/033042.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2467069/+files/buildlog_ubuntu-natty-amd64.radiance_4R0%2B20100729-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 2072 lines into the build log:

ln -s /build/buildd/radiance-4R0+20100729/debian/radiance/usr/lib/radiance/dev/ogl.hdi /build/buildd/radiance-4R0+20100729/debian/radiance/usr/lib/radiance/dev/oglh.hdi
cc -I../common -L../lib -O3 -funroll-loops -Wall -g -Dlinux -D_FILE_OFFSET_BITS=64 -L/usr/X11R6/lib -I/usr/include/X11 -DNOSTEREO -DDEVPATH=\"/build/buildd/radiance-4R0+20100729/debian/radiance/usr/lib/radiance/dev\" -DDOBJ -c rhd_ogl.c
rhd_ogl.c:100:35: warning: 'ourwhite' defined but not used [-Wunused-variable]
rhd_ogl.c: In function 'dev_flush':
rhd_ogl.c:503:6: warning: 'ndrawn' may be used uninitialized in this function [-Wuninitialized]
mv -f rhd_ogl.o rhd_oglo.o
cc -I../common -L../lib -O3 -funroll-loops -Wall -g -Dlinux -D_FILE_OFFSET_BITS=64 -L/usr/X11R6/lib -I/usr/include/X11 -DNOSTEREO -DDEVPATH=\"/build/buildd/radiance-4R0+20100729/debian/radiance/usr/lib/radiance/dev\" -c -o rhdobj.o rhdobj.c
rhdobj.c:85:1: warning: variably modified 'ssamp' at file scope [enabled by default]
rhdobj.c: In function 'ssph_neigh':
rhdobj.c:221:15: error: storage size of 'neighlist' isn't constant
rhdobj.c:221:15: warning: unused variable 'neighlist' [-Wunused-variable]
make[1]: *** [rhdobj.o] Error 1
make[1]: Leaving directory `/build/buildd/radiance-4R0+20100729/src/hd'
make: *** [install-arch] Error 2
dpkg-buildpackage: error: /usr/bin/fakeroot debian/rules binary-arch gave error exit status 2
******************************************************************************
Build finished at 20110426-0403
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/radiance-4R0+20100729