likely SPECCPU2006 miscompilation

Using clang r107598 at -O1 to create reportable SPECINT 2006 results, I'm getting the output below, which is almost certainly due to a miscompilation. Known problem?

Thanks,

John

   Running (#3) 403.gcc ref base i386-m32-gcc42-nn default
/home/regehr/z/specCPU2006/bin/specinvoke -d /home/regehr/z/specCPU2006/benchspec/CPU2006/403.gcc/run/run_base_ref_i386-m32-gcc42-nn.0000 -e speccmds.err -o speccmds.stdout -f speccmds.cmd -C

403.gcc: copy #0 non-zero return code (rc=1, signal=0)