Use alloca to keep g++ happy.  (clang++ liked it before the change.)
Use alloca to keep g++ happy.  (clang++ liked it before the change.)

ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools,ubtue/ub_tools