Better fix for alloca missing.
Better fix for alloca missing.

jpflori/flint2,wbhart/flint2,jpflori/flint2,fredrik-johansson/flint2,jpflori/flint2,wbhart/flint2,fredrik-johansson/flint2,dsroche/flint2,dsroche/flint2,dsroche/flint2,fredrik-johansson/flint2,wbhart/flint2,dsroche/flint2,jpflori/flint2