$ perl -c 959680.pl Type of arg 1 to push must be array (not scalar dereference) at 959680.pl line 95, near "@list;" Type of arg 1 to push must be array (not scalar dereference) at 959680.pl line 96, near "@callers;" Type of arg 1 to push must be array (not scalar dereference) at 959680.pl line 112, near "@list;" 959680.pl had compilation errors.