sv_newmortal() is faster than sv_2mortal(newSV(0))
-rw-r--r-- .gitignore
-rw-r--r-- ChangeLog
-rw-r--r-- MANIFEST.SKIP
-rw-r--r-- Makefile.PL
-rw-r--r-- XS.xs
drwxr-xr-x lib
drwxr-xr-x t