CLONE is run, and CLONE can run Perl code that causes their reference counts
to increase from then return to zero, which prematurely triggers sv_free().
-commit a77cd7b8173d6381e0eb4d3296627023900d0cb4
+commit a77cd7b8173d6381e0eb4d3296627023900d0cb4 # NODOC
Author: H.Merijn Brand <h.m.brand@xs4all.nl>
Date: Tue May 25 18:26:37 2010 +0200