Better ithreads cloning - add all SVs with a 0 refcnt to the temps stack.

Track all SVs created by sv_dup() that have a 0 reference count. If they still
have a 0 reference count at the end of cloning, assign a reference to each to
the temps stack. As the temps stack is cleared at thread exit, SVs book keeping
will be correct and consistent before perl_destruct() makes its check for
leaked scalars.

Remove special case code for checking each @_ and the parent's temp stack.

1 files changed, 1 insertions, 0 deletions

diff --git a/sv.h b/sv.h
index 744687a6a8..3f31920982 100644
--- a/sv.h
+++ b/sv.h
@@ -1940,6 +1940,7 @@ struct clone_params {
   UV  flags;
   PerlInterpreter *proto_perl;
   PerlInterpreter *new_perl;
+  AV *unreferenced;
 };
 
 /*