I think for now these have to be disabled by default.

p4raw-id: //depot/perl@24572

1 files changed, 1 insertions, 1 deletions

diff --git a/av.h b/av.h
index a1f0259795..488e098544 100644
--- a/av.h
+++ b/av.h
@@ -26,7 +26,7 @@ struct xpvav {
     HV*		xmg_stash;	/* class package */
 };
 
-#if 0
+#if !defined(PERL_EXPERIMENTAL_LAYOUT)
 typedef struct xpvav xpvav_allocated;
 #else
 typedef struct {