add stub docs for ext/B, other minor tweaks

p4raw-id: //depot/perl@1518

1 files changed, 1 insertions, 1 deletions

diff --git a/sv.c b/sv.c
index edee809782..46b51a344f 100644
--- a/sv.c
+++ b/sv.c
@@ -3028,7 +3028,7 @@ sv_free(SV *sv)
 	return;
 #ifdef DEBUGGING
     if (SvTEMP(sv)) {
-	warn("Attempt to free temp prematurely: %s", SvPEEK(sv));
+	warn("Attempt to free temp prematurely: SV 0x%lx", (unsigned long)sv);
 	return;
     }
 #endif