Add a GV_NOADD_NOINIT flag to gv_fetch{pv,pvn,sv} that disables

addition of new typeglobs, and also disables initialisation of any
typeglob placeholders. Needed to make the new constant subroutine
proxy references work efficiently.

p4raw-id: //depot/perl@26425

1 files changed, 5 insertions, 0 deletions

diff --git a/gv.h b/gv.h
index f1794943e4..73814a82ec 100644
--- a/gv.h
+++ b/gv.h
@@ -162,6 +162,11 @@ Return the SV from the GV.
 #define GV_ADDWARN	0x04	/* add, but warn if symbol wasn't already there */
 #define GV_ADDINEVAL	0x08	/* add, as though we're doing so within an eval */
 #define GV_NOINIT	0x10	/* add, but don't init symbol, if type != PVGV */
+/* This is used by toke.c to avoid turing placeholder constants in the symbol
+   table into full PVGVs with attached constant subroutines.  */
+#define GV_NOADD_NOINIT	0x20	/* Don't add the symbol if it's not there.
+				   Don't init it if it is there but ! PVGV */
+
 /*      SVf_UTF8 (more accurately the return value from SvUTF8) is also valid
 	as a flag to gv_fetch_pvn_flags, so ensure it lies outside this range.
 */