From 2f8edad0d37e91319b6ba10b3745327ea49c179b Mon Sep 17 00:00:00 2001
From: Nicholas Clark <nick@ccl4.org>
Date: Mon, 21 Jan 2008 11:50:52 +0000
Subject: Give G_VOID, G_SCALAR and G_ARRAY the same numeric values as
 OPf_WANT_VOID, OPf_WANT_SCALAR and OPf_WANT_LIST.

p4raw-id: //depot/perl@33025
---
 cop.h  | 20 ++++++++++----------
 op.h   |  5 +----
 perl.c |  5 +++++
 3 files changed, 16 insertions(+), 14 deletions(-)

diff --git a/cop.h b/cop.h
index 641fb66ee9..f41e67acec 100644
--- a/cop.h
+++ b/cop.h
@@ -737,20 +737,20 @@ L<perlcall>.
 =cut
 */
 
-#define G_SCALAR	0
-#define G_ARRAY		1
-#define G_VOID		128	/* skip this bit when adding flags below */
-#define G_WANT		(128|1)
+#define G_SCALAR	2
+#define G_ARRAY		3
+#define G_VOID		1
+#define G_WANT		3
 
 /* extra flags for Perl_call_* routines */
-#define G_DISCARD	2	/* Call FREETMPS.
+#define G_DISCARD	4	/* Call FREETMPS.
 				   Don't change this without consulting the
 				   hash actions codes defined in hv.h */
-#define G_EVAL		4	/* Assume eval {} around subroutine call. */
-#define G_NOARGS	8	/* Don't construct a @_ array. */
-#define G_KEEPERR      16	/* Append errors to $@, don't overwrite it */
-#define G_NODEBUG      32	/* Disable debugging at toplevel.  */
-#define G_METHOD       64       /* Calling method. */
+#define G_EVAL		8	/* Assume eval {} around subroutine call. */
+#define G_NOARGS       16	/* Don't construct a @_ array. */
+#define G_KEEPERR      32	/* Append errors to $@, don't overwrite it */
+#define G_NODEBUG      64	/* Disable debugging at toplevel.  */
+#define G_METHOD      128       /* Calling method. */
 #define G_FAKINGEVAL  256	/* Faking an eval context for call_sv or
 				   fold_constants. */
 
diff --git a/op.h b/op.h
index fa1230d544..63390ea196 100644
--- a/op.h
+++ b/op.h
@@ -70,10 +70,7 @@
 	 ((op)->op_flags & OPf_WANT) == OPf_WANT_LIST   ? G_ARRAY   : \
 	 dfl)
 
-#define OP_GIMME_REVERSE(flags)			\
-	((flags & G_VOID) ? OPf_WANT_VOID :	\
-	(flags & G_ARRAY) ? OPf_WANT_LIST :	\
-			    OPf_WANT_SCALAR)
+#define OP_GIMME_REVERSE(flags)	((flags) & G_WANT)
 
 /*
 =head1 "Gimme" Values
diff --git a/perl.c b/perl.c
index 7dc6d14a2e..907f9cf8e4 100644
--- a/perl.c
+++ b/perl.c
@@ -2578,6 +2578,11 @@ Perl_call_sv(pTHX_ SV *sv, I32 flags)
 	ENTER;
 	SAVETMPS;
     }
+    if (!(flags & G_WANT)) {
+	/* Backwards compatibility - as G_SCALAR was 0, it could be omitted.
+	 */
+	flags |= G_SCALAR;
+    }
 
     Zero(&myop, 1, LOGOP);
     myop.op_next = NULL;
-- 
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