From 2e0ae2d3c84912a75f62cfca2c31658c66304493 Mon Sep 17 00:00:00 2001
From: Rafael Garcia-Suarez <rgarciasuarez@gmail.com>
Date: Tue, 7 Mar 2006 16:49:58 +0000
Subject: [PATCH 1/1] $[ = 2 should not warn.

p4raw-id: //depot/perl@27402
---
 op.c              | 5 ++++-
 t/lib/warnings/op | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/op.c b/op.c
index 1331b15..de36ced 100644
--- a/op.c
+++ b/op.c
@@ -776,6 +776,8 @@ Perl_scalarvoid(pTHX_ OP *o)
 	else {
 	    if (ckWARN(WARN_VOID)) {
 		useless = "a constant";
+		if (o->op_private & OPpCONST_ARYBASE)
+		    useless = 0;
 		/* don't warn on optimised away booleans, eg 
 		 * use constant Foo, 5; Foo || print; */
 		if (cSVOPo->op_private & OPpCONST_SHORTCIRCUIT)
@@ -1035,7 +1037,7 @@ Perl_mod(pTHX_ OP *o, I32 type)
 	PL_modcount++;
 	return o;
     case OP_CONST:
-	if (!(o->op_private & (OPpCONST_ARYBASE)))
+	if (!(o->op_private & OPpCONST_ARYBASE))
 	    goto nomod;
 	localize = 0;
 	if (PL_eval_start && PL_eval_start->op_type == OP_CONST) {
@@ -3466,6 +3468,7 @@ Perl_newASSIGNOP(pTHX_ I32 flags, OP *left, I32 optype, OP *right)
 	    PL_eval_start = 0;
 	else {
 	    o = newSVOP(OP_CONST, 0, newSViv(PL_compiling.cop_arybase));
+	    o->op_private |= OPpCONST_ARYBASE;
 	}
     }
     return o;
diff --git a/t/lib/warnings/op b/t/lib/warnings/op
index 4f00c12..891677f 100644
--- a/t/lib/warnings/op
+++ b/t/lib/warnings/op
@@ -528,6 +528,7 @@ use warnings 'void' ;
 5 || print "bad\n";	# test OPpCONST_SHORTCIRCUIT
 use constant U => undef;
 print "boo\n" if U;	# test OPpCONST_SHORTCIRCUIT
+$[ = 2; # should not warn
 no warnings 'void' ;
 "abc"; # OP_CONST
 7 ; # OP_CONST
-- 
1.8.3.1