From: Dave Mitchell <davem@fdisolutions.com>
Date: Fri, 26 May 2006 18:50:34 +0000 (+0000)
Subject: stop eval "sub{" leaking
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=a8ff2fa6faa01a256e2aff8c5e61378859eb3d62;p=p5sagit%2Fp5-mst-13.2.git

stop eval "sub{" leaking

p4raw-id: //depot/perl@28314
---

diff --git a/madly.act b/madly.act
index 85626c9..788efa8 100644
--- a/madly.act
+++ b/madly.act
@@ -431,7 +431,8 @@ case 2:
 
   case 61:
 #line 446 "madly.y"
-    { (yyval.opval) = newFORM((yyvsp[-2].ival), (yyvsp[-1].opval), (yyvsp[0].opval));
+    { SvREFCNT_inc(PL_compcv);
+			  (yyval.opval) = newFORM((yyvsp[-2].ival), (yyvsp[-1].opval), (yyvsp[0].opval));
 			  prepend_madprops((yyvsp[-3].tkval)->tk_mad, (yyval.opval), 'F');
 			  (yyvsp[-3].tkval)->tk_mad = 0;
 			  token_free((yyvsp[-3].tkval));
@@ -439,25 +440,27 @@ case 2:
     break;
 
   case 62:
-#line 453 "madly.y"
+#line 454 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 63:
-#line 454 "madly.y"
+#line 455 "madly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 64:
-#line 459 "madly.y"
-    { (yyval.opval) = newMYSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval));
+#line 460 "madly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyval.opval) = newMYSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-5].tkval),(yyval.opval),'d');
 			;}
     break;
 
   case 65:
-#line 466 "madly.y"
-    { OP* o = newSVOP(OP_ANONCODE, 0,
+#line 468 "madly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  OP* o = newSVOP(OP_ANONCODE, 0,
 			    (SV*)newATTRSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)));
 			  (yyval.opval) = newOP(OP_NULL,0);
 			  op_getmad(o,(yyval.opval),'&');
@@ -471,22 +474,25 @@ case 2:
     break;
 
   case 66:
-#line 480 "madly.y"
-    { (yyval.ival) = start_subparse(FALSE, 0); ;}
+#line 483 "madly.y"
+    { (yyval.ival) = start_subparse(FALSE, 0);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 67:
-#line 484 "madly.y"
-    { (yyval.ival) = start_subparse(FALSE, CVf_ANON); ;}
+#line 489 "madly.y"
+    { (yyval.ival) = start_subparse(FALSE, CVf_ANON);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 68:
-#line 488 "madly.y"
-    { (yyval.ival) = start_subparse(TRUE, 0); ;}
+#line 494 "madly.y"
+    { (yyval.ival) = start_subparse(TRUE, 0);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 69:
-#line 492 "madly.y"
+#line 499 "madly.y"
     { const char *const name = SvPV_nolen_const(((SVOP*)(yyvsp[0].opval))->op_sv);
 			  if (strEQ(name, "BEGIN") || strEQ(name, "END")
 			      || strEQ(name, "INIT") || strEQ(name, "CHECK"))
@@ -495,57 +501,57 @@ case 2:
     break;
 
   case 70:
-#line 501 "madly.y"
+#line 508 "madly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 72:
-#line 507 "madly.y"
+#line 514 "madly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 73:
-#line 509 "madly.y"
+#line 516 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval);
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),':');
 			;}
     break;
 
   case 74:
-#line 513 "madly.y"
+#line 520 "madly.y"
     { (yyval.opval) = newOP(OP_NULL, 0);
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),':');
 			;}
     break;
 
   case 75:
-#line 520 "madly.y"
+#line 527 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval);
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),':');
 			;}
     break;
 
   case 76:
-#line 524 "madly.y"
+#line 531 "madly.y"
     { (yyval.opval) = newOP(OP_NULL, 0);
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),':');
 			;}
     break;
 
   case 77:
-#line 530 "madly.y"
+#line 537 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 78:
-#line 531 "madly.y"
+#line 538 "madly.y"
     { (yyval.opval) = newOP(OP_NULL,0); PL_expect = XSTATE;
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),';');
 			;}
     break;
 
   case 79:
-#line 537 "madly.y"
+#line 544 "madly.y"
     { (yyval.opval) = package((yyvsp[-1].opval));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),';');
@@ -553,13 +559,14 @@ case 2:
     break;
 
   case 80:
-#line 544 "madly.y"
+#line 551 "madly.y"
     { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ ;}
     break;
 
   case 81:
-#line 546 "madly.y"
-    { (yyval.opval) = utilize(((yyvsp[-6].tkval))->tk_lval.ival, (yyvsp[-5].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval));
+#line 553 "madly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyval.opval) = utilize(((yyvsp[-6].tkval))->tk_lval.ival, (yyvsp[-5].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval));
 			  token_getmad((yyvsp[-6].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),';');
 			  if (PL_rsfp_filters && AvFILLp(PL_rsfp_filters) >= 0)
@@ -568,28 +575,28 @@ case 2:
     break;
 
   case 82:
-#line 556 "madly.y"
+#line 564 "madly.y"
     { (yyval.opval) = newLOGOP(OP_AND, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 83:
-#line 560 "madly.y"
+#line 568 "madly.y"
     { (yyval.opval) = newLOGOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 84:
-#line 564 "madly.y"
+#line 572 "madly.y"
     { (yyval.opval) = newLOGOP(OP_DOR, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 86:
-#line 572 "madly.y"
+#line 580 "madly.y"
     { OP* op = newNULLLIST();
 			  token_getmad((yyvsp[0].tkval),op,',');
 			  (yyval.opval) = append_elem(OP_LIST, (yyvsp[-1].opval), op);
@@ -597,7 +604,7 @@ case 2:
     break;
 
   case 87:
-#line 577 "madly.y"
+#line 585 "madly.y"
     { 
 			  (yyvsp[0].opval) = newUNOP(OP_NULL, 0, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyvsp[0].opval),',');
@@ -606,7 +613,7 @@ case 2:
     break;
 
   case 89:
-#line 587 "madly.y"
+#line 595 "madly.y"
     { (yyval.opval) = convert(((yyvsp[-2].tkval))->tk_lval.ival, OPf_STACKED,
 				prepend_elem(OP_LIST, newGVREF(((yyvsp[-2].tkval))->tk_lval.ival,(yyvsp[-1].opval)), (yyvsp[0].opval)) );
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'o');
@@ -614,7 +621,7 @@ case 2:
     break;
 
   case 90:
-#line 592 "madly.y"
+#line 600 "madly.y"
     { (yyval.opval) = convert(((yyvsp[-4].tkval))->tk_lval.ival, OPf_STACKED,
 				prepend_elem(OP_LIST, newGVREF(((yyvsp[-4].tkval))->tk_lval.ival,(yyvsp[-2].opval)), (yyvsp[-1].opval)) );
 			  token_getmad((yyvsp[-4].tkval),(yyval.opval),'o');
@@ -624,7 +631,7 @@ case 2:
     break;
 
   case 91:
-#line 599 "madly.y"
+#line 607 "madly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, scalar((yyvsp[-5].opval)), (yyvsp[-1].opval)),
@@ -636,7 +643,7 @@ case 2:
     break;
 
   case 92:
-#line 608 "madly.y"
+#line 616 "madly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST, scalar((yyvsp[-2].opval)),
 				    newUNOP(OP_METHOD, 0, (yyvsp[0].opval))));
@@ -645,7 +652,7 @@ case 2:
     break;
 
   case 93:
-#line 614 "madly.y"
+#line 622 "madly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, (yyvsp[-1].opval), (yyvsp[0].opval)),
@@ -654,7 +661,7 @@ case 2:
     break;
 
   case 94:
-#line 620 "madly.y"
+#line 628 "madly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, (yyvsp[-3].opval), (yyvsp[-1].opval)),
@@ -665,14 +672,14 @@ case 2:
     break;
 
   case 95:
-#line 628 "madly.y"
+#line 636 "madly.y"
     { (yyval.opval) = convert(((yyvsp[-1].tkval))->tk_lval.ival, 0, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 96:
-#line 632 "madly.y"
+#line 640 "madly.y"
     { (yyval.opval) = convert(((yyvsp[-3].tkval))->tk_lval.ival, 0, (yyvsp[-1].opval));
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'(');
@@ -681,12 +688,13 @@ case 2:
     break;
 
   case 97:
-#line 638 "madly.y"
-    { (yyvsp[0].opval) = newANONATTRSUB((yyvsp[-1].ival), 0, Nullop, (yyvsp[0].opval)); ;}
+#line 646 "madly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyvsp[0].opval) = newANONATTRSUB((yyvsp[-1].ival), 0, Nullop, (yyvsp[0].opval)); ;}
     break;
 
   case 98:
-#line 640 "madly.y"
+#line 649 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				 append_elem(OP_LIST,
 				   prepend_elem(OP_LIST, (yyvsp[-2].opval), (yyvsp[0].opval)), (yyvsp[-4].opval)));
@@ -694,7 +702,7 @@ case 2:
     break;
 
   case 101:
-#line 655 "madly.y"
+#line 664 "madly.y"
     { (yyval.opval) = newBINOP(OP_GELEM, 0, (yyvsp[-4].opval), scalar((yyvsp[-2].opval)));
 			    PL_expect = XOPERATOR;
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'{');
@@ -704,7 +712,7 @@ case 2:
     break;
 
   case 102:
-#line 662 "madly.y"
+#line 671 "madly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0, oopsAV((yyvsp[-3].opval)), scalar((yyvsp[-1].opval)));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'[');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),']');
@@ -712,7 +720,7 @@ case 2:
     break;
 
   case 103:
-#line 667 "madly.y"
+#line 676 "madly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0,
 					ref(newAVREF((yyvsp[-4].opval)),OP_RV2AV),
 					scalar((yyvsp[-1].opval)));
@@ -723,7 +731,7 @@ case 2:
     break;
 
   case 104:
-#line 675 "madly.y"
+#line 684 "madly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0,
 					ref(newAVREF((yyvsp[-3].opval)),OP_RV2AV),
 					scalar((yyvsp[-1].opval)));
@@ -733,7 +741,7 @@ case 2:
     break;
 
   case 105:
-#line 682 "madly.y"
+#line 691 "madly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0, oopsHV((yyvsp[-4].opval)), jmaybe((yyvsp[-2].opval)));
 			    PL_expect = XOPERATOR;
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'{');
@@ -743,7 +751,7 @@ case 2:
     break;
 
   case 106:
-#line 689 "madly.y"
+#line 698 "madly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0,
 					ref(newHVREF((yyvsp[-5].opval)),OP_RV2HV),
 					jmaybe((yyvsp[-2].opval)));
@@ -756,7 +764,7 @@ case 2:
     break;
 
   case 107:
-#line 699 "madly.y"
+#line 708 "madly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0,
 					ref(newHVREF((yyvsp[-4].opval)),OP_RV2HV),
 					jmaybe((yyvsp[-2].opval)));
@@ -768,7 +776,7 @@ case 2:
     break;
 
   case 108:
-#line 708 "madly.y"
+#line 717 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   newCVREF(0, scalar((yyvsp[-3].opval))));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'a');
@@ -778,7 +786,7 @@ case 2:
     break;
 
   case 109:
-#line 715 "madly.y"
+#line 724 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   append_elem(OP_LIST, (yyvsp[-1].opval),
 				       newCVREF(0, scalar((yyvsp[-4].opval)))));
@@ -789,7 +797,7 @@ case 2:
     break;
 
   case 110:
-#line 724 "madly.y"
+#line 733 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   append_elem(OP_LIST, (yyvsp[-1].opval),
 					       newCVREF(0, scalar((yyvsp[-3].opval)))));
@@ -799,7 +807,7 @@ case 2:
     break;
 
   case 111:
-#line 731 "madly.y"
+#line 740 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   newCVREF(0, scalar((yyvsp[-2].opval))));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
@@ -808,7 +816,7 @@ case 2:
     break;
 
   case 112:
-#line 737 "madly.y"
+#line 746 "madly.y"
     { (yyval.opval) = newSLICEOP(0, (yyvsp[-1].opval), (yyvsp[-4].opval));
 			  token_getmad((yyvsp[-5].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),')');
@@ -818,7 +826,7 @@ case 2:
     break;
 
   case 113:
-#line 744 "madly.y"
+#line 753 "madly.y"
     { (yyval.opval) = newSLICEOP(0, (yyvsp[-1].opval), Nullop);
 			  token_getmad((yyvsp[-4].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),')');
@@ -828,21 +836,21 @@ case 2:
     break;
 
   case 114:
-#line 754 "madly.y"
+#line 763 "madly.y"
     { (yyval.opval) = newASSIGNOP(OPf_STACKED, (yyvsp[-2].opval), ((yyvsp[-1].tkval))->tk_lval.ival, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 115:
-#line 758 "madly.y"
+#line 767 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 116:
-#line 762 "madly.y"
+#line 771 "madly.y"
     {   if (((yyvsp[-1].tkval))->tk_lval.ival != OP_REPEAT)
 				scalar((yyvsp[-2].opval));
 			    (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, (yyvsp[-2].opval), scalar((yyvsp[0].opval)));
@@ -851,49 +859,49 @@ case 2:
     break;
 
   case 117:
-#line 768 "madly.y"
+#line 777 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 118:
-#line 772 "madly.y"
+#line 781 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 119:
-#line 776 "madly.y"
+#line 785 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 120:
-#line 780 "madly.y"
+#line 789 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 121:
-#line 784 "madly.y"
+#line 793 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 122:
-#line 788 "madly.y"
+#line 797 "madly.y"
     { (yyval.opval) = newBINOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 123:
-#line 792 "madly.y"
+#line 801 "madly.y"
     { UNOP *op;
 			  (yyval.opval) = newRANGE(((yyvsp[-1].tkval))->tk_lval.ival, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));
 			  op = (UNOP*)(yyval.opval);
@@ -905,28 +913,28 @@ case 2:
     break;
 
   case 124:
-#line 801 "madly.y"
+#line 810 "madly.y"
     { (yyval.opval) = newLOGOP(OP_AND, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 125:
-#line 805 "madly.y"
+#line 814 "madly.y"
     { (yyval.opval) = newLOGOP(OP_OR, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 126:
-#line 809 "madly.y"
+#line 818 "madly.y"
     { (yyval.opval) = newLOGOP(OP_DOR, 0, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 127:
-#line 813 "madly.y"
+#line 822 "madly.y"
     { (yyval.opval) = bind_match(((yyvsp[-1].tkval))->tk_lval.ival, (yyvsp[-2].opval), (yyvsp[0].opval));
 			  if ((yyval.opval)->op_type == OP_NOT)
 			      token_getmad((yyvsp[-1].tkval),((UNOP*)(yyval.opval))->op_first,'~');
@@ -936,35 +944,35 @@ case 2:
     break;
 
   case 128:
-#line 823 "madly.y"
+#line 832 "madly.y"
     { (yyval.opval) = newUNOP(OP_NEGATE, 0, scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 129:
-#line 827 "madly.y"
+#line 836 "madly.y"
     { (yyval.opval) = newUNOP(OP_NULL, 0, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'+');
 			;}
     break;
 
   case 130:
-#line 831 "madly.y"
+#line 840 "madly.y"
     { (yyval.opval) = newUNOP(OP_NOT, 0, scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 131:
-#line 835 "madly.y"
+#line 844 "madly.y"
     { (yyval.opval) = newUNOP(OP_COMPLEMENT, 0, scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 132:
-#line 839 "madly.y"
+#line 848 "madly.y"
     { (yyval.opval) = newUNOP(OP_POSTINC, 0,
 					mod(scalar((yyvsp[-1].opval)), OP_POSTINC));
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),'o');
@@ -972,7 +980,7 @@ case 2:
     break;
 
   case 133:
-#line 844 "madly.y"
+#line 853 "madly.y"
     { (yyval.opval) = newUNOP(OP_POSTDEC, 0,
 					mod(scalar((yyvsp[-1].opval)), OP_POSTDEC));
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),'o');
@@ -980,7 +988,7 @@ case 2:
     break;
 
   case 134:
-#line 849 "madly.y"
+#line 858 "madly.y"
     { (yyval.opval) = newUNOP(OP_PREINC, 0,
 					mod(scalar((yyvsp[0].opval)), OP_PREINC));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
@@ -988,7 +996,7 @@ case 2:
     break;
 
   case 135:
-#line 854 "madly.y"
+#line 863 "madly.y"
     { (yyval.opval) = newUNOP(OP_PREDEC, 0,
 					mod(scalar((yyvsp[0].opval)), OP_PREDEC));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
@@ -996,7 +1004,7 @@ case 2:
     break;
 
   case 136:
-#line 863 "madly.y"
+#line 872 "madly.y"
     { (yyval.opval) = newANONLIST((yyvsp[-1].opval));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'[');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),']');
@@ -1004,7 +1012,7 @@ case 2:
     break;
 
   case 137:
-#line 868 "madly.y"
+#line 877 "madly.y"
     { (yyval.opval) = newANONLIST(Nullop);
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'[');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),']');
@@ -1012,7 +1020,7 @@ case 2:
     break;
 
   case 138:
-#line 873 "madly.y"
+#line 882 "madly.y"
     { (yyval.opval) = newANONHASH((yyvsp[-2].opval));
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'{');
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),';');
@@ -1021,7 +1029,7 @@ case 2:
     break;
 
   case 139:
-#line 879 "madly.y"
+#line 888 "madly.y"
     { (yyval.opval) = newANONHASH(Nullop);
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'{');
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),';');
@@ -1030,8 +1038,9 @@ case 2:
     break;
 
   case 140:
-#line 885 "madly.y"
-    { (yyval.opval) = newANONATTRSUB((yyvsp[-3].ival), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval));
+#line 894 "madly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyval.opval) = newANONATTRSUB((yyvsp[-3].ival), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-4].tkval),(yyval.opval),'o');
 			  op_getmad((yyvsp[-2].opval),(yyval.opval),'s');
 			  op_getmad((yyvsp[-1].opval),(yyval.opval),'a');
@@ -1039,21 +1048,21 @@ case 2:
     break;
 
   case 141:
-#line 895 "madly.y"
+#line 905 "madly.y"
     { (yyval.opval) = dofile((yyvsp[0].opval), (yyvsp[-1].tkval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 142:
-#line 899 "madly.y"
+#line 909 "madly.y"
     { (yyval.opval) = newUNOP(OP_NULL, OPf_SPECIAL, scope((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'D');
 			;}
     break;
 
   case 143:
-#line 903 "madly.y"
+#line 913 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB,
 			    OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
@@ -1068,7 +1077,7 @@ case 2:
     break;
 
   case 144:
-#line 915 "madly.y"
+#line 925 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB,
 			    OPf_SPECIAL|OPf_STACKED,
 			    append_elem(OP_LIST,
@@ -1084,7 +1093,7 @@ case 2:
     break;
 
   case 145:
-#line 928 "madly.y"
+#line 938 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
 				scalar(newCVREF(0,scalar((yyvsp[-2].opval)))), Nullop)); dep();
@@ -1095,7 +1104,7 @@ case 2:
     break;
 
   case 146:
-#line 936 "madly.y"
+#line 946 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
 				(yyvsp[-1].opval),
@@ -1107,7 +1116,7 @@ case 2:
     break;
 
   case 151:
-#line 952 "madly.y"
+#line 962 "madly.y"
     { (yyval.opval) = newCONDOP(0, (yyvsp[-4].opval), (yyvsp[-2].opval), (yyvsp[0].opval));
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'?');
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),':');
@@ -1115,26 +1124,26 @@ case 2:
     break;
 
   case 152:
-#line 957 "madly.y"
+#line 967 "madly.y"
     { (yyval.opval) = newUNOP(OP_REFGEN, 0, mod((yyvsp[0].opval),OP_REFGEN));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 153:
-#line 961 "madly.y"
+#line 971 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 154:
-#line 963 "madly.y"
+#line 973 "madly.y"
     { (yyval.opval) = localize((yyvsp[0].opval),((yyvsp[-1].tkval))->tk_lval.ival);
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'d');
 			;}
     break;
 
   case 155:
-#line 967 "madly.y"
+#line 977 "madly.y"
     { (yyval.opval) = sawparens(newUNOP(OP_NULL,0,(yyvsp[-1].opval)));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1142,7 +1151,7 @@ case 2:
     break;
 
   case 156:
-#line 972 "madly.y"
+#line 982 "madly.y"
     { (yyval.opval) = sawparens(newNULLLIST());
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1150,37 +1159,37 @@ case 2:
     break;
 
   case 157:
-#line 977 "madly.y"
+#line 987 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 158:
-#line 979 "madly.y"
+#line 989 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 159:
-#line 981 "madly.y"
+#line 991 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 160:
-#line 983 "madly.y"
+#line 993 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 161:
-#line 985 "madly.y"
+#line 995 "madly.y"
     { (yyval.opval) = newUNOP(OP_AV2ARYLEN, 0, ref((yyvsp[0].opval), OP_AV2ARYLEN));;}
     break;
 
   case 162:
-#line 987 "madly.y"
+#line 997 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 163:
-#line 989 "madly.y"
+#line 999 "madly.y"
     { (yyval.opval) = prepend_elem(OP_ASLICE,
 				newOP(OP_PUSHMARK, 0),
 				    newLISTOP(OP_ASLICE, 0,
@@ -1192,7 +1201,7 @@ case 2:
     break;
 
   case 164:
-#line 998 "madly.y"
+#line 1008 "madly.y"
     { (yyval.opval) = prepend_elem(OP_HSLICE,
 				newOP(OP_PUSHMARK, 0),
 				    newLISTOP(OP_HSLICE, 0,
@@ -1206,17 +1215,17 @@ case 2:
     break;
 
   case 165:
-#line 1009 "madly.y"
+#line 1019 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 166:
-#line 1011 "madly.y"
+#line 1021 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, 0, scalar((yyvsp[0].opval))); ;}
     break;
 
   case 167:
-#line 1013 "madly.y"
+#line 1023 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar((yyvsp[-2].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1224,7 +1233,7 @@ case 2:
     break;
 
   case 168:
-#line 1018 "madly.y"
+#line 1028 "madly.y"
     { OP* op;
 			  (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST, (yyvsp[-1].opval), scalar((yyvsp[-3].opval))));
@@ -1238,7 +1247,7 @@ case 2:
     break;
 
   case 169:
-#line 1029 "madly.y"
+#line 1039 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 			    append_elem(OP_LIST, (yyvsp[0].opval), scalar((yyvsp[-1].opval))));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'o');
@@ -1246,7 +1255,7 @@ case 2:
     break;
 
   case 170:
-#line 1034 "madly.y"
+#line 1044 "madly.y"
     { (yyval.opval) = newOP(((yyvsp[0].tkval))->tk_lval.ival, OPf_SPECIAL);
 			    PL_hints |= HINT_BLOCK_SCOPE;
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),'o');
@@ -1254,65 +1263,65 @@ case 2:
     break;
 
   case 171:
-#line 1039 "madly.y"
+#line 1049 "madly.y"
     { (yyval.opval) = newLOOPEX(((yyvsp[-1].tkval))->tk_lval.ival,(yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 172:
-#line 1043 "madly.y"
+#line 1053 "madly.y"
     { (yyval.opval) = newUNOP(OP_NOT, 0, scalar((yyvsp[0].opval)));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 173:
-#line 1047 "madly.y"
+#line 1057 "madly.y"
     { (yyval.opval) = newOP(((yyvsp[0].tkval))->tk_lval.ival, 0);
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 174:
-#line 1051 "madly.y"
+#line 1061 "madly.y"
     { (yyval.opval) = newUNOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 175:
-#line 1055 "madly.y"
+#line 1065 "madly.y"
     { (yyval.opval) = newUNOP(((yyvsp[-1].tkval))->tk_lval.ival, 0, (yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 176:
-#line 1059 "madly.y"
+#line 1069 "madly.y"
     { (yyval.opval) = newOP(OP_REQUIRE, (yyvsp[0].tkval) ? OPf_SPECIAL : 0); ;}
     break;
 
   case 177:
-#line 1061 "madly.y"
+#line 1071 "madly.y"
     { (yyval.opval) = newUNOP(OP_REQUIRE, (yyvsp[-1].tkval) ? OPf_SPECIAL : 0, (yyvsp[0].opval)); ;}
     break;
 
   case 178:
-#line 1063 "madly.y"
+#line 1073 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 			    append_elem(OP_LIST, (yyvsp[0].opval), scalar((yyvsp[-1].opval)))); ;}
     break;
 
   case 179:
-#line 1066 "madly.y"
+#line 1076 "madly.y"
     { (yyval.opval) = newOP(((yyvsp[0].tkval))->tk_lval.ival, 0);
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),'o');
 			;}
     break;
 
   case 180:
-#line 1070 "madly.y"
+#line 1080 "madly.y"
     { (yyval.opval) = newOP(((yyvsp[-2].tkval))->tk_lval.ival, 0);
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
@@ -1321,13 +1330,13 @@ case 2:
     break;
 
   case 181:
-#line 1076 "madly.y"
+#line 1086 "madly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				scalar((yyvsp[0].opval))); ;}
     break;
 
   case 182:
-#line 1079 "madly.y"
+#line 1089 "madly.y"
     { (yyval.opval) = newOP(((yyvsp[-2].tkval))->tk_lval.ival, OPf_SPECIAL);
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
@@ -1336,7 +1345,7 @@ case 2:
     break;
 
   case 183:
-#line 1085 "madly.y"
+#line 1095 "madly.y"
     { (yyval.opval) = newUNOP(((yyvsp[-3].tkval))->tk_lval.ival, 0, (yyvsp[-1].opval));
 			  token_getmad((yyvsp[-3].tkval),(yyval.opval),'o');
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'(');
@@ -1345,7 +1354,7 @@ case 2:
     break;
 
   case 184:
-#line 1091 "madly.y"
+#line 1101 "madly.y"
     { (yyval.opval) = pmruntime((yyvsp[-3].opval), (yyvsp[-1].opval), 1);
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1353,7 +1362,7 @@ case 2:
     break;
 
   case 187:
-#line 1101 "madly.y"
+#line 1111 "madly.y"
     { (yyval.opval) = my_attrs((yyvsp[-1].opval),(yyvsp[0].opval));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'d');
 			  append_madprops((yyvsp[0].opval)->op_madprop, (yyval.opval), 'a');
@@ -1362,14 +1371,14 @@ case 2:
     break;
 
   case 188:
-#line 1107 "madly.y"
+#line 1117 "madly.y"
     { (yyval.opval) = localize((yyvsp[0].opval),((yyvsp[-1].tkval))->tk_lval.ival);
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'d');
 			;}
     break;
 
   case 189:
-#line 1114 "madly.y"
+#line 1124 "madly.y"
     { (yyval.opval) = sawparens((yyvsp[-1].opval));
 			  token_getmad((yyvsp[-2].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1377,7 +1386,7 @@ case 2:
     break;
 
   case 190:
-#line 1119 "madly.y"
+#line 1129 "madly.y"
     { (yyval.opval) = sawparens(newNULLLIST());
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'(');
 			  token_getmad((yyvsp[0].tkval),(yyval.opval),')');
@@ -1385,42 +1394,42 @@ case 2:
     break;
 
   case 191:
-#line 1124 "madly.y"
+#line 1134 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 192:
-#line 1126 "madly.y"
+#line 1136 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 193:
-#line 1128 "madly.y"
+#line 1138 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 194:
-#line 1133 "madly.y"
+#line 1143 "madly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 195:
-#line 1135 "madly.y"
+#line 1145 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 196:
-#line 1139 "madly.y"
+#line 1149 "madly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 197:
-#line 1141 "madly.y"
+#line 1151 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 198:
-#line 1143 "madly.y"
+#line 1153 "madly.y"
     { OP* op = newNULLLIST();
 			  token_getmad((yyvsp[0].tkval),op,',');
 			  (yyval.opval) = append_elem(OP_LIST, (yyvsp[-1].opval), op);
@@ -1428,69 +1437,69 @@ case 2:
     break;
 
   case 199:
-#line 1152 "madly.y"
+#line 1162 "madly.y"
     { PL_in_my = 0; (yyval.opval) = my((yyvsp[0].opval)); ;}
     break;
 
   case 200:
-#line 1156 "madly.y"
+#line 1166 "madly.y"
     { (yyval.opval) = newCVREF(((yyvsp[-1].tkval))->tk_lval.ival,(yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'&');
 			;}
     break;
 
   case 201:
-#line 1162 "madly.y"
+#line 1172 "madly.y"
     { (yyval.opval) = newSVREF((yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'$');
 			;}
     break;
 
   case 202:
-#line 1168 "madly.y"
+#line 1178 "madly.y"
     { (yyval.opval) = newAVREF((yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'@');
 			;}
     break;
 
   case 203:
-#line 1174 "madly.y"
+#line 1184 "madly.y"
     { (yyval.opval) = newHVREF((yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'%');
 			;}
     break;
 
   case 204:
-#line 1180 "madly.y"
+#line 1190 "madly.y"
     { (yyval.opval) = newAVREF((yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'l');
 			;}
     break;
 
   case 205:
-#line 1186 "madly.y"
+#line 1196 "madly.y"
     { (yyval.opval) = newGVREF(0,(yyvsp[0].opval));
 			  token_getmad((yyvsp[-1].tkval),(yyval.opval),'*');
 			;}
     break;
 
   case 206:
-#line 1193 "madly.y"
+#line 1203 "madly.y"
     { (yyval.opval) = scalar((yyvsp[0].opval)); ;}
     break;
 
   case 207:
-#line 1195 "madly.y"
+#line 1205 "madly.y"
     { (yyval.opval) = scalar((yyvsp[0].opval)); ;}
     break;
 
   case 208:
-#line 1197 "madly.y"
+#line 1207 "madly.y"
     { (yyval.opval) = scope((yyvsp[0].opval)); ;}
     break;
 
   case 209:
-#line 1200 "madly.y"
+#line 1210 "madly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
diff --git a/madly.tab b/madly.tab
index be4853e..2718be6 100644
--- a/madly.tab
+++ b/madly.tab
@@ -171,21 +171,21 @@ static const unsigned short int yyrline[] =
      255,   266,   269,   275,   276,   283,   296,   308,   318,   328,
      337,   362,   370,   380,   386,   387,   392,   395,   399,   404,
      408,   412,   418,   421,   425,   427,   429,   431,   433,   435,
-     439,   445,   453,   454,   458,   465,   480,   484,   488,   492,
-     501,   502,   507,   508,   512,   519,   523,   530,   531,   536,
-     544,   543,   555,   559,   563,   567,   571,   576,   582,   586,
-     591,   598,   607,   613,   619,   627,   631,   638,   637,   647,
-     648,   652,   661,   666,   674,   681,   688,   698,   707,   714,
-     723,   730,   736,   743,   753,   757,   761,   767,   771,   775,
-     779,   783,   787,   791,   800,   804,   808,   812,   822,   826,
-     830,   834,   838,   843,   848,   853,   862,   867,   872,   878,
-     884,   894,   898,   902,   914,   927,   935,   947,   948,   949,
-     950,   951,   956,   960,   962,   966,   971,   976,   978,   980,
-     982,   984,   986,   988,   997,  1008,  1010,  1012,  1017,  1028,
-    1033,  1038,  1042,  1046,  1050,  1054,  1058,  1060,  1062,  1065,
-    1069,  1075,  1078,  1084,  1090,  1095,  1096,  1100,  1106,  1113,
-    1118,  1123,  1125,  1127,  1132,  1134,  1139,  1140,  1142,  1151,
-    1155,  1161,  1167,  1173,  1179,  1185,  1192,  1194,  1196,  1199
+     439,   445,   454,   455,   459,   467,   483,   489,   494,   499,
+     508,   509,   514,   515,   519,   526,   530,   537,   538,   543,
+     551,   550,   563,   567,   571,   575,   579,   584,   590,   594,
+     599,   606,   615,   621,   627,   635,   639,   646,   645,   656,
+     657,   661,   670,   675,   683,   690,   697,   707,   716,   723,
+     732,   739,   745,   752,   762,   766,   770,   776,   780,   784,
+     788,   792,   796,   800,   809,   813,   817,   821,   831,   835,
+     839,   843,   847,   852,   857,   862,   871,   876,   881,   887,
+     893,   904,   908,   912,   924,   937,   945,   957,   958,   959,
+     960,   961,   966,   970,   972,   976,   981,   986,   988,   990,
+     992,   994,   996,   998,  1007,  1018,  1020,  1022,  1027,  1038,
+    1043,  1048,  1052,  1056,  1060,  1064,  1068,  1070,  1072,  1075,
+    1079,  1085,  1088,  1094,  1100,  1105,  1106,  1110,  1116,  1123,
+    1128,  1133,  1135,  1137,  1142,  1144,  1149,  1150,  1152,  1161,
+    1165,  1171,  1177,  1183,  1189,  1195,  1202,  1204,  1206,  1209
 };
 #endif
 
diff --git a/madly.y b/madly.y
index f10bf35..0643ff5 100644
--- a/madly.y
+++ b/madly.y
@@ -443,7 +443,8 @@ peg	:	PEG
 	;
 
 format	:	FORMAT startformsub formname block
-			{ $$ = newFORM($2, $3, $4);
+			{ SvREFCNT_inc(PL_compcv);
+			  $$ = newFORM($2, $3, $4);
 			  prepend_madprops($1->tk_mad, $$, 'F');
 			  $1->tk_mad = 0;
 			  token_free($1);
@@ -456,14 +457,16 @@ formname:	WORD		{ $$ = $1; }
 
 /* Unimplemented "my sub foo { }" */
 mysubrout:	MYSUB startsub subname proto subattrlist subbody
-			{ $$ = newMYSUB($2, $3, $4, $5, $6);
+			{ SvREFCNT_inc(PL_compcv);
+			  $$ = newMYSUB($2, $3, $4, $5, $6);
 			  token_getmad($1,$$,'d');
 			}
 	;
 
 /* Subroutine definition */
 subrout	:	SUB startsub subname proto subattrlist subbody
-			{ OP* o = newSVOP(OP_ANONCODE, 0,
+			{ SvREFCNT_inc(PL_compcv);
+			  OP* o = newSVOP(OP_ANONCODE, 0,
 			    (SV*)newATTRSUB($2, $3, $4, $5, $6));
 			  $$ = newOP(OP_NULL,0);
 			  op_getmad(o,$$,'&');
@@ -477,15 +480,19 @@ subrout	:	SUB startsub subname proto subattrlist subbody
 	;
 
 startsub:	/* NULL */	/* start a regular subroutine scope */
-			{ $$ = start_subparse(FALSE, 0); }
+			{ $$ = start_subparse(FALSE, 0);
+			    SAVEFREESV(PL_compcv); }
+
 	;
 
 startanonsub:	/* NULL */	/* start an anonymous subroutine scope */
-			{ $$ = start_subparse(FALSE, CVf_ANON); }
+			{ $$ = start_subparse(FALSE, CVf_ANON);
+			    SAVEFREESV(PL_compcv); }
 	;
 
 startformsub:	/* NULL */	/* start a format subroutine scope */
-			{ $$ = start_subparse(TRUE, 0); }
+			{ $$ = start_subparse(TRUE, 0);
+			    SAVEFREESV(PL_compcv); }
 	;
 
 /* Name of a subroutine - must be a bareword, could be special */
@@ -543,7 +550,8 @@ package :	PACKAGE WORD ';'
 use	:	USE startsub
 			{ CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
 		    WORD WORD listexpr ';'
-			{ $$ = utilize(($1)->tk_lval.ival, $2, $4, $5, $6);
+			{ SvREFCNT_inc(PL_compcv);
+			  $$ = utilize(($1)->tk_lval.ival, $2, $4, $5, $6);
 			  token_getmad($1,$$,'o');
 			  token_getmad($7,$$,';');
 			  if (PL_rsfp_filters && AvFILLp(PL_rsfp_filters) >= 0)
@@ -635,7 +643,8 @@ listop	:	LSTOP indirob argexpr          /* print $fh @args */
 			  token_getmad($4,$$,')');
 			}
 	|	LSTOPSUB startanonsub block          /* map { foo } ... */
-			{ $3 = newANONATTRSUB($2, 0, Nullop, $3); }
+			{ SvREFCNT_inc(PL_compcv);
+			  $3 = newANONATTRSUB($2, 0, Nullop, $3); }
 		    listexpr		%prec LSTOP  /* ... @bar */
 			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				 append_elem(OP_LIST,
@@ -882,7 +891,8 @@ anonymous:	'[' expr ']'
 			  token_getmad($3,$$,'}');
 			}
 	|	ANONSUB startanonsub proto subattrlist block	%prec '('
-			{ $$ = newANONATTRSUB($2, $3, $4, $5);
+			{ SvREFCNT_inc(PL_compcv);
+			  $$ = newANONATTRSUB($2, $3, $4, $5);
 			  token_getmad($1,$$,'o');
 			  op_getmad($3,$$,'s');
 			  op_getmad($4,$$,'a');
diff --git a/perly.act b/perly.act
index 9e2acc6..e2b00cd 100644
--- a/perly.act
+++ b/perly.act
@@ -324,46 +324,52 @@ case 2:
 
   case 59:
 #line 344 "perly.y"
-    { newFORM((yyvsp[-2].ival), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
+    { SvREFCNT_inc(PL_compcv);
+			  newFORM((yyvsp[-2].ival), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 60:
-#line 347 "perly.y"
+#line 348 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 61:
-#line 348 "perly.y"
+#line 349 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 62:
-#line 353 "perly.y"
-    { newMYSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
+#line 354 "perly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  newMYSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 63:
-#line 358 "perly.y"
-    { newATTRSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
+#line 360 "perly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  newATTRSUB((yyvsp[-4].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 64:
-#line 362 "perly.y"
-    { (yyval.ival) = start_subparse(FALSE, 0); ;}
+#line 365 "perly.y"
+    { (yyval.ival) = start_subparse(FALSE, 0);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 65:
-#line 366 "perly.y"
-    { (yyval.ival) = start_subparse(FALSE, CVf_ANON); ;}
+#line 370 "perly.y"
+    { (yyval.ival) = start_subparse(FALSE, CVf_ANON);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 66:
-#line 370 "perly.y"
-    { (yyval.ival) = start_subparse(TRUE, 0); ;}
+#line 375 "perly.y"
+    { (yyval.ival) = start_subparse(TRUE, 0);
+			    SAVEFREESV(PL_compcv); ;}
     break;
 
   case 67:
-#line 374 "perly.y"
+#line 380 "perly.y"
     { const char *const name = SvPV_nolen_const(((SVOP*)(yyvsp[0].opval))->op_sv);
 			  if (strEQ(name, "BEGIN") || strEQ(name, "END")
 			      || strEQ(name, "INIT") || strEQ(name, "CHECK"))
@@ -372,99 +378,100 @@ case 2:
     break;
 
   case 68:
-#line 383 "perly.y"
+#line 389 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 70:
-#line 389 "perly.y"
+#line 395 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 71:
-#line 391 "perly.y"
+#line 397 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 72:
-#line 393 "perly.y"
+#line 399 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 73:
-#line 398 "perly.y"
+#line 404 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 74:
-#line 400 "perly.y"
+#line 406 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 75:
-#line 404 "perly.y"
+#line 410 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 76:
-#line 405 "perly.y"
+#line 411 "perly.y"
     { (yyval.opval) = Nullop; PL_expect = XSTATE; ;}
     break;
 
   case 77:
-#line 409 "perly.y"
+#line 415 "perly.y"
     { package((yyvsp[-1].opval)); ;}
     break;
 
   case 78:
-#line 413 "perly.y"
+#line 419 "perly.y"
     { CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ ;}
     break;
 
   case 79:
-#line 415 "perly.y"
-    { utilize((yyvsp[-6].ival), (yyvsp[-5].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval)); ;}
+#line 421 "perly.y"
+    { SvREFCNT_inc(PL_compcv);
+			   utilize((yyvsp[-6].ival), (yyvsp[-5].ival), (yyvsp[-3].opval), (yyvsp[-2].opval), (yyvsp[-1].opval)); ;}
     break;
 
   case 80:
-#line 420 "perly.y"
+#line 427 "perly.y"
     { (yyval.opval) = newLOGOP(OP_AND, 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 81:
-#line 422 "perly.y"
+#line 429 "perly.y"
     { (yyval.opval) = newLOGOP((yyvsp[-1].ival), 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 82:
-#line 424 "perly.y"
+#line 431 "perly.y"
     { (yyval.opval) = newLOGOP(OP_DOR, 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 84:
-#line 430 "perly.y"
+#line 437 "perly.y"
     { (yyval.opval) = (yyvsp[-1].opval); ;}
     break;
 
   case 85:
-#line 432 "perly.y"
+#line 439 "perly.y"
     { (yyval.opval) = append_elem(OP_LIST, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 87:
-#line 438 "perly.y"
+#line 445 "perly.y"
     { (yyval.opval) = convert((yyvsp[-2].ival), OPf_STACKED,
 				prepend_elem(OP_LIST, newGVREF((yyvsp[-2].ival),(yyvsp[-1].opval)), (yyvsp[0].opval)) ); ;}
     break;
 
   case 88:
-#line 441 "perly.y"
+#line 448 "perly.y"
     { (yyval.opval) = convert((yyvsp[-4].ival), OPf_STACKED,
 				prepend_elem(OP_LIST, newGVREF((yyvsp[-4].ival),(yyvsp[-2].opval)), (yyvsp[-1].opval)) ); ;}
     break;
 
   case 89:
-#line 444 "perly.y"
+#line 451 "perly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, scalar((yyvsp[-5].opval)), (yyvsp[-1].opval)),
@@ -472,14 +479,14 @@ case 2:
     break;
 
   case 90:
-#line 449 "perly.y"
+#line 456 "perly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST, scalar((yyvsp[-2].opval)),
 				    newUNOP(OP_METHOD, 0, (yyvsp[0].opval)))); ;}
     break;
 
   case 91:
-#line 453 "perly.y"
+#line 460 "perly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, (yyvsp[-1].opval), (yyvsp[0].opval)),
@@ -487,7 +494,7 @@ case 2:
     break;
 
   case 92:
-#line 458 "perly.y"
+#line 465 "perly.y"
     { (yyval.opval) = convert(OP_ENTERSUB, OPf_STACKED,
 				append_elem(OP_LIST,
 				    prepend_elem(OP_LIST, (yyvsp[-3].opval), (yyvsp[-1].opval)),
@@ -495,60 +502,61 @@ case 2:
     break;
 
   case 93:
-#line 463 "perly.y"
+#line 470 "perly.y"
     { (yyval.opval) = convert((yyvsp[-1].ival), 0, (yyvsp[0].opval)); ;}
     break;
 
   case 94:
-#line 465 "perly.y"
+#line 472 "perly.y"
     { (yyval.opval) = convert((yyvsp[-3].ival), 0, (yyvsp[-1].opval)); ;}
     break;
 
   case 95:
-#line 467 "perly.y"
-    { (yyvsp[0].opval) = newANONATTRSUB((yyvsp[-1].ival), 0, Nullop, (yyvsp[0].opval)); ;}
+#line 474 "perly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyvsp[0].opval) = newANONATTRSUB((yyvsp[-1].ival), 0, Nullop, (yyvsp[0].opval)); ;}
     break;
 
   case 96:
-#line 469 "perly.y"
+#line 477 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				 append_elem(OP_LIST,
 				   prepend_elem(OP_LIST, (yyvsp[-2].opval), (yyvsp[0].opval)), (yyvsp[-4].opval))); ;}
     break;
 
   case 99:
-#line 483 "perly.y"
+#line 491 "perly.y"
     { (yyval.opval) = newBINOP(OP_GELEM, 0, (yyvsp[-4].opval), scalar((yyvsp[-2].opval)));
 			    PL_expect = XOPERATOR; ;}
     break;
 
   case 100:
-#line 486 "perly.y"
+#line 494 "perly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0, oopsAV((yyvsp[-3].opval)), scalar((yyvsp[-1].opval))); ;}
     break;
 
   case 101:
-#line 488 "perly.y"
+#line 496 "perly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0,
 					ref(newAVREF((yyvsp[-4].opval)),OP_RV2AV),
 					scalar((yyvsp[-1].opval)));;}
     break;
 
   case 102:
-#line 492 "perly.y"
+#line 500 "perly.y"
     { (yyval.opval) = newBINOP(OP_AELEM, 0,
 					ref(newAVREF((yyvsp[-3].opval)),OP_RV2AV),
 					scalar((yyvsp[-1].opval)));;}
     break;
 
   case 103:
-#line 496 "perly.y"
+#line 504 "perly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0, oopsHV((yyvsp[-4].opval)), jmaybe((yyvsp[-2].opval)));
 			    PL_expect = XOPERATOR; ;}
     break;
 
   case 104:
-#line 499 "perly.y"
+#line 507 "perly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0,
 					ref(newHVREF((yyvsp[-5].opval)),OP_RV2HV),
 					jmaybe((yyvsp[-2].opval)));
@@ -556,7 +564,7 @@ case 2:
     break;
 
   case 105:
-#line 504 "perly.y"
+#line 512 "perly.y"
     { (yyval.opval) = newBINOP(OP_HELEM, 0,
 					ref(newHVREF((yyvsp[-4].opval)),OP_RV2HV),
 					jmaybe((yyvsp[-2].opval)));
@@ -564,194 +572,195 @@ case 2:
     break;
 
   case 106:
-#line 509 "perly.y"
+#line 517 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   newCVREF(0, scalar((yyvsp[-3].opval)))); ;}
     break;
 
   case 107:
-#line 512 "perly.y"
+#line 520 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   append_elem(OP_LIST, (yyvsp[-1].opval),
 				       newCVREF(0, scalar((yyvsp[-4].opval))))); ;}
     break;
 
   case 108:
-#line 517 "perly.y"
+#line 525 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   append_elem(OP_LIST, (yyvsp[-1].opval),
 					       newCVREF(0, scalar((yyvsp[-3].opval))))); ;}
     break;
 
   case 109:
-#line 521 "perly.y"
+#line 529 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				   newCVREF(0, scalar((yyvsp[-2].opval)))); ;}
     break;
 
   case 110:
-#line 524 "perly.y"
+#line 532 "perly.y"
     { (yyval.opval) = newSLICEOP(0, (yyvsp[-1].opval), (yyvsp[-4].opval)); ;}
     break;
 
   case 111:
-#line 526 "perly.y"
+#line 534 "perly.y"
     { (yyval.opval) = newSLICEOP(0, (yyvsp[-1].opval), Nullop); ;}
     break;
 
   case 112:
-#line 531 "perly.y"
+#line 539 "perly.y"
     { (yyval.opval) = newASSIGNOP(OPf_STACKED, (yyvsp[-2].opval), (yyvsp[-1].ival), (yyvsp[0].opval)); ;}
     break;
 
   case 113:
-#line 533 "perly.y"
+#line 541 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 114:
-#line 535 "perly.y"
+#line 543 "perly.y"
     {   if ((yyvsp[-1].ival) != OP_REPEAT)
 				scalar((yyvsp[-2].opval));
 			    (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, (yyvsp[-2].opval), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 115:
-#line 539 "perly.y"
+#line 547 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 116:
-#line 541 "perly.y"
+#line 549 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 117:
-#line 543 "perly.y"
+#line 551 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 118:
-#line 545 "perly.y"
+#line 553 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 119:
-#line 547 "perly.y"
+#line 555 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 120:
-#line 549 "perly.y"
+#line 557 "perly.y"
     { (yyval.opval) = newBINOP((yyvsp[-1].ival), 0, scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval))); ;}
     break;
 
   case 121:
-#line 551 "perly.y"
+#line 559 "perly.y"
     { (yyval.opval) = newRANGE((yyvsp[-1].ival), scalar((yyvsp[-2].opval)), scalar((yyvsp[0].opval)));;}
     break;
 
   case 122:
-#line 553 "perly.y"
+#line 561 "perly.y"
     { (yyval.opval) = newLOGOP(OP_AND, 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 123:
-#line 555 "perly.y"
+#line 563 "perly.y"
     { (yyval.opval) = newLOGOP(OP_OR, 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 124:
-#line 557 "perly.y"
+#line 565 "perly.y"
     { (yyval.opval) = newLOGOP(OP_DOR, 0, (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 125:
-#line 559 "perly.y"
+#line 567 "perly.y"
     { (yyval.opval) = bind_match((yyvsp[-1].ival), (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 126:
-#line 564 "perly.y"
+#line 572 "perly.y"
     { (yyval.opval) = newUNOP(OP_NEGATE, 0, scalar((yyvsp[0].opval))); ;}
     break;
 
   case 127:
-#line 566 "perly.y"
+#line 574 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 128:
-#line 568 "perly.y"
+#line 576 "perly.y"
     { (yyval.opval) = newUNOP(OP_NOT, 0, scalar((yyvsp[0].opval))); ;}
     break;
 
   case 129:
-#line 570 "perly.y"
+#line 578 "perly.y"
     { (yyval.opval) = newUNOP(OP_COMPLEMENT, 0, scalar((yyvsp[0].opval)));;}
     break;
 
   case 130:
-#line 572 "perly.y"
+#line 580 "perly.y"
     { (yyval.opval) = newUNOP(OP_POSTINC, 0,
 					mod(scalar((yyvsp[-1].opval)), OP_POSTINC)); ;}
     break;
 
   case 131:
-#line 575 "perly.y"
+#line 583 "perly.y"
     { (yyval.opval) = newUNOP(OP_POSTDEC, 0,
 					mod(scalar((yyvsp[-1].opval)), OP_POSTDEC)); ;}
     break;
 
   case 132:
-#line 578 "perly.y"
+#line 586 "perly.y"
     { (yyval.opval) = newUNOP(OP_PREINC, 0,
 					mod(scalar((yyvsp[0].opval)), OP_PREINC)); ;}
     break;
 
   case 133:
-#line 581 "perly.y"
+#line 589 "perly.y"
     { (yyval.opval) = newUNOP(OP_PREDEC, 0,
 					mod(scalar((yyvsp[0].opval)), OP_PREDEC)); ;}
     break;
 
   case 134:
-#line 588 "perly.y"
+#line 596 "perly.y"
     { (yyval.opval) = newANONLIST((yyvsp[-1].opval)); ;}
     break;
 
   case 135:
-#line 590 "perly.y"
+#line 598 "perly.y"
     { (yyval.opval) = newANONLIST(Nullop); ;}
     break;
 
   case 136:
-#line 592 "perly.y"
+#line 600 "perly.y"
     { (yyval.opval) = newANONHASH((yyvsp[-2].opval)); ;}
     break;
 
   case 137:
-#line 594 "perly.y"
+#line 602 "perly.y"
     { (yyval.opval) = newANONHASH(Nullop); ;}
     break;
 
   case 138:
-#line 596 "perly.y"
-    { (yyval.opval) = newANONATTRSUB((yyvsp[-3].ival), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
+#line 604 "perly.y"
+    { SvREFCNT_inc(PL_compcv);
+			  (yyval.opval) = newANONATTRSUB((yyvsp[-3].ival), (yyvsp[-2].opval), (yyvsp[-1].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 139:
-#line 602 "perly.y"
+#line 611 "perly.y"
     { (yyval.opval) = dofile((yyvsp[0].opval), (yyvsp[-1].ival)); ;}
     break;
 
   case 140:
-#line 604 "perly.y"
+#line 613 "perly.y"
     { (yyval.opval) = newUNOP(OP_NULL, OPf_SPECIAL, scope((yyvsp[0].opval))); ;}
     break;
 
   case 141:
-#line 606 "perly.y"
+#line 615 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB,
 			    OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
@@ -762,7 +771,7 @@ case 2:
     break;
 
   case 142:
-#line 614 "perly.y"
+#line 623 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB,
 			    OPf_SPECIAL|OPf_STACKED,
 			    append_elem(OP_LIST,
@@ -774,14 +783,14 @@ case 2:
     break;
 
   case 143:
-#line 623 "perly.y"
+#line 632 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
 				scalar(newCVREF(0,scalar((yyvsp[-2].opval)))), Nullop)); dep();;}
     break;
 
   case 144:
-#line 627 "perly.y"
+#line 636 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_SPECIAL|OPf_STACKED,
 			    prepend_elem(OP_LIST,
 				(yyvsp[-1].opval),
@@ -789,67 +798,67 @@ case 2:
     break;
 
   case 149:
-#line 639 "perly.y"
+#line 648 "perly.y"
     { (yyval.opval) = newCONDOP(0, (yyvsp[-4].opval), (yyvsp[-2].opval), (yyvsp[0].opval)); ;}
     break;
 
   case 150:
-#line 641 "perly.y"
+#line 650 "perly.y"
     { (yyval.opval) = newUNOP(OP_REFGEN, 0, mod((yyvsp[0].opval),OP_REFGEN)); ;}
     break;
 
   case 151:
-#line 643 "perly.y"
+#line 652 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 152:
-#line 645 "perly.y"
+#line 654 "perly.y"
     { (yyval.opval) = localize((yyvsp[0].opval),(yyvsp[-1].ival)); ;}
     break;
 
   case 153:
-#line 647 "perly.y"
+#line 656 "perly.y"
     { (yyval.opval) = sawparens((yyvsp[-1].opval)); ;}
     break;
 
   case 154:
-#line 649 "perly.y"
+#line 658 "perly.y"
     { (yyval.opval) = sawparens(newNULLLIST()); ;}
     break;
 
   case 155:
-#line 651 "perly.y"
+#line 660 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 156:
-#line 653 "perly.y"
+#line 662 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 157:
-#line 655 "perly.y"
+#line 664 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 158:
-#line 657 "perly.y"
+#line 666 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 159:
-#line 659 "perly.y"
+#line 668 "perly.y"
     { (yyval.opval) = newUNOP(OP_AV2ARYLEN, 0, ref((yyvsp[0].opval), OP_AV2ARYLEN));;}
     break;
 
   case 160:
-#line 661 "perly.y"
+#line 670 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 161:
-#line 663 "perly.y"
+#line 672 "perly.y"
     { (yyval.opval) = prepend_elem(OP_ASLICE,
 				newOP(OP_PUSHMARK, 0),
 				    newLISTOP(OP_ASLICE, 0,
@@ -858,7 +867,7 @@ case 2:
     break;
 
   case 162:
-#line 669 "perly.y"
+#line 678 "perly.y"
     { (yyval.opval) = prepend_elem(OP_HSLICE,
 				newOP(OP_PUSHMARK, 0),
 				    newLISTOP(OP_HSLICE, 0,
@@ -868,223 +877,223 @@ case 2:
     break;
 
   case 163:
-#line 676 "perly.y"
+#line 685 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 164:
-#line 678 "perly.y"
+#line 687 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, 0, scalar((yyvsp[0].opval))); ;}
     break;
 
   case 165:
-#line 680 "perly.y"
+#line 689 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED, scalar((yyvsp[-2].opval))); ;}
     break;
 
   case 166:
-#line 682 "perly.y"
+#line 691 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 			    append_elem(OP_LIST, (yyvsp[-1].opval), scalar((yyvsp[-3].opval)))); ;}
     break;
 
   case 167:
-#line 685 "perly.y"
+#line 694 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 			    append_elem(OP_LIST, (yyvsp[0].opval), scalar((yyvsp[-1].opval)))); ;}
     break;
 
   case 168:
-#line 688 "perly.y"
+#line 697 "perly.y"
     { (yyval.opval) = newOP((yyvsp[0].ival), OPf_SPECIAL);
 			    PL_hints |= HINT_BLOCK_SCOPE; ;}
     break;
 
   case 169:
-#line 691 "perly.y"
+#line 700 "perly.y"
     { (yyval.opval) = newLOOPEX((yyvsp[-1].ival),(yyvsp[0].opval)); ;}
     break;
 
   case 170:
-#line 693 "perly.y"
+#line 702 "perly.y"
     { (yyval.opval) = newUNOP(OP_NOT, 0, scalar((yyvsp[0].opval))); ;}
     break;
 
   case 171:
-#line 695 "perly.y"
+#line 704 "perly.y"
     { (yyval.opval) = newOP((yyvsp[0].ival), 0); ;}
     break;
 
   case 172:
-#line 697 "perly.y"
+#line 706 "perly.y"
     { (yyval.opval) = newUNOP((yyvsp[-1].ival), 0, (yyvsp[0].opval)); ;}
     break;
 
   case 173:
-#line 699 "perly.y"
+#line 708 "perly.y"
     { (yyval.opval) = newUNOP((yyvsp[-1].ival), 0, (yyvsp[0].opval)); ;}
     break;
 
   case 174:
-#line 701 "perly.y"
+#line 710 "perly.y"
     { (yyval.opval) = newOP(OP_REQUIRE, (yyvsp[0].ival) ? OPf_SPECIAL : 0); ;}
     break;
 
   case 175:
-#line 703 "perly.y"
+#line 712 "perly.y"
     { (yyval.opval) = newUNOP(OP_REQUIRE, (yyvsp[-1].ival) ? OPf_SPECIAL : 0, (yyvsp[0].opval)); ;}
     break;
 
   case 176:
-#line 705 "perly.y"
+#line 714 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 			    append_elem(OP_LIST, (yyvsp[0].opval), scalar((yyvsp[-1].opval)))); ;}
     break;
 
   case 177:
-#line 708 "perly.y"
+#line 717 "perly.y"
     { (yyval.opval) = newOP((yyvsp[0].ival), 0); ;}
     break;
 
   case 178:
-#line 710 "perly.y"
+#line 719 "perly.y"
     { (yyval.opval) = newOP((yyvsp[-2].ival), 0); ;}
     break;
 
   case 179:
-#line 712 "perly.y"
+#line 721 "perly.y"
     { (yyval.opval) = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				scalar((yyvsp[0].opval))); ;}
     break;
 
   case 180:
-#line 715 "perly.y"
+#line 724 "perly.y"
     { (yyval.opval) = (yyvsp[-2].ival) == OP_NOT ? newUNOP((yyvsp[-2].ival), 0, newSVOP(OP_CONST, 0, newSViv(0)))
 					    : newOP((yyvsp[-2].ival), OPf_SPECIAL); ;}
     break;
 
   case 181:
-#line 718 "perly.y"
+#line 727 "perly.y"
     { (yyval.opval) = newUNOP((yyvsp[-3].ival), 0, (yyvsp[-1].opval)); ;}
     break;
 
   case 182:
-#line 720 "perly.y"
+#line 729 "perly.y"
     { (yyval.opval) = pmruntime((yyvsp[-3].opval), (yyvsp[-1].opval), 1); ;}
     break;
 
   case 185:
-#line 727 "perly.y"
+#line 736 "perly.y"
     { (yyval.opval) = my_attrs((yyvsp[-1].opval),(yyvsp[0].opval)); ;}
     break;
 
   case 186:
-#line 729 "perly.y"
+#line 738 "perly.y"
     { (yyval.opval) = localize((yyvsp[0].opval),(yyvsp[-1].ival)); ;}
     break;
 
   case 187:
-#line 734 "perly.y"
+#line 743 "perly.y"
     { (yyval.opval) = sawparens((yyvsp[-1].opval)); ;}
     break;
 
   case 188:
-#line 736 "perly.y"
+#line 745 "perly.y"
     { (yyval.opval) = sawparens(newNULLLIST()); ;}
     break;
 
   case 189:
-#line 738 "perly.y"
+#line 747 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 190:
-#line 740 "perly.y"
+#line 749 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 191:
-#line 742 "perly.y"
+#line 751 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 192:
-#line 747 "perly.y"
+#line 756 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 193:
-#line 749 "perly.y"
+#line 758 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 194:
-#line 753 "perly.y"
+#line 762 "perly.y"
     { (yyval.opval) = Nullop; ;}
     break;
 
   case 195:
-#line 755 "perly.y"
+#line 764 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
   case 196:
-#line 757 "perly.y"
+#line 766 "perly.y"
     { (yyval.opval) = (yyvsp[-1].opval); ;}
     break;
 
   case 197:
-#line 763 "perly.y"
+#line 772 "perly.y"
     { PL_in_my = 0; (yyval.opval) = my((yyvsp[0].opval)); ;}
     break;
 
   case 198:
-#line 767 "perly.y"
+#line 776 "perly.y"
     { (yyval.opval) = newCVREF((yyvsp[-1].ival),(yyvsp[0].opval)); ;}
     break;
 
   case 199:
-#line 771 "perly.y"
+#line 780 "perly.y"
     { (yyval.opval) = newSVREF((yyvsp[0].opval)); ;}
     break;
 
   case 200:
-#line 775 "perly.y"
+#line 784 "perly.y"
     { (yyval.opval) = newAVREF((yyvsp[0].opval)); ;}
     break;
 
   case 201:
-#line 779 "perly.y"
+#line 788 "perly.y"
     { (yyval.opval) = newHVREF((yyvsp[0].opval)); ;}
     break;
 
   case 202:
-#line 783 "perly.y"
+#line 792 "perly.y"
     { (yyval.opval) = newAVREF((yyvsp[0].opval)); ;}
     break;
 
   case 203:
-#line 787 "perly.y"
+#line 796 "perly.y"
     { (yyval.opval) = newGVREF(0,(yyvsp[0].opval)); ;}
     break;
 
   case 204:
-#line 792 "perly.y"
+#line 801 "perly.y"
     { (yyval.opval) = scalar((yyvsp[0].opval)); ;}
     break;
 
   case 205:
-#line 794 "perly.y"
+#line 803 "perly.y"
     { (yyval.opval) = scalar((yyvsp[0].opval));  ;}
     break;
 
   case 206:
-#line 796 "perly.y"
+#line 805 "perly.y"
     { (yyval.opval) = scope((yyvsp[0].opval)); ;}
     break;
 
   case 207:
-#line 799 "perly.y"
+#line 808 "perly.y"
     { (yyval.opval) = (yyvsp[0].opval); ;}
     break;
 
diff --git a/perly.tab b/perly.tab
index 5c7e678..18c1624 100644
--- a/perly.tab
+++ b/perly.tab
@@ -171,21 +171,21 @@ static const unsigned short int yyrline[] =
      212,   219,   222,   228,   229,   234,   240,   246,   249,   253,
      256,   273,   280,   290,   296,   297,   302,   303,   307,   312,
      316,   320,   326,   327,   331,   333,   335,   337,   339,   343,
-     347,   348,   352,   357,   362,   366,   370,   374,   383,   384,
-     389,   390,   392,   397,   399,   404,   405,   408,   413,   412,
-     419,   421,   423,   425,   429,   431,   433,   437,   440,   443,
-     448,   452,   457,   462,   464,   467,   466,   475,   476,   480,
-     485,   487,   491,   495,   498,   503,   508,   511,   516,   520,
-     523,   525,   530,   532,   534,   538,   540,   542,   544,   546,
-     548,   550,   552,   554,   556,   558,   563,   565,   567,   569,
-     571,   574,   577,   580,   587,   589,   591,   593,   595,   601,
-     603,   605,   613,   622,   626,   634,   635,   636,   637,   638,
-     640,   642,   644,   646,   648,   650,   652,   654,   656,   658,
-     660,   662,   668,   675,   677,   679,   681,   684,   687,   690,
-     692,   694,   696,   698,   700,   702,   704,   707,   709,   711,
-     714,   717,   719,   721,   722,   726,   728,   733,   735,   737,
-     739,   741,   746,   748,   753,   754,   756,   762,   766,   770,
-     774,   778,   782,   786,   791,   793,   795,   798
+     348,   349,   353,   359,   365,   370,   375,   380,   389,   390,
+     395,   396,   398,   403,   405,   410,   411,   414,   419,   418,
+     426,   428,   430,   432,   436,   438,   440,   444,   447,   450,
+     455,   459,   464,   469,   471,   474,   473,   483,   484,   488,
+     493,   495,   499,   503,   506,   511,   516,   519,   524,   528,
+     531,   533,   538,   540,   542,   546,   548,   550,   552,   554,
+     556,   558,   560,   562,   564,   566,   571,   573,   575,   577,
+     579,   582,   585,   588,   595,   597,   599,   601,   603,   610,
+     612,   614,   622,   631,   635,   643,   644,   645,   646,   647,
+     649,   651,   653,   655,   657,   659,   661,   663,   665,   667,
+     669,   671,   677,   684,   686,   688,   690,   693,   696,   699,
+     701,   703,   705,   707,   709,   711,   713,   716,   718,   720,
+     723,   726,   728,   730,   731,   735,   737,   742,   744,   746,
+     748,   750,   755,   757,   762,   763,   765,   771,   775,   779,
+     783,   787,   791,   795,   800,   802,   804,   807
 };
 #endif
 
diff --git a/perly.y b/perly.y
index cbd2f7a..0ae38d5 100644
--- a/perly.y
+++ b/perly.y
@@ -341,7 +341,8 @@ decl	:	format
 	;
 
 format	:	FORMAT startformsub formname block
-			{ newFORM($2, $3, $4); }
+			{ SvREFCNT_inc(PL_compcv);
+			  newFORM($2, $3, $4); }
 	;
 
 formname:	WORD		{ $$ = $1; }
@@ -350,24 +351,29 @@ formname:	WORD		{ $$ = $1; }
 
 /* Unimplemented "my sub foo { }" */
 mysubrout:	MYSUB startsub subname proto subattrlist subbody
-			{ newMYSUB($2, $3, $4, $5, $6); }
+			{ SvREFCNT_inc(PL_compcv);
+			  newMYSUB($2, $3, $4, $5, $6); }
 	;
 
 /* Subroutine definition */
 subrout	:	SUB startsub subname proto subattrlist subbody
-			{ newATTRSUB($2, $3, $4, $5, $6); }
+			{ SvREFCNT_inc(PL_compcv);
+			  newATTRSUB($2, $3, $4, $5, $6); }
 	;
 
 startsub:	/* NULL */	/* start a regular subroutine scope */
-			{ $$ = start_subparse(FALSE, 0); }
+			{ $$ = start_subparse(FALSE, 0);
+			    SAVEFREESV(PL_compcv); }
 	;
 
 startanonsub:	/* NULL */	/* start an anonymous subroutine scope */
-			{ $$ = start_subparse(FALSE, CVf_ANON); }
+			{ $$ = start_subparse(FALSE, CVf_ANON);
+			    SAVEFREESV(PL_compcv); }
 	;
 
 startformsub:	/* NULL */	/* start a format subroutine scope */
-			{ $$ = start_subparse(TRUE, 0); }
+			{ $$ = start_subparse(TRUE, 0);
+			    SAVEFREESV(PL_compcv); }
 	;
 
 /* Name of a subroutine - must be a bareword, could be special */
@@ -412,7 +418,8 @@ package :	PACKAGE WORD ';'
 use	:	USE startsub
 			{ CvSPECIAL_on(PL_compcv); /* It's a BEGIN {} */ }
 		    WORD WORD listexpr ';'
-			{ utilize($1, $2, $4, $5, $6); }
+			 { SvREFCNT_inc(PL_compcv);
+			   utilize($1, $2, $4, $5, $6); }
 	;
 
 /* Ordinary expressions; logical combinations */
@@ -464,7 +471,8 @@ listop	:	LSTOP indirob argexpr /* map {...} @args or print $fh @args */
 	|	FUNC '(' listexprcom ')'             /* print (@args) */
 			{ $$ = convert($1, 0, $3); }
 	|	LSTOPSUB startanonsub block /* sub f(&@);   f { foo } ... */
-			{ $3 = newANONATTRSUB($2, 0, Nullop, $3); }
+			{ SvREFCNT_inc(PL_compcv);
+			  $3 = newANONATTRSUB($2, 0, Nullop, $3); }
 		    listexpr		%prec LSTOP  /* ... @bar */
 			{ $$ = newUNOP(OP_ENTERSUB, OPf_STACKED,
 				 append_elem(OP_LIST,
@@ -593,7 +601,8 @@ anonymous:	'[' expr ']'
 	|	HASHBRACK ';' '}'	%prec '(' /* { } (';' by tokener) */
 			{ $$ = newANONHASH(Nullop); }
 	|	ANONSUB startanonsub proto subattrlist block	%prec '('
-			{ $$ = newANONATTRSUB($2, $3, $4, $5); }
+			{ SvREFCNT_inc(PL_compcv);
+			  $$ = newANONATTRSUB($2, $3, $4, $5); }
 
     ;