From 677ffc8fe97148750054b11e7fbd21c98f860ee1 Mon Sep 17 00:00:00 2001
From: Father Chrysostomos <sprout@cpan.org>
Date: Fri, 21 Sep 2012 18:23:20 -0700
Subject: [PATCH] =?UTF-8?q?Don=E2=80=99t=20leak=20deleted=20iterator=20whe?=
 =?UTF-8?q?n=20tying=20hash?=
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Petr Pisar: ported to 5.16.3
---
 pp_sys.c   |  7 +++++++
 t/op/tie.t | 13 +++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/pp_sys.c b/pp_sys.c
index 034a2d0..0e35d59 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -852,9 +852,16 @@ PP(pp_tie)
 
     switch(SvTYPE(varsv)) {
 	case SVt_PVHV:
+	{
+	    HE *entry;
 	    methname = "TIEHASH";
+	    if (HvLAZYDEL(varsv) && (entry = HvEITER((HV *)varsv))) {
+		HvLAZYDEL_off(varsv);
+		hv_free_ent((HV *)varsv, entry);
+	    }
 	    HvEITER_set(MUTABLE_HV(varsv), 0);
 	    break;
+	}
 	case SVt_PVAV:
 	    methname = "TIEARRAY";
 	    if (!AvREAL(varsv)) {
diff --git a/t/op/tie.t b/t/op/tie.t
index 9301bb3..5a536b8 100644
--- a/t/op/tie.t
+++ b/t/op/tie.t
@@ -1259,3 +1259,16 @@ $h{i}{j} = 'k';
 print $h{i}{j}, "\n";
 EXPECT
 k
+########
+
+# NAME Test that tying a hash does not leak a deleted iterator
+# This produced unbalanced string table warnings under
+# PERL_DESTRUCT_LEVEL=2.
+package l {
+    sub TIEHASH{bless[]}
+}
+$h = {foo=>0};
+each %$h;
+delete $$h{foo};
+tie %$h, 'l';
+EXPECT
-- 
1.8.1.4