perl/perl-5.33.1-die_unwind-global-destruction.patch

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From 042abef72d40ab7ff39127e2afae6e34dfc66404 Mon Sep 17 00:00:00 2001
From: Nicolas R <atoomic@cpan.org>
Date: Fri, 14 Aug 2020 16:16:22 -0500
Subject: [PATCH] die_unwind(): global destruction
MIME-Version: 1.0
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Fix #18063
During global destruction make sure we preserve
the string by using mortalcopy.
This is an update on 8c86f0238ecb5f32c2e7fba36e3edfdb54069068
change which avoided sv_mortalcopy in favor of sv_2mortal.
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
pp_ctl.c | 6 +++++-
t/op/die_unwind.t | 4 ++++
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/pp_ctl.c b/pp_ctl.c
index b8cd869ee0..cc244d7ba7 100644
--- a/pp_ctl.c
+++ b/pp_ctl.c
@@ -1716,7 +1716,11 @@ Perl_die_unwind(pTHX_ SV *msv)
* when unlocalising a tied var). So we do a dance with
* mortalising and SAVEFREEing.
*/
- sv_2mortal(SvREFCNT_inc_simple_NN(exceptsv));
+ if (PL_phase == PERL_PHASE_DESTRUCT) {
+ exceptsv = sv_mortalcopy(exceptsv);
+ } else {
+ exceptsv = sv_2mortal(SvREFCNT_inc_simple_NN(exceptsv));
+ }
/*
* Historically, perl used to set ERRSV ($@) early in the die
diff --git a/t/op/die_unwind.t b/t/op/die_unwind.t
index eee1ce534b..4b83ee6fac 100644
--- a/t/op/die_unwind.t
+++ b/t/op/die_unwind.t
@@ -69,4 +69,8 @@ is($uerr, "t3\n");
is($val, undef, "undefined return value from 'eval' block with 'die'");
is($err, "t3\n");
+fresh_perl_like(<<'EOS', qr/Custom Message During Global Destruction/, { switches => ['-w'], stderr => 1 } );
+package Foo; sub DESTROY { die "Custom Message During Global Destruction" }; package main; our $wut = bless [], "Foo"
+EOS
+
done_testing();
--
2.25.4