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From b3937e202aaf10c2f8996e2993c880bb38a7a268 Mon Sep 17 00:00:00 2001
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From: Father Chrysostomos <sprout@cpan.org>
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Date: Wed, 1 Nov 2017 13:11:27 -0700
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Subject: [PATCH] =?UTF-8?q?Carp:=20Don=E2=80=99t=20choke=20on=20ISA=20cons?=
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=?UTF-8?q?tant?=
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This broke some time between 1.29 (perl 5.18) and 1.3301 (perl 5.20):
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$ perl5.20.1 -e 'package Foo { use constant ISA => 42; Bar::f() } package Bar { use Carp; sub f { carp "tun syn" } }'
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Not a GLOB reference at /usr/local/lib/perl5/5.20.1/Carp.pm line 560.
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and still persisted in bleadperl (Carp 1.43) until this commit.
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The code that goes poking through the symbol table needs to take into
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account that not all stash elements are globs.
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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dist/Carp/lib/Carp.pm | 3 ++-
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dist/Carp/t/Carp.t | 13 ++++++++++++-
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2 files changed, 14 insertions(+), 2 deletions(-)
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diff --git a/dist/Carp/lib/Carp.pm b/dist/Carp/lib/Carp.pm
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index 6127b26f54..ef11a0c046 100644
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--- a/dist/Carp/lib/Carp.pm
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+++ b/dist/Carp/lib/Carp.pm
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@@ -593,7 +593,8 @@ sub trusts_directly {
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for my $var (qw/ CARP_NOT ISA /) {
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# Don't try using the variable until we know it exists,
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# to avoid polluting the caller's namespace.
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- if ( $stash->{$var} && *{$stash->{$var}}{ARRAY} && @{$stash->{$var}} ) {
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+ if ( $stash->{$var} && ref \$stash->{$var} eq 'GLOB'
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+ && *{$stash->{$var}}{ARRAY} && @{$stash->{$var}} ) {
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return @{$stash->{$var}}
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}
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}
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diff --git a/dist/Carp/t/Carp.t b/dist/Carp/t/Carp.t
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index 65daed7c6c..b1e399d143 100644
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--- a/dist/Carp/t/Carp.t
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+++ b/dist/Carp/t/Carp.t
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@@ -3,7 +3,7 @@ no warnings "once";
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use Config;
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use IPC::Open3 1.0103 qw(open3);
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-use Test::More tests => 67;
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+use Test::More tests => 68;
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sub runperl {
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my(%args) = @_;
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@@ -488,6 +488,17 @@ SKIP:
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);
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}
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+{
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+ package Mpar;
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+ sub f { Carp::croak "tun syn" }
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+
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+ package Phou;
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+ $Phou::{ISA} = \42;
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+ eval { Mpar::f };
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+}
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+like $@, qr/tun syn/, 'Carp can handle non-glob ISA stash elems';
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+
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+
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# New tests go here
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# line 1 "XA"
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--
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2.13.6
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