autouse: fix autouse.t deparsing

autouse.t uses B as a random test XS module which it can defer loading.
However, B recently changed to not use Exporter, which upsets autouse:
but *only* when running under 't/TEST -deparse'. I'm not sure why it only
fails then, but in any case, this commit changes it so that it uses
Hash::Util instead.

1 files changed, 5 insertions, 4 deletions

diff --git a/dist/autouse/t/autouse.t b/dist/autouse/t/autouse.t
index a790403f0f..20ad9eb8d4 100644
--- a/dist/autouse/t/autouse.t
+++ b/dist/autouse/t/autouse.t
@@ -98,13 +98,14 @@ SKIP: {
 SKIP: {
     skip "Fails in 5.15.5 and below (perl bug)", 1 if $] < 5.0150051;
     use Config;
-    skip "no B", 1 unless $Config{extensions} =~ /\bB\b/;
+    skip "no Hash::Util", 1 unless $Config{extensions} =~ /\bHash::Util\b/;
     use warnings; local $^W = 1; no warnings 'once';
     my $w;
     local $SIG{__WARN__} = sub { $w .= shift };
-    use autouse B => "sv_undef";
-    *B::sv_undef = \&sv_undef;
-    require B;
+    # any old XS sub from any old module which uses Exporter
+    use autouse 'Hash::Util' => "all_keys";
+    *Hash::Util::all_keys = \&all_keys;
+    require Hash::Util;
     is $w, undef,
       'no redefinition warning when clobbering autouse stub with new XSUB';
 }