Allow non-arrowed form of chained subscripts after slices

Subject: Re: [perl #37039] perlref documentation about optional -> is too vague
Date: Thu, 1 Sep 2005 17:41:36 -0700
Message-ID: <20050902004136.GA2656@efn.org>

Date: Mon, 5 Sep 2005 08:10:20 -0700
Message-ID: <20050905151020.GA3556@efn.org>

p4raw-id: //depot/perl@25399

1 files changed, 18 insertions, 1 deletions

diff --git a/t/op/ref.t b/t/op/ref.t
index 53f3facac5..81a6543c34 100755
--- a/t/op/ref.t
+++ b/t/op/ref.t
@@ -8,7 +8,7 @@ BEGIN {
 require 'test.pl';
 use strict qw(refs subs);
 
-plan (89);
+plan (96);
 
 # Test glob operations.
 
@@ -425,6 +425,23 @@ TODO: {
 	'Accessing via a different NUL-containing name gives nothing');
 }
 
+# test derefs after list slice
+
+is ( ({foo => "bar"})[0]{foo}, "bar", 'hash deref from list slice w/o ->' );
+is ( ({foo => "bar"})[0]->{foo}, "bar", 'hash deref from list slice w/ ->' );
+is ( ([qw/foo bar/])[0][1], "bar", 'array deref from list slice w/o ->' );
+is ( ([qw/foo bar/])[0]->[1], "bar", 'array deref from list slice w/ ->' );
+is ( (sub {"bar"})[0](), "bar", 'code deref from list slice w/o ->' );
+is ( (sub {"bar"})[0]->(), "bar", 'code deref from list slice w/ ->' );
+
+# deref on empty list shouldn't autovivify
+{
+    local $@;
+    eval { ()[0]{foo} };
+    like ( "$@", "Can't use an undefined value as a HASH reference",
+           "deref of undef from list slice fails" );
+}
+
 # Bit of a hack to make test.pl happy. There are 3 more tests after it leaves.
 $test = curr_test();
 curr_test($test + 3);