[PATCH] Clear up perlcritic 'missing return' warning

From d3ec3cbeb496ea9d2b285aaa32359cae528a983b Mon Sep 17 00:00:00 2001
From: Mike Blackwell <maiku41@gmail.com>
Date: Tue, 15 May 2018 16:38:59 -0500
Subject: [PATCH] add returns to Perl files where missing


diff --git a/contrib/bloom/t/001_wal.pl b/contrib/bloom/t/001_wal.pl
index 55f2167d7f..0f2628b557 100644
--- a/contrib/bloom/t/001_wal.pl
+++ b/contrib/bloom/t/001_wal.pl
@@ -36,6 +36,7 @@ SELECT * FROM tst WHERE i = 7 AND t = 'e';
 	my $standby_result = $node_standby->safe_psql("postgres", $queries);
 
 	is($master_result, $standby_result, "$test_name: query result matches");
+	return;
 }
 
 # Initialize master node
diff --git a/contrib/intarray/bench/create_test.pl b/contrib/intarray/bench/create_test.pl
index f3262df05b..d2c678bb53 100755
--- a/contrib/intarray/bench/create_test.pl
+++ b/contrib/intarray/bench/create_test.pl
@@ -83,4 +83,5 @@ sub copytable
 	while (<$fff>) { print; }
 	close $fff;
 	print "\\.\n";
+	return;
 }
diff --git a/src/backend/catalog/Catalog.pm b/src/backend/catalog/Catalog.pm
index 95bf619c91..ae5b499b6a 100644
--- a/src/backend/catalog/Catalog.pm
+++ b/src/backend/catalog/Catalog.pm
@@ -367,6 +367,7 @@ sub RenameTempFile
 	{
 		rename($temp_name, $final_name) || die "rename: $temp_name: $!";
 	}
+	return;
 }
 
 # Find a symbol defined in a particular header file and extract the value.
diff --git a/src/backend/catalog/genbki.pl b/src/backend/catalog/genbki.pl
index ebdc919414..9be51d28b0 100644
--- a/src/backend/catalog/genbki.pl
+++ b/src/backend/catalog/genbki.pl
@@ -649,6 +649,7 @@ sub gen_pg_attribute
 			}
 		}
 	}
+	return;
 }
 
 # Given $pgattr_schema (the pg_attribute schema for a catalog sufficient for
@@ -706,6 +707,7 @@ sub morph_row_for_pgattr
 	}
 
 	Catalog::AddDefaultValues($row, $pgattr_schema, 'pg_attribute');
+	return;
 }
 
 # Write an entry to postgres.bki.
@@ -744,6 +746,7 @@ sub print_bki_insert
 		push @bki_values, $bki_value;
 	}
 	printf $bki "insert %s( %s )\n", $oid, join(' ', @bki_values);
+	return;
 }
 
 # Given a row reference, modify it so that it becomes a valid entry for
@@ -786,6 +789,7 @@ sub morph_row_for_schemapg
 		# Only the fixed-size portions of the descriptors are ever used.
 		delete $row->{$attname} if $column->{is_varlen};
 	}
+	return;
 }
 
 # Perform OID lookups on an array of OID names.
diff --git a/src/backend/parser/check_keywords.pl b/src/backend/parser/check_keywords.pl
index ad41e134ac..718441c215 100644
--- a/src/backend/parser/check_keywords.pl
+++ b/src/backend/parser/check_keywords.pl
@@ -18,6 +18,7 @@ sub error
 {
 	print STDERR @_;
 	$errors = 1;
+	return;
 }
 
 $, = ' ';     # set output field separator
diff --git a/src/backend/utils/mb/Unicode/convutils.pm b/src/backend/utils/mb/Unicode/convutils.pm
index 69ec099f29..103bd0264e 100644
--- a/src/backend/utils/mb/Unicode/convutils.pm
+++ b/src/backend/utils/mb/Unicode/convutils.pm
@@ -99,6 +99,7 @@ sub print_conversion_tables
 		$charset);
 	print_conversion_tables_direction($this_script, $csname, TO_UNICODE,
 		$charset);
+	return;
 }
 
 #############################################################################
@@ -160,6 +161,7 @@ sub print_conversion_tables_direction
 	}
 
 	close($out);
+	return;
 }
 
 sub print_from_utf8_combined_map
@@ -194,6 +196,7 @@ sub print_from_utf8_combined_map
 	}
 	print $out "\t/* $last_comment */" if ($verbose && $last_comment ne "");
 	print $out "\n};\n";
+	return;
 }
 
 sub print_to_utf8_combined_map
@@ -230,6 +233,7 @@ sub print_to_utf8_combined_map
 	}
 	print $out "\t/* $last_comment */" if ($verbose && $last_comment ne "");
 	print $out "\n};\n";
+	return;
 }
 
 #######################################################################
@@ -625,6 +629,7 @@ sub print_radix_table
 	if ($off != $tblsize) { die "table size didn't match!"; }
 
 	print $out "};\n";
+	return;
 }
 
 ###
diff --git a/src/backend/utils/sort/gen_qsort_tuple.pl b/src/backend/utils/sort/gen_qsort_tuple.pl
index 6186d0a5ba..b6b2ffa7d0 100644
--- a/src/backend/utils/sort/gen_qsort_tuple.pl
+++ b/src/backend/utils/sort/gen_qsort_tuple.pl
@@ -130,6 +130,8 @@ swapfunc(SortTuple *a, SortTuple *b, size_t n)
 #define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n)
 
 EOM
+
+	return;
 }
 
 sub emit_qsort_implementation
@@ -263,4 +265,6 @@ loop:
 	}
 }
 EOM
+
+	return;
 }
diff --git a/src/bin/pg_archivecleanup/t/010_pg_archivecleanup.pl b/src/bin/pg_archivecleanup/t/010_pg_archivecleanup.pl
index c84674c00a..22782d3042 100644
--- a/src/bin/pg_archivecleanup/t/010_pg_archivecleanup.pl
+++ b/src/bin/pg_archivecleanup/t/010_pg_archivecleanup.pl
@@ -21,6 +21,7 @@ sub create_files
 		print $file 'CONTENT';
 		close $file;
 	}
+	return;
 }
 
 create_files();
@@ -89,6 +90,7 @@ sub run_check
 		"$test_name: newer WAL file was not cleaned up");
 	ok(-f "$tempdir/unrelated_file",
 		"$test_name: unrelated file was not cleaned up");
+	return;
 }
 
 run_check('',                 'pg_archivecleanup');
diff --git a/src/bin/pg_rewind/RewindTest.pm b/src/bin/pg_rewind/RewindTest.pm
index 52531bba7a..60b54119e7 100644
--- a/src/bin/pg_rewind/RewindTest.pm
+++ b/src/bin/pg_rewind/RewindTest.pm
@@ -71,6 +71,7 @@ sub master_psql
 
 	system_or_bail 'psql', '-q', '--no-psqlrc', '-d',
 	  $node_master->connstr('postgres'), '-c', "$cmd";
+	return;
 }
 
 sub standby_psql
@@ -79,6 +80,7 @@ sub standby_psql
 
 	system_or_bail 'psql', '-q', '--no-psqlrc', '-d',
 	  $node_standby->connstr('postgres'), '-c', "$cmd";
+	return;
 }
 
 # Run a query against the master, and check that the output matches what's
@@ -112,6 +114,7 @@ sub check_query
 		$stdout =~ s/\r//g if $Config{osname} eq 'msys';
 		is($stdout, $expected_stdout, "$test_name: query result matches");
 	}
+	return;
 }
 
 sub setup_cluster
@@ -130,6 +133,7 @@ sub setup_cluster
 		'postgresql.conf', qq(
 wal_keep_segments = 20
 ));
+	return;
 }
 
 sub start_master
@@ -138,6 +142,8 @@ sub start_master
 
 	#### Now run the test-specific parts to initialize the master before setting
 	# up standby
+
+	return;
 }
 
 sub create_standby
@@ -162,6 +168,8 @@ recovery_target_timeline='latest'
 
 	# The standby may have WAL to apply before it matches the primary.  That
 	# is fine, because no test examines the standby before promotion.
+
+	return;
 }
 
 sub promote_standby
@@ -183,6 +191,8 @@ sub promote_standby
 	# after promotion so quickly that when pg_rewind runs, the standby has not
 	# performed a checkpoint after promotion yet.
 	standby_psql("checkpoint");
+
+	return;
 }
 
 sub run_pg_rewind
@@ -266,6 +276,8 @@ recovery_target_timeline='latest'
 	$node_master->start;
 
 	#### Now run the test-specific parts to check the result
+
+	return;
 }
 
 # Clean up after the test. Stop both servers, if they're still running.
@@ -273,6 +285,7 @@ sub clean_rewind_test
 {
 	$node_master->teardown_node  if defined $node_master;
 	$node_standby->teardown_node if defined $node_standby;
+	return;
 }
 
 1;
diff --git a/src/bin/pg_rewind/t/001_basic.pl b/src/bin/pg_rewind/t/001_basic.pl
index 87bb71e8ed..53dbf45be2 100644
--- a/src/bin/pg_rewind/t/001_basic.pl
+++ b/src/bin/pg_rewind/t/001_basic.pl
@@ -97,6 +97,7 @@ in master, before promotion
 	}
 
 	RewindTest::clean_rewind_test();
+	return;
 }
 
 # Run the test in both modes
diff --git a/src/bin/pg_rewind/t/002_databases.pl b/src/bin/pg_rewind/t/002_databases.pl
index bef0e173dc..2c9e427831 100644
--- a/src/bin/pg_rewind/t/002_databases.pl
+++ b/src/bin/pg_rewind/t/002_databases.pl
@@ -53,6 +53,7 @@ template1
 	}
 
 	RewindTest::clean_rewind_test();
+	return;
 }
 
 # Run the test in both modes.
diff --git a/src/bin/pg_rewind/t/003_extrafiles.pl b/src/bin/pg_rewind/t/003_extrafiles.pl
index 8b469cdae8..496f38c457 100644
--- a/src/bin/pg_rewind/t/003_extrafiles.pl
+++ b/src/bin/pg_rewind/t/003_extrafiles.pl
@@ -81,6 +81,7 @@ sub run_test
 		"file lists match");
 
 	RewindTest::clean_rewind_test();
+	return;
 }
 
 # Run the test in both modes.
diff --git a/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl b/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
index feadaa6a0f..280eceb992 100644
--- a/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
+++ b/src/bin/pg_rewind/t/004_pg_xlog_symlink.pl
@@ -72,6 +72,7 @@ in standby, after promotion
 		'table content');
 
 	RewindTest::clean_rewind_test();
+	return;
 }
 
 # Run the test in both modes
diff --git a/src/bin/pgbench/t/001_pgbench_with_server.pl b/src/bin/pgbench/t/001_pgbench_with_server.pl
index 00fb04fe1e..b9308f7367 100644
--- a/src/bin/pgbench/t/001_pgbench_with_server.pl
+++ b/src/bin/pgbench/t/001_pgbench_with_server.pl
@@ -42,6 +42,8 @@ sub pgbench
 
 	# cleanup?
 	#unlink @filenames or die "cannot unlink files (@filenames): $!";
+
+	return;
 }
 
 # Test concurrent insertion into table with UNIQUE oid column.  DDL expects
@@ -817,6 +819,7 @@ sub check_pgbench_logs
 		};
 	}
 	ok(unlink(@logs), "remove log files");
+	return;
 }
 
 my $bdir = $node->basedir;
diff --git a/src/bin/pgbench/t/002_pgbench_no_server.pl b/src/bin/pgbench/t/002_pgbench_no_server.pl
index a9e067ba4e..aa47710ace 100644
--- a/src/bin/pgbench/t/002_pgbench_no_server.pl
+++ b/src/bin/pgbench/t/002_pgbench_no_server.pl
@@ -24,6 +24,7 @@ sub pgbench
 	print STDERR "opts=$opts, stat=$stat, out=$out, err=$err, name=$name";
 	command_checks_all([ 'pgbench', split(/\s+/, $opts) ],
 		$stat, $out, $err, $name);
+	return;
 }
 
 # invoke pgbench with scripts
@@ -48,6 +49,7 @@ sub pgbench_scripts
 		}
 	}
 	command_checks_all(\@cmd, $stat, $out, $err, $name);
+	return;
 }
 
 #
diff --git a/src/include/catalog/reformat_dat_file.pl b/src/include/catalog/reformat_dat_file.pl
index 7f6dc6e4c5..687aca0b16 100755
--- a/src/include/catalog/reformat_dat_file.pl
+++ b/src/include/catalog/reformat_dat_file.pl
@@ -207,6 +207,7 @@ sub strip_default_values
 	{
 		delete $row->{pronargs} if defined $row->{proargtypes};
 	}
+	return;
 }
 
 # Format the individual elements of a Perl hash into a valid string
diff --git a/src/interfaces/ecpg/preproc/parse.pl b/src/interfaces/ecpg/preproc/parse.pl
index 983c3a3d89..b20383ab17 100644
--- a/src/interfaces/ecpg/preproc/parse.pl
+++ b/src/interfaces/ecpg/preproc/parse.pl
@@ -415,6 +415,7 @@ sub main
 			}
 		}
 	}
+	return;
 }
 
 
@@ -431,6 +432,7 @@ sub include_file
 		add_to_buffer($buffer, $_);
 	}
 	close($fh);
+	return;
 }
 
 sub include_addon
@@ -472,6 +474,7 @@ sub include_addon
 sub add_to_buffer
 {
 	push(@{ $buff{ $_[0] } }, "$_[1]\n");
+	return;
 }
 
 sub dump_buffer
@@ -480,6 +483,7 @@ sub dump_buffer
 	print '/* ', $buffer, ' */', "\n";
 	my $ref = $buff{$buffer};
 	print @$ref;
+	return;
 }
 
 sub dump_fields
@@ -582,6 +586,7 @@ sub dump_fields
 			add_to_buffer('rules', ' { $$ = NULL; }');
 		}
 	}
+	return;
 }
 
 
@@ -673,4 +678,5 @@ sub preload_addons
 			push(@{ $x->{lines} }, @code);
 		}
 	}
+	return;
 }
diff --git a/src/pl/plperl/plc_perlboot.pl b/src/pl/plperl/plc_perlboot.pl
index 05334a662d..f41aa80e80 100644
--- a/src/pl/plperl/plc_perlboot.pl
+++ b/src/pl/plperl/plc_perlboot.pl
@@ -62,6 +62,7 @@ sub ::encode_array_constructor
 		(my $msg = shift) =~ s/\(eval \d+\) //g;
 		chomp $msg;
 		&::elog(&::WARNING, $msg);
+		return;
 	}
 	$SIG{__WARN__} = \&plperl_warn;
 
diff --git a/src/pl/plperl/text2macro.pl b/src/pl/plperl/text2macro.pl
index 27c6ef7e42..52fcbe1be1 100644
--- a/src/pl/plperl/text2macro.pl
+++ b/src/pl/plperl/text2macro.pl
@@ -99,4 +99,5 @@ sub selftest
 	warn "Test string: $string\n";
 	warn "Result     : $result";
 	die "Failed!" if $result ne "$string\n";
+	return;
 }
diff --git a/src/test/authentication/t/001_password.pl b/src/test/authentication/t/001_password.pl
index c8dc6606be..3a3b0eb7e8 100644
--- a/src/test/authentication/t/001_password.pl
+++ b/src/test/authentication/t/001_password.pl
@@ -31,6 +31,7 @@ sub reset_pg_hba
 	unlink($node->data_dir . '/pg_hba.conf');
 	$node->append_conf('pg_hba.conf', "local all all $hba_method");
 	$node->reload;
+	return;
 }
 
 # Test access for a single role, useful to wrap all tests into one.
@@ -47,6 +48,7 @@ sub test_role
 	my $res = $node->psql('postgres', undef, extra_params => [ '-U', $role ]);
 	is($res, $expected_res,
 		"authentication $status_string for method $method, role $role");
+	return;
 }
 
 # Initialize master node
diff --git a/src/test/authentication/t/002_saslprep.pl b/src/test/authentication/t/002_saslprep.pl
index e09273edd4..c4b335c45f 100644
--- a/src/test/authentication/t/002_saslprep.pl
+++ b/src/test/authentication/t/002_saslprep.pl
@@ -27,6 +27,7 @@ sub reset_pg_hba
 	unlink($node->data_dir . '/pg_hba.conf');
 	$node->append_conf('pg_hba.conf', "local all all $hba_method");
 	$node->reload;
+	return;
 }
 
 # Test access for a single role, useful to wrap all tests into one.
@@ -45,6 +46,7 @@ sub test_login
 	is($res, $expected_res,
 		"authentication $status_string for role $role with password $password"
 	);
+	return;
 }
 
 # Initialize master node. Force UTF-8 encoding, so that we can use non-ASCII
diff --git a/src/test/kerberos/t/001_auth.pl b/src/test/kerberos/t/001_auth.pl
index 5e638eb2eb..54f564779d 100644
--- a/src/test/kerberos/t/001_auth.pl
+++ b/src/test/kerberos/t/001_auth.pl
@@ -164,6 +164,7 @@ sub test_access
 			'-U', $role
 		]);
 	is($res, $expected_res, $test_name);
+	return;
 }
 
 unlink($node->data_dir . '/pg_hba.conf');
diff --git a/src/test/ldap/t/001_auth.pl b/src/test/ldap/t/001_auth.pl
index 9ade9a2b00..67b406c981 100644
--- a/src/test/ldap/t/001_auth.pl
+++ b/src/test/ldap/t/001_auth.pl
@@ -144,6 +144,7 @@ sub test_access
 	my $res =
 	  $node->psql('postgres', 'SELECT 1', extra_params => [ '-U', $role ]);
 	is($res, $expected_res, $test_name);
+	return;
 }
 
 note "simple bind";
diff --git a/src/test/perl/PostgresNode.pm b/src/test/perl/PostgresNode.pm
index 82a2611a1e..d12dd60e73 100644
--- a/src/test/perl/PostgresNode.pm
+++ b/src/test/perl/PostgresNode.pm
@@ -372,6 +372,7 @@ sub dump_info
 {
 	my ($self) = @_;
 	print $self->info;
+	return;
 }
 
 
@@ -393,6 +394,7 @@ sub set_replication_conf
 		  "host replication all $test_localhost/32 sspi include_realm=1 map=regress\n";
 	}
 	close $hba;
+	return;
 }
 
 =pod
@@ -487,6 +489,7 @@ sub init
 
 	$self->set_replication_conf if $params{allows_streaming};
 	$self->enable_archiving     if $params{has_archiving};
+	return;
 }
 
 =pod
@@ -512,6 +515,8 @@ sub append_conf
 
 	chmod($self->group_access() ? 0640 : 0600, $conffile)
 	  or die("unable to set permissions for $conffile");
+
+	return;
 }
 
 =pod
@@ -538,6 +543,7 @@ sub backup
 	TestLib::system_or_bail('pg_basebackup', '-D', $backup_path, '-p', $port,
 		'--no-sync');
 	print "# Backup finished\n";
+	return;
 }
 
 =item $node->backup_fs_hot(backup_name)
@@ -556,6 +562,7 @@ sub backup_fs_hot
 {
 	my ($self, $backup_name) = @_;
 	$self->_backup_fs($backup_name, 1);
+	return;
 }
 
 =item $node->backup_fs_cold(backup_name)
@@ -572,6 +579,7 @@ sub backup_fs_cold
 {
 	my ($self, $backup_name) = @_;
 	$self->_backup_fs($backup_name, 0);
+	return;
 }
 
 
@@ -612,6 +620,7 @@ sub _backup_fs
 	}
 
 	print "# Backup finished\n";
+	return;
 }
 
 
@@ -672,6 +681,7 @@ port = $port
 ));
 	$self->enable_streaming($root_node) if $params{has_streaming};
 	$self->enable_restoring($root_node) if $params{has_restoring};
+	return;
 }
 
 =pod
@@ -703,6 +713,7 @@ sub start
 	}
 
 	$self->_update_pid(1);
+	return;
 }
 
 =pod
@@ -728,6 +739,7 @@ sub stop
 	print "### Stopping node \"$name\" using mode $mode\n";
 	TestLib::system_or_bail('pg_ctl', '-D', $pgdata, '-m', $mode, 'stop');
 	$self->_update_pid(0);
+	return;
 }
 
 =pod
@@ -746,6 +758,7 @@ sub reload
 	my $name   = $self->name;
 	print "### Reloading node \"$name\"\n";
 	TestLib::system_or_bail('pg_ctl', '-D', $pgdata, 'reload');
+	return;
 }
 
 =pod
@@ -767,6 +780,7 @@ sub restart
 	TestLib::system_or_bail('pg_ctl', '-D', $pgdata, '-l', $logfile,
 		'restart');
 	$self->_update_pid(1);
+	return;
 }
 
 =pod
@@ -787,6 +801,7 @@ sub promote
 	print "### Promoting node \"$name\"\n";
 	TestLib::system_or_bail('pg_ctl', '-D', $pgdata, '-l', $logfile,
 		'promote');
+	return;
 }
 
 # Internal routine to enable streaming replication on a standby node.
@@ -802,6 +817,7 @@ sub enable_streaming
 primary_conninfo='$root_connstr application_name=$name'
 standby_mode=on
 ));
+	return;
 }
 
 # Internal routine to enable archive recovery command on a standby node
@@ -830,6 +846,7 @@ sub enable_restoring
 restore_command = '$copy_command'
 standby_mode = on
 ));
+	return;
 }
 
 # Internal routine to enable archiving
@@ -859,6 +876,7 @@ sub enable_archiving
 archive_mode = on
 archive_command = '$copy_command'
 ));
+	return;
 }
 
 # Internal method
@@ -885,6 +903,7 @@ sub _update_pid
 
 	# Complain if we expected to find a pidfile.
 	BAIL_OUT("postmaster.pid unexpectedly not present") if $is_running;
+	return;
 }
 
 =pod
@@ -1014,7 +1033,7 @@ sub teardown_node
 	my $self = shift;
 
 	$self->stop('immediate');
-
+	return;
 }
 
 =pod
@@ -1030,6 +1049,7 @@ sub clean_node
 	my $self = shift;
 
 	rmtree $self->{_basedir} unless defined $self->{_pid};
+	return;
 }
 
 =pod
@@ -1351,6 +1371,7 @@ sub command_ok
 	local $ENV{PGPORT} = $self->port;
 
 	TestLib::command_ok(@_);
+	return;
 }
 
 =pod
@@ -1368,6 +1389,7 @@ sub command_fails
 	local $ENV{PGPORT} = $self->port;
 
 	TestLib::command_fails(@_);
+	return;
 }
 
 =pod
@@ -1385,6 +1407,7 @@ sub command_like
 	local $ENV{PGPORT} = $self->port;
 
 	TestLib::command_like(@_);
+	return;
 }
 
 =pod
@@ -1402,6 +1425,7 @@ sub command_checks_all
 	local $ENV{PGPORT} = $self->port;
 
 	TestLib::command_checks_all(@_);
+	return;
 }
 
 =pod
@@ -1427,6 +1451,7 @@ sub issues_sql_like
 	ok($result, "@$cmd exit code 0");
 	my $log = TestLib::slurp_file($self->logfile);
 	like($log, $expected_sql, "$test_name: SQL found in server log");
+	return;
 }
 
 =pod
@@ -1445,6 +1470,7 @@ sub run_log
 	local $ENV{PGPORT} = $self->port;
 
 	TestLib::run_log(@_);
+	return;
 }
 
 =pod
@@ -1548,6 +1574,7 @@ sub wait_for_catchup
 	$self->poll_query_until('postgres', $query)
 	  or croak "timed out waiting for catchup";
 	print "done\n";
+	return;
 }
 
 =pod
@@ -1590,6 +1617,7 @@ sub wait_for_slot_catchup
 	$self->poll_query_until('postgres', $query)
 	  or croak "timed out waiting for catchup";
 	print "done\n";
+	return;
 }
 
 =pod
diff --git a/src/test/perl/SimpleTee.pm b/src/test/perl/SimpleTee.pm
index ea2f2ee828..9de7b1ac32 100644
--- a/src/test/perl/SimpleTee.pm
+++ b/src/test/perl/SimpleTee.pm
@@ -13,7 +13,7 @@ use strict;
 sub TIEHANDLE
 {
 	my $self = shift;
-	bless \@_, $self;
+	return bless \@_, $self;
 }
 
 sub PRINT
diff --git a/src/test/perl/TestLib.pm b/src/test/perl/TestLib.pm
index c9f824b4c6..77499c01e9 100644
--- a/src/test/perl/TestLib.pm
+++ b/src/test/perl/TestLib.pm
@@ -194,6 +194,7 @@ sub system_or_bail
 	{
 		BAIL_OUT("system $_[0] failed");
 	}
+	return;
 }
 
 sub run_log
@@ -244,6 +245,7 @@ sub append_to_file
 	  or die "could not write \"$filename\": $!";
 	print $fh $str;
 	close $fh;
+	return;	
 }
 
 # Check that all file/dir modes in a directory match the expected values,
@@ -338,6 +340,7 @@ sub chmod_recursive
 			}
 		},
 		$dir);
+	return;
 }
 
 # Check presence of a given regexp within pg_config.h for the installation
@@ -366,6 +369,7 @@ sub command_ok
 	my ($cmd, $test_name) = @_;
 	my $result = run_log($cmd);
 	ok($result, $test_name);
+	return;
 }
 
 sub command_fails
@@ -373,6 +377,7 @@ sub command_fails
 	my ($cmd, $test_name) = @_;
 	my $result = run_log($cmd);
 	ok(!$result, $test_name);
+	return;
 }
 
 sub command_exit_is
@@ -394,6 +399,7 @@ sub command_exit_is
 	  ? ($h->full_results)[0]
 	  : $h->result(0);
 	is($result, $expected, $test_name);
+	return;
 }
 
 sub program_help_ok
@@ -406,6 +412,7 @@ sub program_help_ok
 	ok($result, "$cmd --help exit code 0");
 	isnt($stdout, '', "$cmd --help goes to stdout");
 	is($stderr, '', "$cmd --help nothing to stderr");
+	return;
 }
 
 sub program_version_ok
@@ -418,6 +425,7 @@ sub program_version_ok
 	ok($result, "$cmd --version exit code 0");
 	isnt($stdout, '', "$cmd --version goes to stdout");
 	is($stderr, '', "$cmd --version nothing to stderr");
+	return;
 }
 
 sub program_options_handling_ok
@@ -430,6 +438,7 @@ sub program_options_handling_ok
 	  '2>', \$stderr;
 	ok(!$result, "$cmd with invalid option nonzero exit code");
 	isnt($stderr, '', "$cmd with invalid option prints error message");
+	return;
 }
 
 sub command_like
@@ -441,6 +450,7 @@ sub command_like
 	ok($result, "$test_name: exit code 0");
 	is($stderr, '', "$test_name: no stderr");
 	like($stdout, $expected_stdout, "$test_name: matches");
+	return;
 }
 
 sub command_like_safe
@@ -460,6 +470,7 @@ sub command_like_safe
 	ok($result, "$test_name: exit code 0");
 	is($stderr, '', "$test_name: no stderr");
 	like($stdout, $expected_stdout, "$test_name: matches");
+	return;
 }
 
 sub command_fails_like
@@ -470,6 +481,7 @@ sub command_fails_like
 	my $result = IPC::Run::run $cmd, '>', \$stdout, '2>', \$stderr;
 	ok(!$result, "$test_name: exit code not 0");
 	like($stderr, $expected_stderr, "$test_name: matches");
+	return;
 }
 
 # Run a command and check its status and outputs.
@@ -509,6 +521,8 @@ sub command_checks_all
 	{
 		like($stderr, $re, "$test_name stderr /$re/");
 	}
+	
+	return;
 }
 
 1;
diff --git a/src/test/recovery/t/001_stream_rep.pl b/src/test/recovery/t/001_stream_rep.pl
index a29a6c720b..a0d3e8f357 100644
--- a/src/test/recovery/t/001_stream_rep.pl
+++ b/src/test/recovery/t/001_stream_rep.pl
@@ -97,6 +97,8 @@ sub test_target_session_attrs
 		1,
 		"connect to node $target_name if mode \"$mode\" and $node1_name,$node2_name listed"
 	);
+
+	return;
 }
 
 # Connect to master in "read-write" mode with master,standby1 list.
@@ -195,6 +197,7 @@ sub replay_check
 	$node_standby_2->safe_psql('postgres',
 		qq[SELECT 1 FROM replayed WHERE val = $newval])
 	  or die "standby_2 didn't replay standby_1 value $newval";
+	return;
 }
 
 replay_check();
diff --git a/src/test/recovery/t/003_recovery_targets.pl b/src/test/recovery/t/003_recovery_targets.pl
index 824fa4da52..e867479f20 100644
--- a/src/test/recovery/t/003_recovery_targets.pl
+++ b/src/test/recovery/t/003_recovery_targets.pl
@@ -41,6 +41,8 @@ sub test_recovery_standby
 
 	# Stop standby node
 	$node_standby->teardown_node;
+
+	return;
 }
 
 # Initialize master node
diff --git a/src/test/recovery/t/007_sync_rep.pl b/src/test/recovery/t/007_sync_rep.pl
index 0ddf70b8b8..bba47da17a 100644
--- a/src/test/recovery/t/007_sync_rep.pl
+++ b/src/test/recovery/t/007_sync_rep.pl
@@ -24,6 +24,7 @@ sub test_sync_state
 	}
 
 	ok($self->poll_query_until('postgres', $check_sql, $expected), $msg);
+	return;
 }
 
 # Initialize master node
diff --git a/src/test/recovery/t/009_twophase.pl b/src/test/recovery/t/009_twophase.pl
index 93c22d181c..9ea3bd65fc 100644
--- a/src/test/recovery/t/009_twophase.pl
+++ b/src/test/recovery/t/009_twophase.pl
@@ -20,6 +20,7 @@ sub configure_and_reload
 	));
 	$node->psql('postgres', "SELECT pg_reload_conf()", stdout => \$psql_out);
 	is($psql_out, 't', "reload node $name with $parameter");
+	return;
 }
 
 # Set up two nodes, which will alternately be master and replication standby.
diff --git a/src/test/ssl/ServerSetup.pm b/src/test/ssl/ServerSetup.pm
index ced279c31b..1cd3badaa1 100644
--- a/src/test/ssl/ServerSetup.pm
+++ b/src/test/ssl/ServerSetup.pm
@@ -47,6 +47,7 @@ sub test_connect_ok
 	];
 
 	command_ok($cmd, $test_name);
+	return;
 }
 
 sub test_connect_fails
@@ -60,6 +61,7 @@ sub test_connect_fails
 	];
 
 	command_fails_like($cmd, $expected_stderr, $test_name);
+	return;
 }
 
 # Copy a set of files, taking into account wildcards
@@ -75,6 +77,7 @@ sub copy_files
 		copy($orig_file, "$dest/$base_file")
 		  or die "Could not copy $orig_file to $dest";
 	}
+	return;
 }
 
 sub configure_test_server_for_ssl
@@ -130,6 +133,8 @@ sub configure_test_server_for_ssl
 
 	# Change pg_hba after restart because hostssl requires ssl=on
 	configure_hba_for_ssl($node, $serverhost, $authmethod);
+
+	return;
 }
 
 # Change the configuration to use given server cert file, and reload
@@ -150,6 +155,7 @@ sub switch_server_cert
 	close $sslconf;
 
 	$node->restart;
+	return;
 }
 
 sub configure_hba_for_ssl
@@ -173,4 +179,7 @@ sub configure_hba_for_ssl
 	print $hba
 	  "hostssl certdb          all             ::1/128                 cert\n";
 	close $hba;
+	return;
 }
+
+1;
\ No newline at end of file
diff --git a/src/tools/copyright.pl b/src/tools/copyright.pl
index 41cb93d658..08b9e5b42e 100755
--- a/src/tools/copyright.pl
+++ b/src/tools/copyright.pl
@@ -62,6 +62,7 @@ sub wanted
 		$line =~ s/$cc (\d{4}), $pgdg/$ccliteral $1-$year, $pgdg/i;
 	}
 	untie @lines;
+	return;
 }
 
 print "Manually update:\n";
diff --git a/src/tools/git_changelog b/src/tools/git_changelog
index 1262bc104c..af9afcf1f0 100755
--- a/src/tools/git_changelog
+++ b/src/tools/git_changelog
@@ -333,6 +333,7 @@ sub push_commit
 	push @{ $all_commits_by_branch{ $c->{'branch'} } }, $cc;
 	$cc->{'branch_position'}{ $c->{'branch'} } =
 	  -1 + @{ $all_commits_by_branch{ $c->{'branch'} } };
+	return;
 }
 
 sub hash_commit
@@ -355,6 +356,7 @@ sub parse_datetime
 sub output_str
 {
 	($oldest_first) ? ($output_line .= sprintf(shift, @_)) : printf(@_);
+	return;
 }
 
 sub output_details
@@ -395,6 +397,7 @@ sub output_details
 		}
 	}
 	output_str("\n");
+	return;
 }
 
 sub usage
diff --git a/src/tools/msvc/Install.pm b/src/tools/msvc/Install.pm
index 67124bb109..6f1c30546a 100644
--- a/src/tools/msvc/Install.pm
+++ b/src/tools/msvc/Install.pm
@@ -40,6 +40,7 @@ sub lcopy
 	copy($src, $target)
 	  || confess "Could not copy $src to $target\n";
 
+	return;
 }
 
 sub Install
@@ -173,6 +174,7 @@ sub Install
 	GenerateNLSFiles($target, $config->{nls}, $majorver) if ($config->{nls});
 
 	print "Installation complete.\n";
+	return;
 }
 
 sub EnsureDirectories
@@ -183,6 +185,7 @@ sub EnsureDirectories
 	{
 		mkdir $target . '/' . $d unless -d ($target . '/' . $d);
 	}
+	return;
 }
 
 sub CopyFiles
@@ -200,6 +203,7 @@ sub CopyFiles
 		lcopy($f, $target . basename($f));
 	}
 	print "\n";
+	return;
 }
 
 sub CopySetOfFiles
@@ -215,6 +219,7 @@ sub CopySetOfFiles
 		lcopy($_, $tgt) || croak "Could not copy $_: $!\n";
 	}
 	print "\n";
+	return;
 }
 
 sub CopySolutionOutput
@@ -340,6 +345,7 @@ sub CopySolutionOutput
 		print ".";
 	}
 	print "\n";
+	return;
 }
 
 sub GenerateConversionScript
@@ -377,6 +383,7 @@ sub GenerateConversionScript
 	print $F $sql;
 	close($F);
 	print "\n";
+	return;
 }
 
 sub GenerateTimezoneFiles
@@ -408,6 +415,7 @@ sub GenerateTimezoneFiles
 
 	system(@args);
 	print "\n";
+	return;
 }
 
 sub GenerateTsearchFiles
@@ -449,6 +457,7 @@ sub GenerateTsearchFiles
 	}
 	close($F);
 	print "\n";
+	return;
 }
 
 sub CopyContribFiles
@@ -475,6 +484,7 @@ sub CopyContribFiles
 		}
 	}
 	print "\n";
+	return;
 }
 
 sub CopySubdirFiles
@@ -561,6 +571,7 @@ sub CopySubdirFiles
 			print '.';
 		}
 	}
+	return;
 }
 
 sub ParseAndCleanRule
@@ -676,6 +687,7 @@ sub CopyIncludeFiles
 		$target . '/include/informix/esql/',
 		'src/interfaces/ecpg/include/',
 		split /\s+/, $1);
+	return;
 }
 
 sub GenerateNLSFiles
@@ -719,6 +731,7 @@ sub GenerateNLSFiles
 		}
 	}
 	print "\n";
+	return;
 }
 
 sub DetermineMajorVersion
diff --git a/src/tools/msvc/MSBuildProject.pm b/src/tools/msvc/MSBuildProject.pm
index 2726d603af..27397ba3fb 100644
--- a/src/tools/msvc/MSBuildProject.pm
+++ b/src/tools/msvc/MSBuildProject.pm
@@ -80,6 +80,7 @@ EOF
 			strpool => 'true',
 			runtime => 'MultiThreadedDLL'
 		});
+	return;
 }
 
 sub AddDefine
@@ -87,6 +88,7 @@ sub AddDefine
 	my ($self, $def) = @_;
 
 	$self->{defines} .= $def . ';';
+	return;
 }
 
 sub WriteReferences
@@ -112,6 +114,7 @@ EOF
   </ItemGroup>
 EOF
 	}
+	return;
 }
 
 sub WriteFiles
@@ -223,6 +226,7 @@ EOF
   </ItemGroup>
 EOF
 	}
+	return;
 }
 
 sub WriteConfigurationHeader
@@ -234,6 +238,7 @@ sub WriteConfigurationHeader
       <Platform>$self->{platform}</Platform>
     </ProjectConfiguration>
 EOF
+	return;
 }
 
 sub WriteConfigurationPropertyGroup
@@ -252,6 +257,7 @@ sub WriteConfigurationPropertyGroup
     <WholeProgramOptimization>$p->{wholeopt}</WholeProgramOptimization>
   </PropertyGroup>
 EOF
+	return;
 }
 
 sub WritePropertySheetsPropertyGroup
@@ -262,6 +268,7 @@ sub WritePropertySheetsPropertyGroup
     <Import Project="\$(UserRootDir)\\Microsoft.Cpp.\$(Platform).user.props" Condition="exists('\$(UserRootDir)\\Microsoft.Cpp.\$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
 EOF
+	return;
 }
 
 sub WriteAdditionalProperties
@@ -272,6 +279,7 @@ sub WriteAdditionalProperties
     <IntDir Condition="'\$(Configuration)|\$(Platform)'=='$cfgname|$self->{platform}'">.\\$cfgname\\$self->{name}\\</IntDir>
     <LinkIncremental Condition="'\$(Configuration)|\$(Platform)'=='$cfgname|$self->{platform}'">false</LinkIncremental>
 EOF
+	return;
 }
 
 sub WriteItemDefinitionGroup
@@ -364,6 +372,7 @@ EOF
 	print $f <<EOF;
   </ItemDefinitionGroup>
 EOF
+	return;
 }
 
 sub Footer
@@ -377,6 +386,7 @@ sub Footer
   </ImportGroup>
 </Project>
 EOF
+	return;
 }
 
 package VC2010Project;
@@ -441,6 +451,7 @@ sub WriteConfigurationPropertyGroup
     <PlatformToolset>$self->{PlatformToolset}</PlatformToolset>
   </PropertyGroup>
 EOF
+	return;
 }
 
 package VC2013Project;
diff --git a/src/tools/msvc/Mkvcbuild.pm b/src/tools/msvc/Mkvcbuild.pm
index d0d7d46495..4543d87d83 100644
--- a/src/tools/msvc/Mkvcbuild.pm
+++ b/src/tools/msvc/Mkvcbuild.pm
@@ -964,6 +964,7 @@ sub AddContrib
 
 	# Are there any output data files to build?
 	GenerateContribSqlFiles($n, $mf);
+	return;
 }
 
 sub GenerateContribSqlFiles
@@ -1010,6 +1011,7 @@ sub GenerateContribSqlFiles
 			}
 		}
 	}
+	return;
 }
 
 sub AdjustContribProj
@@ -1020,6 +1022,7 @@ sub AdjustContribProj
 		\@contrib_uselibpq,       \@contrib_uselibpgport,
 		\@contrib_uselibpgcommon, $contrib_extralibs,
 		$contrib_extrasource,     $contrib_extraincludes);
+	return;
 }
 
 sub AdjustFrontendProj
@@ -1030,6 +1033,7 @@ sub AdjustFrontendProj
 		\@frontend_uselibpq,       \@frontend_uselibpgport,
 		\@frontend_uselibpgcommon, $frontend_extralibs,
 		$frontend_extrasource,     $frontend_extraincludes);
+	return;
 }
 
 sub AdjustModule
@@ -1086,6 +1090,7 @@ sub AdjustModule
 			$proj->AddFile($i);
 		}
 	}
+	return;
 }
 
 END
diff --git a/src/tools/msvc/Project.pm b/src/tools/msvc/Project.pm
index 46c680d536..261c913ea0 100644
--- a/src/tools/msvc/Project.pm
+++ b/src/tools/msvc/Project.pm
@@ -45,6 +45,7 @@ sub AddFile
 	my ($self, $filename) = @_;
 
 	$self->{files}->{$filename} = 1;
+	return;
 }
 
 sub AddFiles
@@ -56,6 +57,7 @@ sub AddFiles
 	{
 		$self->{files}->{ $dir . "/" . $f } = 1;
 	}
+	return;
 }
 
 sub ReplaceFile
@@ -110,6 +112,7 @@ sub RelocateFiles
 			$self->AddFile($targetdir . '/' . basename($f));
 		}
 	}
+	return;
 }
 
 sub AddReference
@@ -122,6 +125,7 @@ sub AddReference
 		$self->AddLibrary(
 			"__CFGNAME__/" . $ref->{name} . "/" . $ref->{name} . ".lib");
 	}
+	return;
 }
 
 sub AddLibrary
@@ -138,6 +142,7 @@ sub AddLibrary
 	{
 		push @{ $self->{suffixlib} }, $lib;
 	}
+	return;
 }
 
 sub AddIncludeDir
@@ -149,6 +154,7 @@ sub AddIncludeDir
 		$self->{includes} .= ';';
 	}
 	$self->{includes} .= $inc;
+	return;
 }
 
 sub AddPrefixInclude
@@ -156,6 +162,7 @@ sub AddPrefixInclude
 	my ($self, $inc) = @_;
 
 	$self->{prefixincludes} = $inc . ';' . $self->{prefixincludes};
+	return;
 }
 
 sub AddDefine
@@ -164,6 +171,7 @@ sub AddDefine
 
 	$def =~ s/"/&quot;&quot;/g;
 	$self->{defines} .= $def . ';';
+	return;
 }
 
 sub FullExportDLL
@@ -173,6 +181,7 @@ sub FullExportDLL
 	$self->{builddef} = 1;
 	$self->{def}      = "./__CFGNAME__/$self->{name}/$self->{name}.def";
 	$self->{implib}   = "__CFGNAME__/$self->{name}/$libname";
+	return;
 }
 
 sub UseDef
@@ -180,6 +189,7 @@ sub UseDef
 	my ($self, $def) = @_;
 
 	$self->{def} = $def;
+	return;
 }
 
 sub AddDir
@@ -284,6 +294,7 @@ sub AddDir
 	}
 
 	$self->AddDirResourceFile($reldir);
+	return;
 }
 
 # If the directory's Makefile bears a description string, add a resource file.
@@ -299,6 +310,7 @@ sub AddDirResourceFile
 		if ($mf =~ /^PGAPPICON\s*=\s*(.*)$/m) { $ico = $1; }
 		$self->AddResourceFile($reldir, $desc, $ico);
 	}
+	return;
 }
 
 sub AddResourceFile
@@ -332,6 +344,7 @@ sub AddResourceFile
 		close($i);
 	}
 	$self->AddFile("$dir/win32ver.rc");
+	return;
 }
 
 sub DisableLinkerWarnings
@@ -341,6 +354,7 @@ sub DisableLinkerWarnings
 	$self->{disablelinkerwarnings} .= ','
 	  unless ($self->{disablelinkerwarnings} eq '');
 	$self->{disablelinkerwarnings} .= $warnings;
+	return;
 }
 
 sub Save
@@ -366,6 +380,7 @@ sub Save
 	$self->WriteFiles($f);
 	$self->Footer($f);
 	close($f);
+	return;
 }
 
 sub GetAdditionalLinkerDependencies
diff --git a/src/tools/msvc/Solution.pm b/src/tools/msvc/Solution.pm
index a33e68eccf..8f0b355fc0 100644
--- a/src/tools/msvc/Solution.pm
+++ b/src/tools/msvc/Solution.pm
@@ -75,6 +75,7 @@ sub DeterminePlatform
 	$? >> 8 == 0 or die "cl command not found";
 	$self->{platform} = ($output =~ /^\/favor:<.+AMD64/m) ? 'x64' : 'Win32';
 	print "Detected hardware platform: $self->{platform}\n";
+	return;
 }
 
 # Return 1 if $oldfile is newer than $newfile, or if $newfile doesn't exist.
@@ -112,6 +113,7 @@ sub copyFile
 	}
 	close($i);
 	close($o);
+	return;
 }
 
 sub GenerateFiles
@@ -533,6 +535,7 @@ EOF
 <!ENTITY majorversion "$self->{majorver}">
 EOF
 	close($o);
+	return;
 }
 
 sub GenerateDefFile
@@ -555,6 +558,7 @@ sub GenerateDefFile
 		close($of);
 		close($if);
 	}
+	return;
 }
 
 sub AddProject
@@ -727,6 +731,7 @@ EOF
 EndGlobal
 EOF
 	close($sln);
+	return;
 }
 
 sub GetFakeConfigure
diff --git a/src/tools/msvc/VCBuildProject.pm b/src/tools/msvc/VCBuildProject.pm
index 57b8525f3f..03b890b9b7 100644
--- a/src/tools/msvc/VCBuildProject.pm
+++ b/src/tools/msvc/VCBuildProject.pm
@@ -56,6 +56,7 @@ EOF
  </Configurations>
 EOF
 	$self->WriteReferences($f);
+	return;
 }
 
 sub WriteFiles
@@ -152,6 +153,7 @@ EOF
 	print $f <<EOF;
  </Files>
 EOF
+	return;
 }
 
 sub Footer
@@ -162,6 +164,7 @@ sub Footer
  <Globals/>
 </VisualStudioProject>
 EOF
+	return;
 }
 
 sub WriteConfiguration
@@ -227,6 +230,7 @@ EOF
 	print $f <<EOF;
   </Configuration>
 EOF
+	return;
 }
 
 sub WriteReferences
@@ -239,6 +243,7 @@ sub WriteReferences
 		  "  <ProjectReference ReferencedProjectIdentifier=\"$ref->{guid}\" Name=\"$ref->{name}\" />\n";
 	}
 	print $f " </References>\n";
+	return;
 }
 
 sub GenerateCustomTool
diff --git a/src/tools/msvc/builddoc.pl b/src/tools/msvc/builddoc.pl
index 8ab7385b9e..f6eb73db21 100644
--- a/src/tools/msvc/builddoc.pl
+++ b/src/tools/msvc/builddoc.pl
@@ -107,7 +107,7 @@ sub renamefiles
 		move $f, $nf;
 	}
 	chdir $savedir;
-
+  return;
 }
 
 sub missing
diff --git a/src/tools/msvc/gendef.pl b/src/tools/msvc/gendef.pl
index 9f0cf76fb3..77c3a775b0 100644
--- a/src/tools/msvc/gendef.pl
+++ b/src/tools/msvc/gendef.pl
@@ -20,6 +20,7 @@ sub dumpsyms
 	system("dumpbin /symbols /out:$tmpfile $_ >NUL")
 	  && die "Could not call dumpbin";
 	rename($tmpfile, $symfile);
+	return;
 }
 
 # Given a symbol file path, loops over its contents
@@ -116,6 +117,7 @@ sub extract_syms
 		$def->{ $pieces[6] } = $pieces[3];
 	}
 	close($f);
+	return;
 }
 
 sub writedef
@@ -143,6 +145,7 @@ sub writedef
 		}
 	}
 	close($fh);
+	return;
 }
 
 
diff --git a/src/tools/msvc/vcregress.pl b/src/tools/msvc/vcregress.pl
index a74adbaf99..4dc051aa62 100644
--- a/src/tools/msvc/vcregress.pl
+++ b/src/tools/msvc/vcregress.pl
@@ -111,6 +111,7 @@ sub installcheck
 	system(@args);
 	my $status = $? >> 8;
 	exit $status if $status;
+	return;
 }
 
 sub check
@@ -132,6 +133,7 @@ sub check
 	system(@args);
 	my $status = $? >> 8;
 	exit $status if $status;
+	return;
 }
 
 sub ecpgcheck
@@ -157,6 +159,7 @@ sub ecpgcheck
 	system(@args);
 	$status = $? >> 8;
 	exit $status if $status;
+	return;
 }
 
 sub isolationcheck
@@ -173,6 +176,7 @@ sub isolationcheck
 	system(@args);
 	my $status = $? >> 8;
 	exit $status if $status;
+	return;
 }
 
 sub tap_check
@@ -224,6 +228,7 @@ sub bincheck
 		$mstat ||= $status;
 	}
 	exit $mstat if $mstat;
+	return;
 }
 
 sub taptest
@@ -244,6 +249,7 @@ sub taptest
 	InstallTemp();
 	my $status = tap_check(@args);
 	exit $status if $status;
+	return;
 }
 
 sub mangle_plpython3
@@ -365,6 +371,7 @@ sub plcheck
 	}
 
 	chdir "$topdir";
+	return;
 }
 
 sub subdircheck
@@ -413,6 +420,7 @@ sub subdircheck
 	print join(' ', @args), "\n";
 	system(@args);
 	chdir "..";
+	return;
 }
 
 sub contribcheck
@@ -434,6 +442,7 @@ sub contribcheck
 		$mstat ||= $status;
 	}
 	exit $mstat if $mstat;
+	return;
 }
 
 sub modulescheck
@@ -447,6 +456,7 @@ sub modulescheck
 		$mstat ||= $status;
 	}
 	exit $mstat if $mstat;
+	return;
 }
 
 sub recoverycheck
@@ -457,6 +467,7 @@ sub recoverycheck
 	my $dir    = "$topdir/src/test/recovery";
 	my $status = tap_check($dir);
 	exit $status if $status;
+	return;
 }
 
 # Run "initdb", then reconfigure authentication.
@@ -501,6 +512,7 @@ sub generate_db
 	system('createdb', quote_system_arg($dbname));
 	my $status = $? >> 8;
 	exit $status if $status;
+	return;
 }
 
 sub upgradecheck
@@ -586,6 +598,7 @@ sub upgradecheck
 		print "dumps not identical!\n";
 		exit(1);
 	}
+	return;
 }
 
 sub fetchRegressOpts
@@ -680,6 +693,7 @@ sub InstallTemp
 		Install("$tmp_installdir", "all", $config);
 	}
 	$ENV{PATH} = "$tmp_installdir/bin;$ENV{PATH}";
+	return;
 }
 
 sub usage
diff --git a/src/tools/pginclude/pgcheckdefines b/src/tools/pginclude/pgcheckdefines
index c547df45ea..4edf7fc56e 100755
--- a/src/tools/pginclude/pgcheckdefines
+++ b/src/tools/pginclude/pgcheckdefines
@@ -297,4 +297,6 @@ sub checkit
 	print "$file references $symbol, defined in @places\n";
 
 	# print "includes: @includes\n";
+
+	return;
 }
diff --git a/src/tools/pgindent/pgindent b/src/tools/pgindent/pgindent
index fc616e7a08..2d81672e15 100755
--- a/src/tools/pgindent/pgindent
+++ b/src/tools/pgindent/pgindent
@@ -93,6 +93,8 @@ sub check_indent
 		  "You appear to have GNU indent rather than BSD indent.\n";
 		exit 1;
 	}
+
+	return;
 }
 
 
@@ -162,6 +164,7 @@ sub process_exclude
 		}
 		close($eh);
 	}
+	return;
 }
 
 
@@ -189,6 +192,7 @@ sub write_source
 	  || die "cannot open file \"$source_filename\": $!\n";
 	print $src_fh $source;
 	close($src_fh);
+	return;
 }
 
 
@@ -316,6 +320,7 @@ sub diff
 		  . $pre_fh->filename . " "
 		  . $post_fh->filename
 		  . " >&2");
+	return;
 }
 
 
@@ -361,6 +366,7 @@ sub run_build
 	$ENV{PGINDENT} = abs_path('pg_bsd_indent');
 
 	chdir $save_dir;
+	return;
 }
 
 
@@ -382,6 +388,7 @@ sub build_clean
 
 	system("rm -rf src/tools/pgindent/pg_bsd_indent");
 	system("rm -f src/tools/pgindent/tmp_typedefs.list");
+	return;
 }
 
 
diff --git a/src/tools/pgperlcritic/perlcriticrc b/src/tools/pgperlcritic/perlcriticrc
index 1059002ad5..6b0ba62916 100644
--- a/src/tools/pgperlcritic/perlcriticrc
+++ b/src/tools/pgperlcritic/perlcriticrc
@@ -6,9 +6,17 @@
 #
 #####################################################################
 
-severity = 5
+severity = 4
 
 theme = core
 
 # allow octal constants with leading zeros
 [-ValuesAndExpressions::ProhibitLeadingZeros]
+
+[-InputOutput::RequireBriefOpen]
+[-Subroutines::RequireArgUnpacking]
+[-Variables::RequireLocalizedPunctuationVars]
+
+[TestingAndDebugging::ProhibitNoWarnings]
+allow = once
+
diff --git a/src/tools/version_stamp.pl b/src/tools/version_stamp.pl
index 392fd4ae54..499e3deb3a 100755
--- a/src/tools/version_stamp.pl
+++ b/src/tools/version_stamp.pl
@@ -141,4 +141,5 @@ sub sed_file
 	  or die "mv failed: $?";
 
 	$fixedfiles .= "\t$filename\n";
+	return;
 }
-- 
2.17.0