[PATCH 03/14] daemon+watch: fix localization of %SIG for non-signalfd users

[Eric Wong <e@80x24.org>]

It turns out "local" did not take effect in the way we used it:
  http://nntp.perl.org/group/perl.perl5.porters/258784
  <CAHhgV8hPbcmkzWizp6Vijw921M5BOXixj4+zTh3nRS9vRBYk8w@mail.gmail.com>

Fortunately, none of the old use cases seem affected, unlike the
previous lei change to ensure consistent SIGPIPE handling.
---
 lib/PublicInbox/Daemon.pm | 4 ++--
 script/public-inbox-watch | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/PublicInbox/Daemon.pm b/lib/PublicInbox/Daemon.pm
index 4b738b7c..f5543c85 100644
--- a/lib/PublicInbox/Daemon.pm
+++ b/lib/PublicInbox/Daemon.pm
@@ -514,7 +514,7 @@ EOF
 		CHLD => \&reap_children,
 	};
 	my $sigfd = PublicInbox::Sigfd->new($sig, 0);
-	local %SIG = (%SIG, %$sig) if !$sigfd;
+	local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
 	PublicInbox::DS::sig_setmask($oldset) if !$sigfd;
 	while (1) { # main loop
 		my $n = scalar keys %pids;
@@ -628,7 +628,7 @@ sub daemon_loop ($$$$) {
 		PublicInbox::Listener->new($_, $tls_cb || $post_accept)
 	} @listeners;
 	my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
-	local %SIG = (%SIG, %$sig) if !$sigfd;
+	local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
 	if (!$sigfd) {
 		# wake up every second to accept signals if we don't
 		# have signalfd or IO::KQueue:
diff --git a/script/public-inbox-watch b/script/public-inbox-watch
index 10c7cd6f..86349d71 100755
--- a/script/public-inbox-watch
+++ b/script/public-inbox-watch
@@ -58,7 +58,7 @@ if ($watch) {
 	PublicInbox::DS::requeue($scan) if $do_scan;
 
 	my $sigfd = PublicInbox::Sigfd->new($sig, SFD_NONBLOCK);
-	local %SIG = (%SIG, %$sig) if !$sigfd;
+	local @SIG{keys %$sig} = values(%$sig) unless $sigfd;
 	if (!$sigfd) {
 		PublicInbox::DS::sig_setmask($oldset);
 		PublicInbox::DS->SetLoopTimeout(1000);