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-rw-r--r--lib/PublicInbox/Syscall.pm2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/PublicInbox/Syscall.pm b/lib/PublicInbox/Syscall.pm
index a1f53235..5ff1d65f 100644
--- a/lib/PublicInbox/Syscall.pm
+++ b/lib/PublicInbox/Syscall.pm
@@ -224,7 +224,7 @@ sub epoll_ctl_mod8 {
 # epoll_wait wrapper
 # ARGS: (epfd, maxevents, timeout (milliseconds), arrayref)
 #  arrayref: values modified to be [$fd, $event]
-our $epoll_wait_events;
+our $epoll_wait_events = '';
 our $epoll_wait_size = 0;
 sub epoll_wait_mod4 {
         my ($epfd, $maxevents, $timeout_msec, $events) = @_;