t/sigfd: add diagnostic for occasional FreeBSD failure

Not 100% sure what's going on, here...

diff --git a/t/sigfd.t b/t/sigfd.t
index bb854147023d8eb522c2a0ddbe5d88ab6032d7aa..a1ab222c0c4daeaeb5ead02f8f2f35ad820782c9 100644 (file)
--- a/t/sigfd.t
+++ b/t/sigfd.t
@@ -47,7 +47,8 @@ SKIP: {
                kill('HUP', $$) or die "kill $!";
                PublicInbox::DS->SetPostLoopCallback(sub {}); # loop once
                PublicInbox::DS->EventLoop;
-               is($hit->{HUP}->{sigfd}, 2, 'HUP sigfd fired in event loop');
+               is($hit->{HUP}->{sigfd}, 2, 'HUP sigfd fired in event loop') or
+                       diag explain($hit); # sometimes fails on FreeBSD 11.x
                kill('TERM', $$) or die "kill $!";
                kill('HUP', $$) or die "kill $!";
                PublicInbox::DS->EventLoop;