From 4eba71fb26cd9b6bf373bd457dcede9a3b426879 Mon Sep 17 00:00:00 2001
From: Ivan Kuchin <tadump+git@gmail.com>
Date: Sun, 22 Jul 2018 15:04:43 +0200
Subject: [PATCH] ignore segmentation fault for pngout <= 20150920, resolves
 #158

---
 lib/image_optim/worker/pngout.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/image_optim/worker/pngout.rb b/lib/image_optim/worker/pngout.rb
index 9823ab03..ffa69d04 100644
--- a/lib/image_optim/worker/pngout.rb
+++ b/lib/image_optim/worker/pngout.rb
@@ -32,6 +32,10 @@ def optimize(src, dst)
           #{dst}
         ]
         execute(:pngout, *args) && optimized?(src, dst)
+      rescue SignalException => e
+        raise unless Signal.list.key(e.signo) == 'SEGV'
+        raise unless resolve_bin!(:pngout).version <= '20150920'
+        warn "pngout caused Segmentation fault for #{src}"
       end
     end
   end