From 4d7b630b33c58e215ea9938bb1df26d745f73523 Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@gmail.com>
Date: Wed, 18 Nov 2015 01:18:01 +1100
Subject: [PATCH] Catch OverflowError in SpiderImagePlugin

---
 PIL/SpiderImagePlugin.py    |   2 ++
 Tests/images/invalid.spider | Bin 0 -> 167 bytes
 Tests/test_file_spider.py   |   5 +++++
 3 files changed, 7 insertions(+)
 create mode 100644 Tests/images/invalid.spider

diff --git a/PIL/SpiderImagePlugin.py b/PIL/SpiderImagePlugin.py
index 6344a1540..0ce63002b 100644
--- a/PIL/SpiderImagePlugin.py
+++ b/PIL/SpiderImagePlugin.py
@@ -50,6 +50,8 @@ def isInt(f):
             return 0
     except ValueError:
         return 0
+    except OverflowError:
+        return 0
 
 iforms = [1, 3, -11, -12, -21, -22]
 
diff --git a/Tests/images/invalid.spider b/Tests/images/invalid.spider
new file mode 100644
index 0000000000000000000000000000000000000000..c6b024d6ebe7a46afc35468a71577345dbbd34bb
GIT binary patch
literal 167
zcmez0z`(#D#KjCG=ZB=H04Y%*cKHAQ$$u~aa%TQNlXm8e@ys-ajFofzf*DquPv0H^
zl1%b;cVXyYRr3HU;w<opEC$jZKqEX}x}D5619H+mT^vI+&hNc=nzungz%?+5Gi<^2
z1V#stdXWUCzuO+<8#il<M^9JZ)6$UKQg?uXAwu8-+YED^D=rr&bSGN4i#?Grc@I<$
E0B4LnF8}}l

literal 0
HcmV?d00001

diff --git a/Tests/test_file_spider.py b/Tests/test_file_spider.py
index 1ddecd365..8bd648e78 100644
--- a/Tests/test_file_spider.py
+++ b/Tests/test_file_spider.py
@@ -80,6 +80,11 @@ class TestImageSpider(PillowTestCase):
         # Assert
         self.assertEqual(ret, 0)
 
+    def test_invalid_file(self):
+        invalid_file = "Tests/images/invalid.spider"
+        
+        self.assertRaises(IOError, lambda: Image.open(invalid_file))
+
 
 if __name__ == '__main__':
     unittest.main()