From 28fd74742bd03647a5f772a508ef17f6cd8c2bf4 Mon Sep 17 00:00:00 2001
From: wiredfool <eric-github@soroos.net>
Date: Thu, 4 Feb 2016 06:57:57 -0800
Subject: [PATCH] input parameter filtering

---
 Tests/test_image_resample.py | 20 +++++++++++++++++++-
 _imaging.c                   |  4 ++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/_imaging.c b/_imaging.c
index 3f86938..7bda38a 100644
--- a/_imaging.c
+++ b/_imaging.c
@@ -1532,6 +1532,10 @@ _resize(ImagingObject* self, PyObject* args)
 
     imIn = self->image;
 
+    if (xsize < 1 || ysize < 1) {
+        return ImagingError_ValueError("height and width must be > 0");
+    }
+
     imOut = ImagingNew(imIn->mode, xsize, ysize);
     if (imOut)
         (void) ImagingResize(imOut, imIn, filter);