commit fe43306c43cd28fcab948f67c7bb89af3a011cbe
author Cristy <urban-warrior@imagemagick.org> Mon Jan 22 08:05:42 2018 -0500
committer Cristy <urban-warrior@imagemagick.org> Mon Jan 22 08:05:42 2018 -0500
tree 0fa279e2717949084cb6251cac20beff3e0d04d8
parent c4b013e159205cb4849240e9773984cf90e0a913

Eliminate undefined-shift
Credit OSS Fuzz

coders/dpx.c

diff --git a/coders/dpx.c b/coders/dpx.c
index 6c73c3d..6bb5722 100644
--- a/coders/dpx.c
+++ b/coders/dpx.c
@@ -1158,7 +1158,7 @@
     SetPrimaryChromaticity((DPXColorimetric)
       dpx.image.image_element[n].colorimetric,&image->chromaticity);
     image->depth=dpx.image.image_element[n].bit_size;
-    if (image->depth > 32)
+    if ((image->depth == 0) || (image->depth > 32))
       ThrowReaderException(CorruptImageError,"ImproperImageHeader");
     samples_per_pixel=1;
     quantum_type=GrayQuantum;