Warn and drop soft mask if an image has both Mask and SMask set.

1 files changed, 6 insertions, 0 deletions

diff --git a/mupdf/pdf_image.c b/mupdf/pdf_image.c
index 32cb1b4b..77fdafaf 100644
--- a/mupdf/pdf_image.c
+++ b/mupdf/pdf_image.c
@@ -335,6 +335,12 @@ pdf_loadimage(pdf_image **imgp, pdf_xref *xref, fz_obj *dict)
 		else
 		{
 			pdf_logimage("has mask\n");
+			if (mask)
+			{
+				fz_warn("image has both a mask and a soft mask. ignoring the soft mask.");
+				pdf_dropimage(mask);
+				mask = nil;
+			}
 			error = pdf_loadimage(&mask, xref, obj);
 			if (error)
 				return error;