Backport LICENSE.

LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2004-2016  Yusuke Shinyama <yusuke at shinyama dot jp>
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or
+sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

MANIFEST.in

@@ -1,4 +1,5 @@
 include Makefile
+include LICENSE
 include *.md
 include *.py
 graft docs

pdfminer/pdftypes.py

@@ -9,6 +9,7 @@ from .ccitt import ccittfaxdecode
 from .psparser import PSException
 from .psparser import PSObject
 from .psparser import LIT
+from .psparser import STRICT
 from . import settings
 from .utils import apply_png_predictor
 from .utils import isnumber
@@ -229,7 +230,10 @@ class PDFStream(PDFObject):
         if not isinstance(filters, list):
             filters = [filters]
         if not isinstance(params, list):
+            # Make sure the parameters list is the same as filters.
             params = [params] * len(filters)
+        if STRICT and len(params) != len(filters):
+            raise PDFException("Parameters len filter mismatch")
         return zip(filters, params)
 
     def decode(self):