Fix #5019: autodoc: crashed by Form Feed Character

1 files changed, 6 insertions, 1 deletions

diff --git a/sphinx/pycode/parser.py b/sphinx/pycode/parser.py
index 5c4291d3d..40334f2e3 100644
--- a/sphinx/pycode/parser.py
+++ b/sphinx/pycode/parser.py
@@ -34,6 +34,11 @@ else:
     ASSIGN_NODES = (ast.Assign)
 
 
+def filter_whitespace(code):
+    # type: (unicode) -> unicode
+    return code.replace('\f', ' ')  # replace FF (form feed) with whitespace
+
+
 def get_assign_targets(node):
     # type: (ast.AST) -> List[ast.expr]
     """Get list of targets from Assign and AnnAssign node."""
@@ -466,7 +471,7 @@ class Parser(object):
 
     def __init__(self, code, encoding='utf-8'):
         # type: (unicode, unicode) -> None
-        self.code = code
+        self.code = filter_whitespace(code)
         self.encoding = encoding
         self.comments = {}          # type: Dict[Tuple[unicode, unicode], unicode]
         self.deforders = {}         # type: Dict[unicode, int]