fix: make sure it is really bytes in font.decode

pdfminer/pdfdevice.py

@@ -168,6 +168,10 @@ def render_string_horizontal(
                 x -= obj * dxscale
                 needcharspace = True
             else:
+                if isinstance(obj, str):
+                    obj = utils.make_compat_bytes(obj)
+                if not isinstance(obj, bytes):
+                    continue
                 for cid in font.decode(obj):
                     if needcharspace:
                         x += charspace
@@ -208,6 +212,10 @@ def render_string_vertical(
                 y -= obj * dxscale
                 needcharspace = True
             else:
+                if isinstance(obj, str):
+                    obj = utils.make_compat_bytes(obj)
+                if not isinstance(obj, bytes):
+                    continue
                 for cid in font.decode(obj):
                     if needcharspace:
                         y += charspace

pdfminer/pdffont.py

@@ -899,8 +899,8 @@ def is_vertical(self) -> bool:
     def is_multibyte(self) -> bool:
         return False
 
-    def decode(self, bytes: bytes) -> Iterable[int]:
-        return bytearray(bytes)  # map(ord, bytes)
+    def decode(self, data: bytes) -> Iterable[int]:
+        return data
 
     def get_ascent(self) -> float:
         """Ascent above the baseline, in text space units"""
@@ -1173,8 +1173,8 @@ def is_vertical(self) -> bool:
     def is_multibyte(self) -> bool:
         return True
 
-    def decode(self, bytes: bytes) -> Iterable[int]:
-        return self.cmap.decode(bytes)
+    def decode(self, data: bytes) -> Iterable[int]:
+        return self.cmap.decode(data)
 
     def char_disp(self, cid: int) -> Union[float, Tuple[Optional[float], float]]:
         """Returns an integer for horizontal fonts, a tuple for vertical fonts."""