BUG: missing error on name without leading /

pypdf/annotations/_markup_annotations.py

@@ -165,8 +165,8 @@ def __init__(
                 ),
                 NameObject("/LE"): ArrayObject(
                     [
-                        NameObject(None),
-                        NameObject(None),
+                        NameObject("/None"),
+                        NameObject("/None"),
                     ]
                 ),
                 NameObject("/IC"): ArrayObject(
@@ -290,7 +290,7 @@ def __init__(
                 NameObject("/Type"): NameObject("/Annot"),
                 NameObject("/Subtype"): NameObject("/Polygon"),
                 NameObject("/Vertices"): ArrayObject(coord_list),
-                NameObject("/IT"): NameObject("PolygonCloud"),
+                NameObject("/IT"): NameObject("/PolygonCloud"),
                 NameObject("/Rect"): RectangleObject(_get_bounding_rectangle(vertices)),
             }
         )
@@ -325,9 +325,9 @@ def __init__(
 
         border_arr: BorderArrayType
         if border is not None:
-            border_arr = [NameObject(n) for n in border[:3]]
+            border_arr = [NumberObject(n) for n in border[:3]]
             if len(border) == 4:
-                dash_pattern = ArrayObject([NameObject(n) for n in border[3]])
+                dash_pattern = ArrayObject([NumberObject(n) for n in border[3]])
                 border_arr.append(dash_pattern)
         else:
             border_arr = [NumberObject(0)] * 3

pypdf/generic/_base.py

@@ -43,7 +43,12 @@
     read_until_regex,
     str_,
 )
-from ..errors import STREAM_TRUNCATED_PREMATURELY, PdfReadError, PdfStreamError
+from ..errors import (
+    STREAM_TRUNCATED_PREMATURELY,
+    PdfReadError,
+    PdfStreamError,
+    PyPdfError,
+)
 
 __author__ = "Mathieu Fenniak"
 __author_email__ = "biziqe@mathieu.fenniak.net"
@@ -589,7 +594,7 @@ def write_to_stream(
     def renumber(self) -> bytes:
         out = self[0].encode("utf-8")
         if out != b"/":
-            logger_warning(f"Incorrect first char in NameObject:({self})", __name__)
+            raise PyPdfError(f"Incorrect first char in NameObject:({self})", __name__)
         for c in self[1:]:
             if c > "~":
                 for x in c.encode("utf-8"):

tests/test_generic.py

@@ -7,7 +7,7 @@
 
 from pypdf import PdfMerger, PdfReader, PdfWriter
 from pypdf.constants import CheckboxRadioButtonAttributes
-from pypdf.errors import PdfReadError, PdfStreamError
+from pypdf.errors import PdfReadError, PdfStreamError, PyPdfError
 from pypdf.generic import (
     AnnotationBuilder,
     ArrayObject,
@@ -218,9 +218,11 @@ def test_name_object(caplog):
 
     caplog.clear()
     b = BytesIO()
-    NameObject("hello").write_to_stream(b)
-    assert bytes(b.getbuffer()) == b"hello"
-    assert "Incorrect first char" in caplog.text
+    try:
+        NameObject("hello").write_to_stream(b)
+        pytest.fail("Corrupted name object")
+    except PyPdfError:
+        pass
 
     caplog.clear()
     b = BytesIO()