python
diff --git a/‎Lib/test/datetimetester.py‎
Lines changed: 3 additions & 0 deletions b/‎Lib/test/datetimetester.py‎
Lines changed: 3 additions & 0 deletions
@@ -2119,6 +2119,9 @@ def test_fromisoformat_fails(self):
             '٢025-03-09',       # Unicode characters
             '2009\ud80002\ud80028',     # Separators are surrogate codepoints
         ]
+        if not issubclass(self.theclass, datetime):
+            # 9 characters, 10 UTF-8 bytes; exercise the C parser's 10-byte path.
+            bad_strs.append('20200101\u00e9')
 
         for bad_str in bad_strs:
             with self.assertRaises(ValueError):
Original file line number	Diff line number	Diff line change
`@@ -2119,6 +2119,9 @@ def test_fromisoformat_fails(self):`
`2119`	`2119`	`'٢025-03-09', # Unicode characters`
`2120`	`2120`	`'2009\ud80002\ud80028', # Separators are surrogate codepoints`
`2121`	`2121`	`]`
	`2122`	`+ if not issubclass(self.theclass, datetime):`
	`2123`	`+ # 9 characters, 10 UTF-8 bytes; exercise the C parser's 10-byte path.`
	`2124`	`+ bad_strs.append('20200101\u00e9')`
`2122`	`2125`
`2123`	`2126`	`for bad_str in bad_strs:`
`2124`	`2127`	`with self.assertRaises(ValueError):`