Issue #26754: PyUnicode_FSDecoder() accepted a filename argument encoded as

an iterable of integers. Now only strings and byte-like objects are accepted.

1 files changed, 6 insertions, 0 deletions

diff --git a/Lib/test/test_symtable.py b/Lib/test/test_symtable.py
index e5e7b83d21..c5d7facfdb 100644
--- a/Lib/test/test_symtable.py
+++ b/Lib/test/test_symtable.py
@@ -157,6 +157,12 @@ class SymtableTest(unittest.TestCase):
                 self.fail("no SyntaxError for %r" % (brokencode,))
         checkfilename("def f(x): foo)(")  # parse-time
         checkfilename("def f(x): global x")  # symtable-build-time
+        symtable.symtable("pass", b"spam", "exec")
+        with self.assertRaises(TypeError):
+            symtable.symtable("pass", bytearray(b"spam"), "exec")
+        symtable.symtable("pass", memoryview(b"spam"), "exec")
+        with self.assertRaises(TypeError):
+            symtable.symtable("pass", list(b"spam"), "exec")
 
     def test_eval(self):
         symbols = symtable.symtable("42", "?", "eval")