--- a/Lib/test/test_fstring.py+++ b/Lib/test/test_fstring.py@@ -19,6 +19,7 @@ a_global = 'global variable'+

C:\Users\alexw\coding\cpython>python Tools/patchcheck/patchcheck.pyRunning Release|x64 interpreter...Getting base branch for PR ... upstream/mainGetting the list of files that have been added/changed ... 1 fileFixing Python file whitespace ... Traceback (most recent call last):  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\patchcheck.py", line 325, in <module>    main()  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\patchcheck.py", line 293, in main    normalize_whitespace(python_files)  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\patchcheck.py", line 35, in call_fxn    result = fxn(*args, **kwargs)             ^^^^^^^^^^^^^^^^^^^^  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\patchcheck.py", line 188, in normalize_whitespace    and reindent.check(os.path.join(SRCDIR, path))        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\reindent.py", line 138, in check    if r.run():       ^^^^^^^  File "C:\Users\alexw\coding\cpython\Tools\patchcheck\reindent.py", line 203, in run    for _token in tokens:  File "C:\Users\alexw\coding\cpython\Lib\tokenize.py", line 537, in _generate_tokens_from_c_tokenizer    for info in it:SystemError: Negative size passed to PyUnicode_New

Python 3.13.0a0 (heads/main:c5111aec2b, Jun 15 2023, 10:53:37) [MSC v.1932 64 bit (AMD64)] on win32