René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"`patchcheck.py` raises `SystemError` on `main`","articleBody":"# Bug report\r\n\r\nFollowing #105801, running `python Tools/patchcheck/patchcheck.py` now results in `SystemError` being raised.\r\n\r\n# To reproduce\r\n\r\n1. Make any change to a `.py` file, e.g.:\r\n\r\n```diff\r\n--- a/Lib/test/test_fstring.py\r\n+++ b/Lib/test/test_fstring.py\r\n@@ -19,6 +19,7 @@\r\n\r\n a_global = 'global variable'\r\n\r\n+\r\n```\r\n\r\n2. Run `python Tools/patchcheck/patchcheck.py`:\r\n\r\n```\r\nC:\\Users\\alexw\\coding\\cpython\u003epython Tools/patchcheck/patchcheck.py\r\nRunning Release|x64 interpreter...\r\nGetting base branch for PR ... upstream/main\r\nGetting the list of files that have been added/changed ... 1 file\r\nFixing Python file whitespace ... Traceback (most recent call last):\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\patchcheck.py\", line 325, in \u003cmodule\u003e\r\n    main()\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\patchcheck.py\", line 293, in main\r\n    normalize_whitespace(python_files)\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\patchcheck.py\", line 35, in call_fxn\r\n    result = fxn(*args, **kwargs)\r\n             ^^^^^^^^^^^^^^^^^^^^\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\patchcheck.py\", line 188, in normalize_whitespace\r\n    and reindent.check(os.path.join(SRCDIR, path))\r\n        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\reindent.py\", line 138, in check\r\n    if r.run():\r\n       ^^^^^^^\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Tools\\patchcheck\\reindent.py\", line 203, in run\r\n    for _token in tokens:\r\n  File \"C:\\Users\\alexw\\coding\\cpython\\Lib\\tokenize.py\", line 537, in _generate_tokens_from_c_tokenizer\r\n    for info in it:\r\nSystemError: Negative size passed to PyUnicode_New\r\n```\r\n\r\nThis failure was visible on the Azure Pipelines job on the PR FYI: https://dev.azure.com/Python/cpython/_build/results?buildId=130389\u0026view=logs\u0026j=256d7e09-002a-52d7-8661-29ee3960640e\u0026t=3d7276d3-4e8d-5309-55ad-fb0b172d9925\r\n\r\n# Your environment\r\n\r\n```\r\nPython 3.13.0a0 (heads/main:c5111aec2b, Jun 15 2023, 10:53:37) [MSC v.1932 64 bit (AMD64)] on win32\r\n```\r\n\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-105828\n* gh-105832\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/AlexWaygood","@type":"Person","name":"AlexWaygood"},"datePublished":"2023-06-15T10:02:12.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/105820/cpython/issues/105820"}