Infinite recursion in the tokeniser when showing warnings #99891
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…warnings Signed-off-by: Pablo Galindo <pablogsal@gmail.com>
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…gs (GH-99893) Automerge-Triggered-By: GH:pablogsal
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…howing warnings (pythonGH-99893) Automerge-Triggered-By: GH:pablogsal. (cherry picked from commit 417206a) Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>
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* main: (112 commits) pythongh-99894: Ensure the local names don't collide with the test file in traceback suggestion error checking (python#99895) pythongh-99612: Fix PyUnicode_DecodeUTF8Stateful() for ASCII-only data (pythonGH-99613) Doc: Add summary line to isolation_level & autocommit sqlite3.connect params (python#99917) pythonGH-98906 ```re``` module: ```search() vs. match()``` section should mention ```fullmatch()``` (pythonGH-98916) pythongh-89189: More compact range iterator (pythonGH-27986) bpo-47220: Document the optional callback parameter of weakref.WeakMethod (pythonGH-25491) pythonGH-99905: Fix output of misses in summarize_stats.py execution counts (pythonGH-99906) pythongh-99845: PEP 670: Convert PyObject macros to functions (python#99850) pythongh-99845: Use size_t type in __sizeof__() methods (python#99846) pythonGH-99877) Fix typo in exception message in `multiprocessing.pool` (python#99900) pythongh-87092: move all localsplus preparation into separate function called from assembler stage (pythonGH-99869) pythongh-99891: Fix infinite recursion in the tokenizer when showing warnings (pythonGH-99893) pythongh-99824: Document that sqlite3.connect implicitly open a transaction if autocommit=False (python#99825) pythonGH-81057: remove static state from suggestions.c (python#99411) Improve zip64 limit error message (python#95892) pythongh-98253: Break potential reference cycles in external code worsened by typing.py lru_cache (python#98591) pythongh-99127: Allow some features of syslog to the main interpreter only (pythongh-99128) pythongh-82836: fix private network check (python#97733) Docs: improve accuracy of socketserver reference (python#24767) ...
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Turns out that showing warnings in the tokenizer is quite tricky because in the process of showing the warning we need to fetch the encoding which needs to tokenize the first two lines and if the warning is there that leads to an infinite loop. Check for instance with a file contaning:
Notice that this only happens when tokenizing files.
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