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bpo-46542: test_lib2to3 uses support.infinite_recursion() (GH-31035)

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* bpo-46542: test_lib2to3 uses support.infinite_recursion()

Fix a Python crash in test_lib2to3 when using Python built in debug
mode: limit the recursion limit.

The test_all_project_files() test of test_lib2to3 now uses the
test.support.infinite_recursion() context manager when processing the
infinite_recursion.py file to prevent a crash when Python is built in
debug mode.

The two test_all_project_files() tests now use subTest() and log the
refactored/parsed filename (if test_lib2to3 is run in verbose mode).

* Update Lib/lib2to3/tests/data/infinite_recursion.py

Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>

Co-authored-by: Łukasz Langa <lukasz@langa.pl>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>
This commit is contained in:
Victor Stinner 2022-01-31 18:46:09 +01:00 • committed by GitHub
parent 768569325a
commit ee0ac328d3
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5 changed files with 47 additions and 23 deletions
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4
Lib/lib2to3/tests/data/infinite_recursion.py
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@ -1,5 +1,5 @@
# This file is used to verify that 2to3 falls back to a slower, iterative pattern matching
# scheme in the event that the faster recursive system fails due to infinite recursion.
# Verify that 2to3 falls back from the recursive pattern matching scheme to a
# slower, iterative scheme in the event of a RecursionError.
from ctypes import *
STRING = c_char_p