gh-146250: Fix memory leak in re-initialization of SyntaxError#146251
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bkap123 wants to merge 3 commits intopython:mainfrom
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gh-146250: Fix memory leak in re-initialization of SyntaxError#146251bkap123 wants to merge 3 commits intopython:mainfrom
SyntaxError#146251bkap123 wants to merge 3 commits intopython:mainfrom
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Added `Py_XDECREF`/`Py_XSETREF` to avoid a memory leak when calling `SyntaxError.__init__`.
aisk
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Mar 21, 2026
Misc/NEWS.d/next/Core_and_Builtins/2026-03-21-11-55-16.gh-issue-146250.ahl3O2.rst
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picnixz
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Mar 21, 2026
| self.assertGreater(len(output), 0) # At minimum, should not hang | ||
| self.assertIn(b"MemoryError", output) | ||
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| # gh-146250: memory leak with re-initialization of SyntaxError |
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Put this comment in the test instead above it.
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| Py_XDECREF(self->filename); | ||
| Py_XDECREF(self->lineno); | ||
| Py_XDECREF(self->offset); | ||
| Py_XDECREF(self->text); |
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I think we should instead create temp vara and use XSETREF, as we do for AttributeError. It would be much cleaner.
Co-authored-by: AN Long <aisk@users.noreply.github.com> Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
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Sorry about the Py_CLEAR suggestion but I think creating new variables would be cleaner. |
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What's wrong with using |
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I think it is just better to hold temp vars and use XSETREF like in |
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Added
Py_XDECREF/Py_XSETREFto avoid a memory leak when callingSyntaxError.__init__.SyntaxError.__init__memory leak on re-initialization #146250