gh-158445: Detect invalid UCS4 characters in debug mode - #158502
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In debug mode, PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND) and PyUnicodeWriter_WriteUCS4() now raise a SystemError if a character is not in range [U+0000; U+10ffff], instead of creating an invalid str object. In release mode, PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND) raises a SystemError if the size is 1. * In debug mode, unicode_char() no longer fails with an assertion error if the character is invalid. Instead, raise SystemError. * Add tests on invalid UCS-4 characters. * Add _testinternalcapi._Py_MAX_UNICODE. * Add unicode_invalid_character() helper function.
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@serhiy-storchaka: Since you prefer to make these 2 functions slower, I propose a different PR to:
Would you mind to review it? |
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Merged. Thanks for the review. |
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In debug mode, PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND) and PyUnicodeWriter_WriteUCS4() now raise a SystemError if a character is not in range [U+0000; U+10ffff], instead of creating an invalid str object.
In release mode, PyUnicode_FromKindAndData(PyUnicode_4BYTE_KIND) raises a SystemError if the size is 1.