gh-111089: Add cache to PyUnicode_AsUTF8() for embedded NUL#111587
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vstinner wants to merge 9 commits intopython:mainfrom
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gh-111089: Add cache to PyUnicode_AsUTF8() for embedded NUL#111587vstinner wants to merge 9 commits intopython:mainfrom
vstinner wants to merge 9 commits intopython:mainfrom
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Add PyASCIIObject.state.embed_null member to Python str objects. It is used as a cache by PyUnicode_AsUTF8() to only check once if a string contains a null character. Strings created by PyUnicode_FromString() initializes embed_null since the string cannot contain a null character.
Global static strings now also initialize the embed_null member. The chr(0) singleton ("\0" string) is the only static string which contains a null character.