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gh-157710: Add more asserts to internal PyUnicode operations - #159033
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- `_Py*UnicodeObject_CAST` macros assert they have the right bits for the shape - `_PyUnicode_IsModifiable` & `_PyUnicodeWriter_CanWrite` assert that UTF-8 storage hasn't been allocated yet
vstinner
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Oct 8, 2026
| assert(!_Py_IsImmortal(buffer)); | ||
| assert(PyUnicode_IS_COMPACT_ASCII(buffer) | ||
| || _PyUnicode_UTF8(buffer) == NULL | ||
| || _PyUnicode_UTF8(buffer) == PyUnicode_DATA(buffer)); |
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I would prefer moving _PyUnicode_HAS_UTF8_MEMORY() static inline function to pycore_unicodeobject.h and just test:
assert(!_PyUnicode_HAS_UTF8_MEMORY(buffer);
Co-authored-by: Victor Stinner <vstinner@python.org>
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Turns out I broke a private debug helper. Added a test so it doesn't happen again. |
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Add checks based on the review on #159028:
_Py*UnicodeObject_CASTmacros assert they have the right bits for the shape(this means that
_PyUnicode_UTF8asserts it's not called on a compact ASCII object.)_PyUnicode_IsModifiable&_PyUnicodeWriter_CanWriteassert that UTF-8 storage hasn't been allocated yetMove
_PyUnicode_UTF8to the internal header for use in_PyUnicodeWriter_CanWrite