PyUnicode_KIND() uses _Py_RVALUE() (#100060)

vstinner · web-flow · commit abbe4482ab91 · 2022-12-06T23:40:05.000+01:00
The PyUnicode_KIND() macro is modified to use _Py_RVALUE(), so it can
no longer be used as a l-value.
diff --git a/Include/cpython/unicodeobject.h b/Include/cpython/unicodeobject.h
@@ -231,7 +231,7 @@ enum PyUnicode_Kind {
 // new compiler warnings on "kind < PyUnicode_KIND(str)" (compare signed and
 // unsigned numbers) where kind type is an int or on
 // "unsigned int kind = PyUnicode_KIND(str)" (cast signed to unsigned).
-#define PyUnicode_KIND(op) (_PyASCIIObject_CAST(op)->state.kind)
+#define PyUnicode_KIND(op) _Py_RVALUE(_PyASCIIObject_CAST(op)->state.kind)
 
 /* Return a void pointer to the raw unicode buffer. */
 static inline void* _PyUnicode_COMPACT_DATA(PyObject *op) {
