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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"PyTuple_SET_ITEM fails to compile in C++ source","articleBody":"- CPython versions tested on: 3.11b3\r\n- Operating system and architecture: Debian Linux, GCC 10.2.1-6\r\n\r\nThe kiwisolver extension doesn't compile with beta 3.  The error is:\r\n```\r\n/usr/local/python3.11.0b3/include/python3.11/pyport.h:47:24: error: invalid ‘static_cast’ from type ‘int’ to type ‘_object*’\r\n   47 |                 return static_cast\u003ctype\u003e(const_cast\u003cexpr_type \u0026\u003e(expr));\r\n      |                        ^~~~~\r\n```\r\n\r\nThis seems to be an issue with the new inline functions for things that used to be macros.  E.g. PyTuple_SET_ITEM.  The C++ code triggering the issue is:\r\n```\r\n--- a/py/src/symbolics.h\r\n+++ b/py/src/symbolics.h\r\n@@ -123,7 +123,7 @@ PyObject* BinaryMul::operator()( Expression* first, double second )\r\n                return 0;\r\n        Py_ssize_t end = PyTuple_GET_SIZE( first-\u003eterms );\r\n        for( Py_ssize_t i = 0; i \u003c end; ++i )  // memset 0 for safe error return\r\n-               PyTuple_SET_ITEM( terms.get(), i, 0 );\r\n+               PyTuple_SetItem( terms.get(), i, 0 );\r\n        for( Py_ssize_t i = 0; i \u003c end; ++i )\r\n        {\r\n                PyObject* item = PyTuple_GET_ITEM( first-\u003eterms, i );\r\n```\r\n\r\nReplacing the macro with the function version seems to allow the extension to compile.\r\n\r\nThis seems related to https://github.com/python/cpython/issues/92898","author":{"url":"https://github.com/nascheme","@type":"Person","name":"nascheme"},"datePublished":"2022-06-02T20:58:40.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/93442/cpython/issues/93442"}