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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Build error by using `stdscr` in `curses` C extension module","articleBody":"# Bug report\n\n### Bug description:\n\nI wanted to compile Python but I got the following issue since #151748 \n\n```\nIn file included from ./Modules/_curses_panel.c:21:\n./Include/py_curses.h:99:5: warning: function declaration isn’t a prototype [-Wstrict-prototypes]\n   99 |     PyObject *stdscr;        /* the screen's standard window, or NULL */\n      |     ^~~~~~~~\nIn file included from /usr/include/ncursesw/curses.h:90,\n                 from ./Include/py_curses.h:47:\n./Include/py_curses.h:99:15: error: field ‘_nc_stdscr’ declared as a function\n   99 |     PyObject *stdscr;        /* the screen's standard window, or NULL */\n      |               ^~~~~~\nmake: *** [Makefile:3791: Modules/_curses_panel.o] Error 1\nmake: *** Waiting for unfinished jobs....\nIn file included from ./Modules/_cursesmodule.c:108:\n./Include/py_curses.h:99:5: warning: function declaration isn’t a prototype [-Wstrict-prototypes]\n   99 |     PyObject *stdscr;        /* the screen's standard window, or NULL */\n      |     ^~~~~~~~\nIn file included from /usr/include/ncursesw/curses.h:90,\n                 from ./Include/py_curses.h:47:\n./Include/py_curses.h:99:15: error: field ‘_nc_stdscr’ declared as a function\n   99 |     PyObject *stdscr;        /* the screen's standard window, or NULL */\n      |               ^~~~~~\n./Modules/_cursesmodule.c:5128:20: warning: function declaration isn’t a prototype [-Wstrict-prototypes]\n 5128 |                    FILE *outfp, FILE *infp, PyObject *stdscr)\n      |                    ^~~~\n./Modules/_cursesmodule.c: In function ‘PyCursesScreen_New’:\n./Modules/_cursesmodule.c:5138:16: error: lvalue required as left operand of assignment\n 5138 |     so-\u003estdscr = Py_XNewRef(stdscr);\n      |                ^\nIn file included from ./Include/Python.h:80,\n                 from ./Modules/_cursesmodule.c:96:\n./Modules/_cursesmodule.c: In function ‘PyCursesScreen_clear’:\n./Include/refcount.h:485:39: error: lvalue required as unary ‘\u0026’ operand\n  485 |         _Py_TYPEOF(op)* _tmp_op_ptr = \u0026(op); \\\n      |                                       ^\n./Modules/_cursesmodule.c:5200:5: note: in expansion of macro ‘Py_CLEAR’\n 5200 |     Py_CLEAR(so-\u003estdscr);\n      |     ^~~~~~~~\n./Modules/_cursesmodule.c: In function ‘_curses_newterm_impl’:\n./Modules/_cursesmodule.c:6727:49: error: lvalue required as left operand of assignment\n 6727 |     ((PyCursesScreenObject *)screenobj)-\u003estdscr = Py_NewRef(win);\n      |                                                 ^\nmake: *** [Makefile:3789: Modules/_cursesmodule.o] Error 1\n```\n\nThe problem is that my `ncursesw/ncurses.h` contains\n\n```c\n#define stdscr      NCURSES_PUBLIC_VAR(stdscr())\n```\n\nAnd thus using `stdscr` is not a valid identifier in the struct or in the parameter functions.\n\ncc @serhiy-storchaka \n\n### CPython versions tested on:\n\nCPython main branch\n\n### Operating systems tested on:\n\n_No response_\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-153010\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/picnixz","@type":"Person","name":"picnixz"},"datePublished":"2026-07-04T09:22:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/153009/cpython/issues/153009"}