Failure of resizeterm() causes subsequent call with stdscr to crash

[Peter Bierma]

Hello,

This was reported downstream as a bug in Python's curses module. See the issue there: https://github.com/python/cpython/issues/120378

It seems that calling resizeterm() with some ridiculous resolution (35000x1 in the CPython issue) causes stdscr to break (i.e., a crash). A small reproducer:

    #include <curses.h> // or ncurses.h

    int
    main(void)
    {
        initscr();
        if (resizeterm(35000, 1) < 0) {
            puts("resizeterm() failed, trying to reset");
        }
        wrefresh(stdscr); // Segfault!
        return 0;

    }

At first I thought this was an issue with stdscr getting freed, but manually resetting it with initscr() still causes use of stdscr to crash. Any ideas?

Best regards,

Peter Bierma