[issue15037] test_curses fails with OverflowError

John Bollinger added the comment: Ok, I confirm that the test passes after the system's ncurses library is upgraded to ncurses 5.8, and fails again when ncurses is downgraded back to version 5.7. -- ___ Python tracker

[issue15037] test_curses fails with OverflowError

John Bollinger added the comment: Clarification: "so that's not a good solution for most users" ... of RedHat-family distros, version 6.2 and earlier. In fact, it looks like RedHat is sticking with its current version of ncurses for RHEL 6.3, too, so no help is coming from that direction any

[issue15037] test_curses fails with OverflowError

John Bollinger added the comment: The system on which I encountered the test failure uses ncurses 5.7, so that's consistent with the theory that the test is tickling an ncurses bug. I'll have a look at testing with ncurses 5.8, but it is not available from RedHat or CentOS (and it never will

[issue15037] test_curses fails with OverflowError

Ned Deily added the comment: I just ran into this problem on another platform. I believe the problem is due to a sign-extension bug in the ncurses library unget_wch function (see link below). It was apparently fixed in nurses 5.8; I've tested with the current ncurses 5.9 and test_ncurses no

[issue15037] test_curses fails with OverflowError

New submission from John Bollinger : I encountered this test failure while attempting to verify a patch for a separate issue, and I found that it occurs with the unmodified source on the default branch: LD_LIBRARY_PATH="$PWD" ./python -bb -Wd -m test -r -w -uall -v test_curses == CPython 3.3.0