gh-144067: Document terminal leak when initscr() follows setupterm()#152624
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serhiy-storchaka merged 1 commit intoJul 2, 2026
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…erm() The curses library keeps a single current terminal: calling initscr() or newterm() after setupterm() abandons the terminal that setupterm() allocated without freeing it. This cannot be fixed safely in code (freeing the terminal would break the capsule API and pending terminfo queries), so document the behavior, with a cross-reference from initscr() and newterm(). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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Thanks @serhiy-storchaka for the PR 🌮🎉.. I'm working now to backport this PR to: 3.15. |
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Sorry, @serhiy-storchaka, I could not cleanly backport this to |
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GH-152894 is a backport of this pull request to the 3.15 branch. |
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Document that calling :func:
initscror :func:newtermafter :func:setuptermleaks the terminal thatsetupterm()allocated: the curses library keeps only a single current terminal and does not free the previous one.This one-time libtinfo leak cannot be fixed safely in code -- freeing the terminal would break the capsule API and any pending terminfo queries (see the discussion on the issue) -- so the behavior is documented instead, with a cross-reference from :func:
initscrand :func:newterm.curses.initscraftercurses.setupterm#144067