vim-patch:9.2.0180: possible crash with winminheight=0 (#38335)

Problem:  possible crash with winminheight=0
          (Emilien Breton)
Solution: Use <= instead of < when checking reserved room in
          frame_setheight() to correctly handle the zero-height
          boundary case (Hirohito Higashi).

In frame_setheight(), when shrinking the current window and the only
other window has 'winfixheight' with 'winminheight'=0, room_reserved
was not cleared because the condition used '<' instead of '<='.
The freed rows were discarded, leaving fr_height sum less than
topframe fr_height.  Subsequent resize operations then computed a
wrong room_cmdline that expanded topframe beyond the screen, causing
a crash.

fixes:  vim/vim#19706
closes: vim/vim#19712

https://github.com/vim/vim/commit/a5d9654620648ea6d3f2f8dc2a3e42de219cf860

Co-authored-by: Hirohito Higashi <h.east.727@gmail.com>

0 files changed, 0 insertions, 0 deletions