patch 9.1.0116: win_split_ins may not check available room Commit: https://github.com/vim/vim/commit/0fd44a5ad81ade342cb54d8984965bdedd2272c8 Author: Sean Dewar <6256228+seandewar@users.noreply.github.com> Date: Tue Feb 20 20:28:15 2024 +0100 patch 9.1.0116: win_split_ins may not check available room Problem: win_split_ins has no check for E36 when moving an existing window Solution: check for room and fix the issues in f_win_splitmove() (Sean Dewar) win_split_ins has no check for E36 when moving an existing window, allowing for layouts with many overlapping zero-sized windows to be created (which may also cause drawing issues with tablines and such). f_win_splitmove also has some bugs. So check for room and fix the issues in f_win_splitmove. Handle failure in the two relevant win_split_ins callers by restoring the original layout, and factor the common logic into win_splitmove. Don't check for room when opening an autocommand window, as it's a temporary window that's rarely interacted with or drawn anyhow, and is rather important for some autocommands. Issues fixed in f_win_splitmove: - Error if splitting is disallowed. - Fix heap-use-after-frees if autocommands fired from switching to "targetwin" close "wp" or "oldwin". - Fix splitting the wrong window if autocommands fired from switching to "targetwin" switch to a different window. - Ensure -1 is returned for all errors. Also handle allocation failure a bit earlier in make_snapshot (callers, except win_splitmove, don't really care if a snapshot can't be made, so just ignore the return value). Note: Test_smoothscroll_in_zero_width_window failed after these changes with E36, as it was using the previous behaviour to create a zero-width window. I've fixed the test such that it fails with UBSAN as expected when v9.0.1367 is reverted (and simplified it too). related: #14042 Signed-off-by: Sean Dewar <6256228+seandewar@users.noreply.github.com> Signed-off-by: Christian Brabandt <cb@256bit.org>

#
# Makefile for VIM on Win32, using MinGW cross compiler on Cygwin
#
# Also read INSTALLpc.txt!
#
# This compiles Vim as a Windows application.  If you want Vim to run as a
# Cygwin application use the Makefile (just like on Unix).
#
# The old Make_cyg.mak (maintained by Dan Sharp et al.) was merged into
# Make_cyg_ming.mak.  Note: USEDLL option was removed.
# This file contains Cygwin specific settings. Common settings are contained
# in Make_cyg_ming.mak.
#
# Last updated by Ken Takata.
# Last Change: 2014 Oct 21


# uncomment 'PERL' if you want a perl-enabled version
#PERL=/cygdrive/c/perl

# uncomment 'LUA' if you want a Lua-enabled version
#LUA=/cygdrive/c/lua

# uncomment 'MZSCHEME' if you want a MzScheme-enabled version
#MZSCHEME=/cygdrive/d/plt

# uncomment 'PYTHON' if you want a python-enabled version
#PYTHON=/cygdrive/c/python20

# uncomment 'PYTHON3' if you want a python3-enabled version
#PYTHON3=/cygdrive/c/python31

# uncomment 'TCL' if you want a Tcl-enabled version
#TCL=/cygdrive/c/tcl

# uncomment 'RUBY' if you want a Ruby-enabled version
#RUBY=/cygdribe/c/ruby


# Use MinGW-w64 cross compiler.
# There are two MinGW-w64 packages in Cygwin:
#   32-bit: mingw64-i686-gcc-g++
#   64-bit: mingw64-x86_64-gcc-g++
# You may also need to set 'ARCH' in Make_cyg_ming.mak.
CROSS_COMPILE = i686-w64-mingw32-
#CROSS_COMPILE = x86_64-w64-mingw32-


# Do not change this.
UNDER_CYGWIN = yes
include Make_cyg_ming.mak

# vim: set noet sw=8 ts=8 sts=0 wm=0 tw=0: