patch 9.0.2107: [security]: FPE in adjust_plines_for_skipcol Commit: https://github.com/vim/vim/commit/cb0b99f0672d8446585d26e998343dceca17d1ce Author: Christian Brabandt <cb@256bit.org> Date: Tue Nov 14 20:05:59 2023 +0100 patch 9.0.2107: [security]: FPE in adjust_plines_for_skipcol Problem: [security]: FPE in adjust_plines_for_skipcol Solution: don't divide by zero, return zero Prevent a floating point exception when calculating w_skipcol (which can happen with a small window when the number option is set and cpo+=n). Add a test to verify Signed-off-by: Christian Brabandt <cb@256bit.org>

# Clang 12 (or Apple clang 13) and later makes a warning '-Wcompound-token-split-by-macro' enable by default.
/^PERL_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro -Wno-compound-token-split-by-macro/
/^RUBY_CFLAGS_EXTRA[[:blank:]]*=/s/$/ -Wno-error=compound-token-split-by-macro/