patch 9.0.2112: [security]: overflow in shift_line Commit: https://github.com/vim/vim/commit/6bf131888a3d1de62bbfa8a7ea03c0ddccfd496e Author: Christian Brabandt <cb@256bit.org> Date: Tue Nov 14 22:42:59 2023 +0100 patch 9.0.2112: [security]: overflow in shift_line Problem: [security]: overflow in shift_line Solution: allow a max indent of INT_MAX [security]: overflow in shift_line When shifting lines in operator pending mode and using a very large value, we may overflow the size of integer. Fix this by using a long variable, testing if the result would be larger than INT_MAX and if so, indent by INT_MAX value. Special case: We cannot use long here, since on 32bit architectures (or on Windows?), it typically cannot take larger values than a plain int, so we have to use long long count, decide whether the resulting multiplication of the shiftwidth value * amount is larger than INT_MAX and if so, we will store INT_MAX as possible larges value in the long long count variable. Then we can safely cast it back to int when calling the functions to set the indent (set_indent() or change_indent()). So this should be safe. Add a test that when using a huge value in operator pending mode for shifting, we will shift by INT_MAX closes: #13535 Signed-off-by: Christian Brabandt <cb@256bit.org>

README_unix.txt for version 9.0 of Vim: Vi IMproved.

This file explains the installation of Vim on Unix systems.
See "README.txt" for general information about Vim.


When you use the source distribution, "make install" is used to install Vim.
See the "INSTALL" file in the "src" directory.

If you use a compiled package, follow the instructions for the package.