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| author | Alexandre Teoi <ateoi@users.noreply.github.com> | 2023-07-26 00:22:57 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-07-26 11:22:57 +0800 |
| commit | 643bea31b8673f5db70816ecac61f76087019fb5 (patch) | |
| tree | c0153bf1be33b6b1aa5fbaf1043562a66d4dfdad /runtime/lua/vim/_meta/vimfn.lua | |
| parent | 74bd4aba57d2f1b224abe46a6de82911d14ef6c1 (diff) | |
| download | rneovim-643bea31b8673f5db70816ecac61f76087019fb5.tar.gz rneovim-643bea31b8673f5db70816ecac61f76087019fb5.tar.bz2 rneovim-643bea31b8673f5db70816ecac61f76087019fb5.zip | |
fix(inccommand): restrict cmdpreview undo calls (#24289)
Problem:
The cmdpreview saved undo nodes on cmdpreview_prepare() from ex_getln.c may
become invalid (free) if the preview function makes undo operations, causing
heap-use-after-free errors.
Solution:
Save the buffer undo list on cmdpreview_prepare)_ and start a new empty one. On
cmdpreview_restore_state(), undo all the entries in the new undo list and
restore the original one. With this approach, the preview function will be
allowed to undo only its own changes.
Fix #20036
Fix #20248
Diffstat (limited to 'runtime/lua/vim/_meta/vimfn.lua')
0 files changed, 0 insertions, 0 deletions