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fix(api): win_set_config autocmds crash when moving win to other tabpage

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Problem: win_enter autocommands can close new_curwin, crashing if it was the
last window in its tabpage after removing win, or can close parent, crashing
when attempting to split it later.

Solution: remove win first, check that parent is valid after win_enter.

NOTE: This isn't actually quite right, as this means win is not in the window
list or even has a frame when triggering enter autocommands (so it's not
considered valid in the tabpage). This is addressed in later commits.
This commit is contained in:
Sean Dewar
2024-02-04 00:42:36 +00:00
committed by Sean Dewar
parent a69c720639
commit bcb70eeac4
2 changed files with 27 additions and 1 deletions
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7
src/nvim/api/win_config.c
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@@ -478,12 +478,17 @@ void nvim_win_set_config(Window window, Dict(win_config) *config, Error *err)
int dir;
new_curwin = winframe_remove(win, &dir, win_tp == curtab ? NULL : win_tp);
}
win_remove(win, win_tp == curtab ? NULL : win_tp);
// move to neighboring window if we're moving the current window to a new tabpage
if (curwin == win && parent != NULL && new_curwin != NULL
&& win_tp != win_find_tabpage(parent)) {
win_enter(new_curwin, true);
if (!win_valid_any_tab(parent)) {
// win_enter autocommands closed the `parent` to split from.
api_set_error(err, kErrorTypeException, "Window to split was closed");
return;
}
}
win_remove(win, win_tp == curtab ? NULL : win_tp);
} else {
win_remove(win, win_tp == curtab ? NULL : win_tp);
ui_comp_remove_grid(&win->w_grid_alloc);