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-rw-r--r--src/testdir/test_tabline.vim23
1 files changed, 23 insertions, 0 deletions
diff --git a/src/testdir/test_tabline.vim b/src/testdir/test_tabline.vim
index eff95082cc..6cfed7d166 100644
--- a/src/testdir/test_tabline.vim
+++ b/src/testdir/test_tabline.vim
@@ -112,4 +112,27 @@ func Test_tabline_flags()
%bw!
endfunc
+function EmptyTabname()
+ return ""
+endfunction
+
+function MakeTabLine() abort
+ let titles = map(range(1, tabpagenr('$')), '"%( %" . v:val . "T%{EmptyTabname()}%T %)"')
+ let sep = 'あ'
+ let tabpages = join(titles, sep)
+ return tabpages .. sep .. '%=%999X X'
+endfunction
+
+func Test_tabline_empty_group()
+ " this was reading invalid memory
+ set tabline=%!MakeTabLine()
+ tabnew
+ redraw!
+
+ tabclose
+ set tabline=
+endfunc
+
+
+
" vim: shiftwidth=2 sts=2 expandtab