patch 8.2.2422: crash when deleting with line number out of range
Problem: Crash when deleting with line number out of range. (Houyunsong)
Solution: Avoid using a negative line number.
diff --git a/src/testdir/test_ex_mode.vim b/src/testdir/test_ex_mode.vim
index 3c6d08e..a07649e 100644
--- a/src/testdir/test_ex_mode.vim
+++ b/src/testdir/test_ex_mode.vim
@@ -206,4 +206,20 @@
call delete('Xexmodescript')
endfunc
+func Test_ex_mode_count_overflow()
+ " this used to cause a crash
+ let lines =<< trim END
+ call feedkeys("\<Esc>Q\<CR>")
+ v9|9silent! vi|333333233333y32333333%O
+ call writefile(['done'], 'Xdidexmode')
+ qall!
+ END
+ call writefile(lines, 'Xexmodescript')
+ call assert_equal(1, RunVim([], [], '-e -s -S Xexmodescript -c qa'))
+ call assert_equal(['done'], readfile('Xdidexmode'))
+
+ call delete('Xdidexmode')
+ call delete('Xexmodescript')
+endfunc
+
" vim: shiftwidth=2 sts=2 expandtab