patch 8.2.1674: Vim9: internal error when using variable that was not set Commit: https://github.com/vim/vim/commit/f0afd9e18227d3459c888584d0658a1837d2aaf8 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Sep 13 18:57:47 2020 +0200 patch 8.2.1674: Vim9: internal error when using variable that was not set Problem: Vim9: internal error when using variable that was not set. Solution: Give a meaningful error. (closes https://github.com/vim/vim/issues/6937)

--- a/src/testdir/test_vim9_script.vim
+++ b/src/testdir/test_vim9_script.vim
@@ -3308,6 +3308,14 @@ def Test_invalid_sid()
   delete('Xdidit')
 enddef
 
+def Test_unset_any_variable()
+  let lines =<< trim END
+    let var: any
+    assert_equal(0, var)
+  END
+  CheckDefAndScriptSuccess(lines)
+enddef
+
 " Keep this last, it messes up highlighting.
 def Test_substitute_cmd()
   new