patch 8.2.3338: Vim9: no type check when assigning a list range Commit: https://github.com/vim/vim/commit/89071cb6a116a74f78f77a1853e6fada44872a15 Author: Bram Moolenaar <Bram@vim.org> Date: Fri Aug 13 18:20:09 2021 +0200 patch 8.2.3338: Vim9: no type check when assigning a list range Problem: Vim9: no type check when assigning a list range. (Naohiro Ono) Solution: Check the member type. (closes https://github.com/vim/vim/issues/8750)

--- a/src/testdir/test_listdict.vim
+++ b/src/testdir/test_listdict.vim
@@ -189,6 +189,12 @@ func Test_list_range_assign()
       call assert_equal([5, 6], l)
   END
   call CheckLegacyAndVim9Success(lines)
+
+  let lines =<< trim END
+    var l = [7]
+    l[:] = ['text']
+  END
+  call CheckDefAndScriptFailure(lines, 'E1012:', 2)
 endfunc
 
 " Test removing items in list