patch 8.2.4009: reading one byte beyond the end of the line
Problem: Reading one byte beyond the end of the line.
Solution: Check for NUL byte first.
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 0ec1700..025edd5 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -3537,6 +3537,17 @@
unlet g:mydict
enddef
+def Test_go_beyond_end_of_cmd()
+ # this was reading the byte after the end of the line
+ var lines =<< trim END
+ def F()
+ cal
+ enddef
+ defcompile
+ END
+ CheckScriptFailure(lines, 'E476:')
+enddef
+
if has('python3')
def Test_python3_heredoc()
py3 << trim EOF