In Lua 5.5, for loop variables are treated as constants

Author: sumneko

script/parser/compile.lua

@@ -3548,7 +3548,22 @@ local function parseFor()
  LocalCount = LocalCount + forStateVars
  if name then
  ---@cast name parser.object
- local loc = createLocal(name)
+ -- In Lua 5.5, for loop variables are treated as constants
+ local attrs
+ if State.version == 'Lua 5.5' then
+ attrs = {
+ type = 'localattrs',
+ [1] = {
+ type = 'localattr',
+ start = name.start,
+ finish = name.finish,
+ parent = nil, -- will be set by createLocal
+ [1] = 'const',
+ }
+ }
+ attrs[1].parent = attrs
+ end
+ local loc = createLocal(name, attrs)
  loc.parent = action
  action.finish = name.finish
  action.bstart = action.finish
@@ -3653,7 +3668,22 @@ local function parseFor()
  for i = 1, #list do
  local obj = list[i]
  ---@cast obj parser.object
- local loc = createLocal(obj)
+ -- In Lua 5.5, for loop variables are treated as constants
+ local attrs
+ if State.version == 'Lua 5.5' then
+ attrs = {
+ type = 'localattrs',
+ [1] = {
+ type = 'localattr',
+ start = obj.start,
+ finish = obj.finish,
+ parent = nil, -- will be set by createLocal
+ [1] = 'const',
+ }
+ }
+ attrs[1].parent = attrs
+ end
+ local loc = createLocal(obj, attrs)
  loc.parent = action
  loc.effect = action.finish
  end