fix #815

Author: sumneko

Diff for: changelog.md

@@ -1,6 +1,7 @@
 # changelog
 
 ## 2.5.2
+* `FIX` [#815](https://github.com/sumneko/lua-language-server/issues/815)
 * `FIX` [#825](https://github.com/sumneko/lua-language-server/issues/825)
 * `FIX` [#827](https://github.com/sumneko/lua-language-server/issues/827)
 * `FIX` [#837](https://github.com/sumneko/lua-language-server/issues/837)

Diff for: script/core/noder.lua

@@ -1341,6 +1341,13 @@ compileNodeMap = util.switch()
             pushForward(noders, id, getID(parent))
         end
     end)
+    : case 'loop'
+    : call(function (noders, id, source)
+        local loc = source.loc
+        if loc then
+            pushForward(noders, getID(loc), 'dn:integer')
+        end
+    end)
     : case 'in'
     : call(function (noders, id, source)
         local keys = source.keys

Diff for: test/type_inference/init.lua

@@ -1053,3 +1053,7 @@ f {
     }
 }
 ]]
+
+TEST 'integer' [[
+for <?i?> = a, b, c do end
+]]