fixes #5439

compiler/cgen.nim

@@ -1377,9 +1377,10 @@ proc myClose(graph: ModuleGraph; b: PPassContext, n: PNode): PNode =
   registerModuleToMain(m.g, m.module)
 
   if sfMainModule in m.module.flags:
-    incl m.flags, objHasKidsValid
+    if m.g.forwardedProcsCounter == 0:
-    var disp = generateMethodDispatchers(graph)
+      incl m.flags, objHasKidsValid
-    for i in 0..sonsLen(disp)-1: genProcAux(m, disp.sons[i].sym)
+    let disp = generateMethodDispatchers(graph)
+    for x in disp: genProcAux(m, x.sym)
     genMainProc(m)
 
 proc cgenWriteModules*(backend: RootRef, config: ConfigRef) =

tests/ccgbugs/twrong_method.nim

@@ -0,0 +1,27 @@
+discard """
+  cmd: "nim c -d:release $file"
+  output: '''correct method'''
+"""
+# bug #5439
+type
+  Control* = ref object of RootObj
+
+  ControlImpl* = ref object of Control
+
+  Container* = ref object of ControlImpl
+
+  ContainerImpl* = ref object of Container
+
+method testProc*(control: Control) {.base.} = echo "wrong method"
+
+method testProc*(container: Container) = echo "correct method"
+
+proc main()
+
+main() # wrong method called
+
+proc main() =
+  var container = new ContainerImpl
+  container.testProc()
+
+# main() # correct method called