fixes #1989

compiler/vm.nim

@@ -1364,9 +1364,11 @@ var
   globalCtx: PCtx
 
 proc setupGlobalCtx(module: PSym) =
-  if globalCtx.isNil: globalCtx = newCtx(module)
-  else: refresh(globalCtx, module)
-  registerAdditionalOps(globalCtx)
+  if globalCtx.isNil:
+    globalCtx = newCtx(module)
+    registerAdditionalOps(globalCtx)
+  else:
+    refresh(globalCtx, module)
 
 proc myOpen(module: PSym): PPassContext =
   #var c = newEvalContext(module, emRepl)

compiler/vmdef.nim

@@ -213,6 +213,7 @@ proc newCtx*(module: PSym): PCtx =
 proc refresh*(c: PCtx, module: PSym) =
   c.module = module
   c.prc = PProc(blocks: @[])
+  c.loopIterations = MaxLoopIterations
 
 proc registerCallback*(c: PCtx; name: string; callback: VmCallback) =
   c.callbacks.add((name, callback))