fix nim-lang#9180

timotheecour · Oct 4, 2018 · c893a41 · c893a41
1 parent 5ea0bf1
commit c893a41
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/compiler/nimeval.nim b/compiler/nimeval.nim
@@ -99,8 +99,13 @@ proc createInterpreter*(scriptName: string;
   initDefines(conf.symbols)
   defineSymbol(conf.symbols, "nimscript")
   defineSymbol(conf.symbols, "nimconfig")
-  registerPass(graph, semPass)
-  registerPass(graph, evalPass)
+  # Consider factoring this pattern with `runNimScript` or making
+  # registerPass(graph, pass) evaluate only once per pass
+  var registeredPasses {.global.} = false
+  if not registeredPasses:
+    registeredPasses = true
+    registerPass(graph, semPass)
+    registerPass(graph, evalPass)
 
   for p in searchPaths:
     conf.searchPaths.add(AbsoluteDir p)