--- old/buildtools/nasgen/src/jdk/nashorn/internal/tools/nasgen/MemberInfo.java	2016-11-25 12:41:06.000000000 +0100
+++ new/buildtools/nasgen/src/jdk/nashorn/internal/tools/nasgen/MemberInfo.java	2016-11-25 12:41:06.000000000 +0100
@@ -29,7 +29,6 @@
 import static jdk.nashorn.internal.tools.nasgen.StringConstants.OBJ_PKG;
 import static jdk.nashorn.internal.tools.nasgen.StringConstants.RUNTIME_PKG;
 import static jdk.nashorn.internal.tools.nasgen.StringConstants.SCRIPTS_PKG;
-import static jdk.nashorn.internal.tools.nasgen.StringConstants.SCRIPTOBJECT_DESC;
 import static jdk.nashorn.internal.tools.nasgen.StringConstants.STRING_DESC;
 import static jdk.nashorn.internal.tools.nasgen.StringConstants.TYPE_SYMBOL;
 
@@ -111,6 +110,8 @@
 
     private boolean isOptimistic;
 
+    private boolean convertsNumericArgs;
+
     /**
      * @return the kind
      */
@@ -172,6 +173,23 @@
     }
 
     /**
+     * Check if this function converts arguments for numeric parameters to numbers
+     * so it's safe to pass booleans as 0 and 1
+     * @return true if it is safe to convert arguments to numbers
+     */
+    public boolean convertsNumericArgs() {
+        return convertsNumericArgs;
+    }
+
+    /**
+     * Tag this as a function that converts arguments for numeric params to numbers
+     * @param convertsNumericArgs if true args can be safely converted to numbers
+     */
+    public void setConvertsNumericArgs(final boolean convertsNumericArgs) {
+        this.convertsNumericArgs = convertsNumericArgs;
+    }
+
+    /**
      * Get the SpecializedFunction guard for specializations, i.e. optimistic
      * builtins
      * @return specialization, null if none