--- old/src/jdk.jextract/share/classes/com/sun/tools/jextract/JavaSourceFactory.java	2019-04-10 19:41:57.000000000 +0530
+++ new/src/jdk.jextract/share/classes/com/sun/tools/jextract/JavaSourceFactory.java	2019-04-10 19:41:56.000000000 +0530
@@ -382,7 +382,7 @@
         MacroParser.Macro macro = macroTree.macro().get();
         log.print(Level.FINE, () -> "Adding macro " + name);
 
-        addConstant(global_jsb, macroTree.location(), name, macro.type(), macro.value());
+        addConstant(global_jsb, macroTree.location(), Utils.toMacroName(name), macro.type(), macro.value());
 
         return true;
     }