src/jdk.jextract/share/classes/com/sun/tools/jextract/JavaSourceFactoryExt.java

*** 128,138 ****
      public Boolean visitMacro(MacroTree macroTree, JType jt) {
          if (super.visitMacro(macroTree, jt)) {
              String name = macroTree.name();
              MacroParser.Macro macro = macroTree.macro().get();
              log.print(Level.FINE, () -> "Adding macro " + name);
!             addConstant(header_jsb, name, macro.type(), macro.value());
              return true;
          } else {
              return false;
          }
      }
--- 128,138 ----
      public Boolean visitMacro(MacroTree macroTree, JType jt) {
          if (super.visitMacro(macroTree, jt)) {
              String name = macroTree.name();
              MacroParser.Macro macro = macroTree.macro().get();
              log.print(Level.FINE, () -> "Adding macro " + name);
!             addConstant(header_jsb, Utils.toMacroName(name), macro.type(), macro.value());
              return true;
          } else {
              return false;
          }
      }