harmony1.03 32mx cannot compile for c++,but 32mz compile successed (tangxl)

harmony1.03 32mx cannot compile for c++,but 32mz compile successed.for this suppose,to make a little example project.1.create a harmony project2.create a configuration for 32mx440f256h3.use usb stack,and hid etc.4.generate code.5. rename app.c to app.cpp6..