1、keil编译出现这种报错:
error: #3093: anonymous structs are only supported in --gnu mode, or when enabled with #pragma anon_unions
2、查看官方文件地址
https://developer.arm.com/documentation/dui0375/g/Language-Extensions/Anonymous-classes–structures-and-unions
3、方法:如图可以在这里配置一下GNU extensions打勾