实际上，删除变量名是一项功能，需要使用-discard-value-names激活.发布版本中的Clang会自己执行此操作(不是在调试模式下使用自编译的Clang).

Actually dropping of variable names is a feature and needs to be activated with -discard-value-names. Clang in a release build does this by its own (a self compiled clang in debug mode not).

您可以使用

clang <your-command-line> -###

然后复制输出并删除-discard-value-names.

较新的clang版本(从7开始)将标志公开给普通命令行:

Newer clang version (since 7) expose the flag to the normal command line:

clang -fno-discard-value-names <your-command-line>

来源