fix a problem that doesn't work completion with clang
fix a problem that doesn't work completion with clang

DaikiMaekawa/daiki-env-setup,DaikiMaekawa/env_setup,DaikiMaekawa/env_setup,DaikiMaekawa/myenv-setup,DaikiMaekawa/daiki-env-setup,DaikiMaekawa/daiki-env-setup,DaikiMaekawa/myenv-setup,DaikiMaekawa/env_setup