message: checkered_flag: experimenting with /Wall
diff: @@ -6,8 +6,8 @@ os:
  environment:
  matrix:
  - - additional_flags: ""
  - - additional_flags: "/permissive- /std:c++latest /utf-8"
  + - additional_flags: "/Wall"
  + - additional_flags: "/permissive- /std:c++latest /utf-8 /Wall"
  matrix:
  exclude:
  