{"action":"opened","issue":{"url":"https://api.github.com/repos/VMML/vmmlib/issues/88","labels_url":"https://api.github.com/repos/VMML/vmmlib/issues/88/labels{/name}","comments_url":"https://api.github.com/repos/VMML/vmmlib/issues/88/comments","events_url":"https://api.github.com/repos/VMML/vmmlib/issues/88/events","html_url":"https://github.com/VMML/vmmlib/issues/88","id":55601431,"number":88,"title":"Reserved identifiers in include guards","user":{"login":"juanchopanza","id":675013,"avatar_url":"https://avatars.githubusercontent.com/u/675013?v=3","gravatar_id":"","url":"https://api.github.com/users/juanchopanza","html_url":"https://github.com/juanchopanza","followers_url":"https://api.github.com/users/juanchopanza/followers","following_url":"https://api.github.com/users/juanchopanza/following{/other_user}","gists_url":"https://api.github.com/users/juanchopanza/gists{/gist_id}","starred_url":"https://api.github.com/users/juanchopanza/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/juanchopanza/subscriptions","organizations_url":"https://api.github.com/users/juanchopanza/orgs","repos_url":"https://api.github.com/users/juanchopanza/repos","events_url":"https://api.github.com/users/juanchopanza/events{/privacy}","received_events_url":"https://api.github.com/users/juanchopanza/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-01-27T10:41:32Z","updated_at":"2015-01-27T10:41:32Z","closed_at":null,"body":"I have seen plenty of include guards using double underscores. These are C++ reserved identifiers and using them is technically undefined behaviour. I realise the chances of a name clash with an implementation identifier are slim, but it is still a good idea to remove UB and in this case it seems quite easy to do."}}