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`stdlib.h` was included so that students could use `free`, but library now garbage-collects itself."},"comment":{"url":"https://api.github.com/repos/cs50/libcs50/issues/comments/538702453","html_url":"https://github.com/cs50/libcs50/pull/184#issuecomment-538702453","issue_url":"https://api.github.com/repos/cs50/libcs50/issues/184","id":538702453,"node_id":"MDEyOklzc3VlQ29tbWVudDUzODcwMjQ1Mw==","user":{"login":"dmalan","id":788678,"node_id":"MDQ6VXNlcjc4ODY3OA==","avatar_url":"https://avatars0.githubusercontent.com/u/788678?v=4","gravatar_id":"","url":"https://api.github.com/users/dmalan","html_url":"https://github.com/dmalan","followers_url":"https://api.github.com/users/dmalan/followers","following_url":"https://api.github.com/users/dmalan/following{/other_user}","gists_url":"https://api.github.com/users/dmalan/gists{/gist_id}","starred_url":"https://api.github.com/users/dmalan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dmalan/subscriptions","organizations_url":"https://api.github.com/users/dmalan/orgs","repos_url":"https://api.github.com/users/dmalan/repos","events_url":"https://api.github.com/users/dmalan/events{/privacy}","received_events_url":"https://api.github.com/users/dmalan/received_events","type":"User","site_admin":false},"created_at":"2019-10-06T01:07:53Z","updated_at":"2019-10-06T01:07:53Z","author_association":"MEMBER","body":"Actually, @crossroads1112, we should ensure students have access to `NULL` to check the return value of `get_string`. Is `stddef.h` best for such? Perhaps better than `stdlib.h`, which misleads students into not realizing it needs to be included for `malloc`?"}}
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