{"action":"closed","issue":{"url":"https://api.github.com/repos/WebAssembly/design/issues/466","labels_url":"https://api.github.com/repos/WebAssembly/design/issues/466/labels{/name}","comments_url":"https://api.github.com/repos/WebAssembly/design/issues/466/comments","events_url":"https://api.github.com/repos/WebAssembly/design/issues/466/events","html_url":"https://github.com/WebAssembly/design/issues/466","id":117711954,"number":466,"title":"Arithmetic with carry and overflow","user":{"login":"fmccabe","id":3654349,"avatar_url":"https://avatars.githubusercontent.com/u/3654349?v=3","gravatar_id":"","url":"https://api.github.com/users/fmccabe","html_url":"https://github.com/fmccabe","followers_url":"https://api.github.com/users/fmccabe/followers","following_url":"https://api.github.com/users/fmccabe/following{/other_user}","gists_url":"https://api.github.com/users/fmccabe/gists{/gist_id}","starred_url":"https://api.github.com/users/fmccabe/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fmccabe/subscriptions","organizations_url":"https://api.github.com/users/fmccabe/orgs","repos_url":"https://api.github.com/users/fmccabe/repos","events_url":"https://api.github.com/users/fmccabe/events{/privacy}","received_events_url":"https://api.github.com/users/fmccabe/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2015-11-19T00:15:30Z","updated_at":"2015-12-02T16:36:18Z","closed_at":"2015-12-02T16:36:18Z","body":"The integer arithmetic operators add.* and sub.* should have 'carry' versions: add with carry and sub with borrow. In addition, the mul.* and div.* operators should generate some form of overflow signal.\r\n\r\nThis permits arbitrary precision arithmetic as well as just being safer - with no automatic overflow of integer operations."}}