{"action":"opened","issue":{"url":"https://api.github.com/repos/google/sanitizers/issues/809","repository_url":"https://api.github.com/repos/google/sanitizers","labels_url":"https://api.github.com/repos/google/sanitizers/issues/809/labels{/name}","comments_url":"https://api.github.com/repos/google/sanitizers/issues/809/comments","events_url":"https://api.github.com/repos/google/sanitizers/issues/809/events","html_url":"https://github.com/google/sanitizers/issues/809","id":230090784,"number":809,"title":"Coverage pass creating critical edges, which stop coverage from working properly","user":{"login":"cheshire","id":348959,"avatar_url":"https://avatars3.githubusercontent.com/u/348959?v=3","gravatar_id":"","url":"https://api.github.com/users/cheshire","html_url":"https://github.com/cheshire","followers_url":"https://api.github.com/users/cheshire/followers","following_url":"https://api.github.com/users/cheshire/following{/other_user}","gists_url":"https://api.github.com/users/cheshire/gists{/gist_id}","starred_url":"https://api.github.com/users/cheshire/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cheshire/subscriptions","organizations_url":"https://api.github.com/users/cheshire/orgs","repos_url":"https://api.github.com/users/cheshire/repos","events_url":"https://api.github.com/users/cheshire/events{/privacy}","received_events_url":"https://api.github.com/users/cheshire/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-05-19T21:10:56Z","updated_at":"2017-05-19T21:10:56Z","closed_at":null,"body":"For the input LLVM IR file http://metaworld.me/swift.ll (visualization http://metaworld.me/uninstrumented.pdf) applying coverage (`opt swift.ll -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard`) produces the output http://metaworld.me/swift_instrumented.ll (visualization http://metaworld.me/instrumented.pdf), which contains critical edges, and thus for which the coverage is not working properly."}}
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