{"action":"created","issue":{"url":"https://api.github.com/repos/KDAB/hotspot/issues/125","repository_url":"https://api.github.com/repos/KDAB/hotspot","labels_url":"https://api.github.com/repos/KDAB/hotspot/issues/125/labels{/name}","comments_url":"https://api.github.com/repos/KDAB/hotspot/issues/125/comments","events_url":"https://api.github.com/repos/KDAB/hotspot/issues/125/events","html_url":"https://github.com/KDAB/hotspot/issues/125","id":308067892,"node_id":"MDU6SXNzdWUzMDgwNjc4OTI=","number":125,"title":"broken backtraces due to \"Cannot report file fragments\"","user":{"login":"milianw","id":57207,"node_id":"MDQ6VXNlcjU3MjA3","avatar_url":"https://avatars1.githubusercontent.com/u/57207?v=4","gravatar_id":"","url":"https://api.github.com/users/milianw","html_url":"https://github.com/milianw","followers_url":"https://api.github.com/users/milianw/followers","following_url":"https://api.github.com/users/milianw/following{/other_user}","gists_url":"https://api.github.com/users/milianw/gists{/gist_id}","starred_url":"https://api.github.com/users/milianw/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/milianw/subscriptions","organizations_url":"https://api.github.com/users/milianw/orgs","repos_url":"https://api.github.com/users/milianw/repos","events_url":"https://api.github.com/users/milianw/events{/privacy}","received_events_url":"https://api.github.com/users/milianw/received_events","type":"User","site_admin":false},"labels":[{"id":504319758,"node_id":"MDU6TGFiZWw1MDQzMTk3NTg=","url":"https://api.github.com/repos/KDAB/hotspot/labels/bug","name":"bug","color":"ee0701","default":true}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":10,"created_at":"2018-03-23T15:11:28Z","updated_at":"2018-10-01T14:31:47Z","closed_at":null,"author_association":"MEMBER","body":"originally reported by @arichardson over at https://github.com/KDAB/perfparser/issues/3\r\n\r\nI just tried using hotspot and it looks great but for some reason it will not display a callgraph when I use it on lld.\r\nI get lots of errors like this printed on the console: `failed to report ElfInfo{localFile=\"/local/scratch/alr48/cheri/output-stable/sdk/bin/lld\", isFile=true, originalFileName=\"lld\", originalPath=\"/local/scratch/alr48/cheri/output-stable/sdk/bin/lld\", addr=1d01000, len=35164160, pgoff=28315648, } : Cannot report file fragments`\r\n\r\nHowever, if I do a perf report I get a nice graph:\r\n```\r\n# To display the perf.data header info, please use --header/--header-only options.\r\n#\r\n#\r\n# Total Lost Samples: 0\r\n#\r\n# Samples: 12K of event 'cycles'\r\n# Event count (approx.): 11059346320\r\n#\r\n# Children      Self  Command  Shared Object        Symbol                                                                                         \r\n# ........  ........  .......  ...................  .........................................................................................................................\r\n#\r\n    21.79%     0.00%  ld.lld   [unknown]            [.] 0xcccccccccccccccc                                                                                                   \r\n             |\r\n             ---0xcccccccccccccccc\r\n                |          \r\n                |--21.78%-- (anonymous namespace)::MIPS<llvm::object::ELFType<(llvm::support::endianness)0, true> >::isPicRel\r\n                |          0x100000000001\r\n                |          |          \r\n                |          |--8.01%-- lld::elf::MergeInputSection::getOffset\r\n                |          |          |          \r\n...\r\n...\r\n...\r\n```\r\n\r\nIt seems like perf is also slighly surprised since there is this weird\r\n`21.79%     0.00%  ld.lld   [unknown]            [.] 0xcccccccccccccccc`. "},"comment":{"url":"https://api.github.com/repos/KDAB/hotspot/issues/comments/425929577","html_url":"https://github.com/KDAB/hotspot/issues/125#issuecomment-425929577","issue_url":"https://api.github.com/repos/KDAB/hotspot/issues/125","id":425929577,"node_id":"MDEyOklzc3VlQ29tbWVudDQyNTkyOTU3Nw==","user":{"login":"Hi-Angel","id":7935057,"node_id":"MDQ6VXNlcjc5MzUwNTc=","avatar_url":"https://avatars0.githubusercontent.com/u/7935057?v=4","gravatar_id":"","url":"https://api.github.com/users/Hi-Angel","html_url":"https://github.com/Hi-Angel","followers_url":"https://api.github.com/users/Hi-Angel/followers","following_url":"https://api.github.com/users/Hi-Angel/following{/other_user}","gists_url":"https://api.github.com/users/Hi-Angel/gists{/gist_id}","starred_url":"https://api.github.com/users/Hi-Angel/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Hi-Angel/subscriptions","organizations_url":"https://api.github.com/users/Hi-Angel/orgs","repos_url":"https://api.github.com/users/Hi-Angel/repos","events_url":"https://api.github.com/users/Hi-Angel/events{/privacy}","received_events_url":"https://api.github.com/users/Hi-Angel/received_events","type":"User","site_admin":false},"created_at":"2018-10-01T14:31:47Z","updated_at":"2018-10-01T14:31:47Z","author_association":"NONE","body":"FTR, it's reproducible for me with g++ 8.2.0 *(i.e. it's not solely an LLVM's problem)*. In case that matters, I've been profiling an app by its PID."}}
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