{"action":"opened","issue":{"url":"https://api.github.com/repos/dart-lang/sdk/issues/27849","repository_url":"https://api.github.com/repos/dart-lang/sdk","labels_url":"https://api.github.com/repos/dart-lang/sdk/issues/27849/labels{/name}","comments_url":"https://api.github.com/repos/dart-lang/sdk/issues/27849/comments","events_url":"https://api.github.com/repos/dart-lang/sdk/issues/27849/events","html_url":"https://github.com/dart-lang/sdk/issues/27849","id":190203652,"number":27849,"title":"VM crash with DBC","user":{"login":"fsc8000","id":2890421,"avatar_url":"https://avatars.githubusercontent.com/u/2890421?v=3","gravatar_id":"","url":"https://api.github.com/users/fsc8000","html_url":"https://github.com/fsc8000","followers_url":"https://api.github.com/users/fsc8000/followers","following_url":"https://api.github.com/users/fsc8000/following{/other_user}","gists_url":"https://api.github.com/users/fsc8000/gists{/gist_id}","starred_url":"https://api.github.com/users/fsc8000/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fsc8000/subscriptions","organizations_url":"https://api.github.com/users/fsc8000/orgs","repos_url":"https://api.github.com/users/fsc8000/repos","events_url":"https://api.github.com/users/fsc8000/events{/privacy}","received_events_url":"https://api.github.com/users/fsc8000/received_events","type":"User","site_admin":false},"labels":[{"id":219928165,"url":"https://api.github.com/repos/dart-lang/sdk/labels/area-vm","name":"area-vm","color":"c7def8","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2016-11-18T00:21:03Z","updated_at":"2016-11-18T00:21:03Z","closed_at":null,"body":"Revision 3b4854ac7d54e8dcbe48ac7b1698d4ec5cc703cd\r\n\r\nRepro (not very reliable)\r\n```\r\nout/ReleaseSIMDBC64/dart  --enable_asserts --enable_type_checks --error_on_bad_type --error_on_bad_override --ignore-unrecognized-flags --packages=.packages runtime/observatory/tests/service/debugger_location_test.dart\r\n```\r\n\r\nBacktrace:\r\n```\r\n(gdb) bt\r\n#0  dart::Simulator::Call (this=0x21f6140, code=..., arguments_descriptor=..., arguments=..., thread=0x21df000) at runtime/vm/simulator_dbc.cc:3502\r\n#1  0x0000000000645690 in dart::DartEntry::InvokeFunction (function=..., arguments=..., arguments_descriptor=...) at runtime/vm/dart_entry.cc:117\r\n#2  0x00000000006465a6 in dart::DartEntry::InvokeFunction (function=..., arguments=...) at runtime/vm/dart_entry.cc:29\r\n#3  0x000000000064928b in dart::DartLibraryCalls::HandleMessage (handler=..., message=...) at runtime/vm/dart_entry.cc:557\r\n#4  0x0000000000711768 in dart::IsolateMessageHandler::HandleMessage (this=0x22d81a0, message=0x21e3cb0) at runtime/vm/isolate.cc:564\r\n#5  0x0000000000732eec in dart::MessageHandler::HandleMessages (this=this@entry=0x22d81a0, ml=ml@entry=0x7feb54fa0d70, allow_normal_messages=true, allow_multiple_normal_messages=allow_multiple_normal_messages@entry=true) at runtime/vm/message_handler.cc:217\r\n#6  0x00000000007333ff in dart::MessageHandler::TaskCallback (this=0x22d81a0) at runtime/vm/message_handler.cc:373\r\n#7  0x00000000008ae49c in dart::ThreadPool::Worker::Loop (this=this@entry=0x2334090) at runtime/vm/thread_pool.cc:400\r\n#8  0x00000000008ae65f in dart::ThreadPool::Worker::Main (args=args@entry=36913296) at runtime/vm/thread_pool.cc:457\r\n#9  0x00000000007b1b56 in dart::ThreadStart (data_ptr=<optimized out>) at runtime/vm/os_thread_linux.cc:125\r\n#10 0x00007feb56a10184 in start_thread (arg=0x7feb54fa1700) at pthread_create.c:312\r\n#11 0x00007feb55b1137d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111\r\n```\r\n@zanderso @mraleph "}}
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