{"action":"opened","issue":{"url":"https://api.github.com/repos/dart-lang/sdk/issues/39032","repository_url":"https://api.github.com/repos/dart-lang/sdk","labels_url":"https://api.github.com/repos/dart-lang/sdk/issues/39032/labels{/name}","comments_url":"https://api.github.com/repos/dart-lang/sdk/issues/39032/comments","events_url":"https://api.github.com/repos/dart-lang/sdk/issues/39032/events","html_url":"https://github.com/dart-lang/sdk/issues/39032","id":510349512,"node_id":"MDU6SXNzdWU1MTAzNDk1MTI=","number":39032,"title":"Parser fuzz crash: unimplemented parse in mixin","user":{"login":"MichaelRFairhurst","id":1627771,"node_id":"MDQ6VXNlcjE2Mjc3NzE=","avatar_url":"https://avatars1.githubusercontent.com/u/1627771?v=4","gravatar_id":"","url":"https://api.github.com/users/MichaelRFairhurst","html_url":"https://github.com/MichaelRFairhurst","followers_url":"https://api.github.com/users/MichaelRFairhurst/followers","following_url":"https://api.github.com/users/MichaelRFairhurst/following{/other_user}","gists_url":"https://api.github.com/users/MichaelRFairhurst/gists{/gist_id}","starred_url":"https://api.github.com/users/MichaelRFairhurst/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MichaelRFairhurst/subscriptions","organizations_url":"https://api.github.com/users/MichaelRFairhurst/orgs","repos_url":"https://api.github.com/users/MichaelRFairhurst/repos","events_url":"https://api.github.com/users/MichaelRFairhurst/events{/privacy}","received_events_url":"https://api.github.com/users/MichaelRFairhurst/received_events","type":"User","site_admin":false},"labels":[{"id":805326370,"node_id":"MDU6TGFiZWw4MDUzMjYzNzA=","url":"https://api.github.com/repos/dart-lang/sdk/labels/crash","name":"crash","color":"b7200c","default":false},{"id":520924985,"node_id":"MDU6TGFiZWw1MjA5MjQ5ODU=","url":"https://api.github.com/repos/dart-lang/sdk/labels/front-end-fasta","name":"front-end-fasta","color":"d4c5f9","default":false},{"id":525029599,"node_id":"MDU6TGFiZWw1MjUwMjk1OTk=","url":"https://api.github.com/repos/dart-lang/sdk/labels/front-end-fasta-recovery","name":"front-end-fasta-recovery","color":"FF1493","default":false},{"id":1554977774,"node_id":"MDU6TGFiZWwxNTU0OTc3Nzc0","url":"https://api.github.com/repos/dart-lang/sdk/labels/fuzz-dust","name":"fuzz-dust","color":"999999","default":false},{"id":334529063,"node_id":"MDU6TGFiZWwzMzQ1MjkwNjM=","url":"https://api.github.com/repos/dart-lang/sdk/labels/type-bug","name":"type-bug","color":"ededed","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2019-10-21T23:23:10Z","updated_at":"2019-10-21T23:23:10Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"```dart\r\nmixin{=:\r\n```\r\n\r\n```\r\nUnhandled exception:\r\nUnimplementedError: name is an instance of _OperatorName in endClassConstructor\r\n#0      AstBuilder.endClassConstructor (package:analyzer/src/fasta/ast_builder.dart:688:7)\r\n#1      AstBuilder.endMixinConstructor (package:analyzer/src/fasta/ast_builder.dart:1738:5)\r\n#2      Parser.parseMethod (package:front_end/src/fasta/parser/parser.dart:3421:20)\r\n#3      Parser.parseInvalidOperatorDeclaration (package:front_end/src/fasta/parser/parser.dart:6477:19)\r\n#4      Parser.recoverFromInvalidMember (package:front_end/src/fasta/parser/parser.dart:6520:14)\r\n#5      Parser.parseClassOrMixinOrExtensionMemberImpl (package:front_end/src/fasta/parser/parser.dart:3165:16)\r\n#6      Parser.parseClassOrMixinOrExtensionBody (package:front_end/src/fasta/parser/parser.dart:2944:15)\r\n#7      Parser.parseMixin (package:front_end/src/fasta/parser/parser.dart:1973:13)\r\n#8      Parser.parseTopLevelKeywordDeclaration (package:front_end/src/fasta/parser/parser.dart:611:18)\r\n#9      Parser.parseTopLevelDeclarationImpl (package:front_end/src/fasta/parser/parser.dart:468:14)\r\n#10     Parser.parseUnit (package:front_end/src/fasta/parser/parser.dart:350:15)\r\n```"}}
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