{"issue":{"created_at":"2011-12-14T20:56:07Z","state":"open","updated_at":"2011-12-14T20:57:45Z","user":{"gravatar_id":"40f438095ffe6ce6a6ccffc4837e80d2","id":36872,"url":"https://api.github.com/users/abscondment","login":"abscondment","avatar_url":"https://secure.gravatar.com/avatar/40f438095ffe6ce6a6ccffc4837e80d2?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png"},"comments":1,"body":"Updating my project to 0.0.10 from 0.0.9 showed a new compilation snag:\r\n\r\n```\r\nMirah::InternalCompilerError: undefined method `compatible?' for nil:NilClass\r\n         infer at /Users/brendan/code/mirah/lib/mirah/typer/simple.rb:280\r\n         infer at /Users/brendan/code/mirah/lib/mirah/ast/flow.rb:376\r\n    resolve_if at /Users/brendan/code/mirah/lib/mirah/ast.rb:248\r\n         infer at /Users/brendan/code/mirah/lib/mirah/ast/flow.rb:374\r\n         infer at /Users/brendan/code/mirah/lib/mirah/typer/simple.rb:275\r\n         infer at /Users/brendan/code/mirah/lib/mirah/ast/structure.rb:34\r\n          each at org/jruby/RubyArray.java:1614\r\n```\r\n\r\nGit bisect between 0.0.9 and 0.0.10 pins it on 677e4aa29d\r\n\r\nI don't quite grok what's going on here, but I have a test case to help in fixing things: https://gist.github.com/1478479","assignee":{"gravatar_id":"5e60ac32af93ff0f426c980e43f221e7","id":7378,"url":"https://api.github.com/users/baroquebobcat","login":"baroquebobcat","avatar_url":"https://secure.gravatar.com/avatar/5e60ac32af93ff0f426c980e43f221e7?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png"},"pull_request":{"patch_url":null,"html_url":null,"diff_url":null},"id":2558238,"labels":[],"number":157,"title":"InternalCompilerError: undefined method `compatible?' for nil:NilClass","html_url":"https://github.com/mirah/mirah/issues/157","closed_at":null,"url":"https://api.github.com/repos/mirah/mirah/issues/157","milestone":null},"action":"created","comment":{"created_at":"2011-12-14T20:57:45Z","updated_at":"2011-12-14T20:57:45Z","user":{"gravatar_id":"40f438095ffe6ce6a6ccffc4837e80d2","id":36872,"url":"https://api.github.com/users/abscondment","login":"abscondment","avatar_url":"https://secure.gravatar.com/avatar/40f438095ffe6ce6a6ccffc4837e80d2?d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-140.png"},"body":"Interestingly, if I tweak the return value/type of that `while` block, this error goes away.","id":3149448,"url":"https://api.github.com/repos/mirah/mirah/issues/comments/3149448"}}