{"action":"opened","issue":{"url":"https://api.github.com/repos/AbsInt/CompCert/issues/177","repository_url":"https://api.github.com/repos/AbsInt/CompCert","labels_url":"https://api.github.com/repos/AbsInt/CompCert/issues/177/labels{/name}","comments_url":"https://api.github.com/repos/AbsInt/CompCert/issues/177/comments","events_url":"https://api.github.com/repos/AbsInt/CompCert/issues/177/events","html_url":"https://github.com/AbsInt/CompCert/issues/177","id":213846772,"number":177,"title":"ccomp seems to go on for a long while... had to kill it","user":{"login":"msprotz","id":10673049,"avatar_url":"https://avatars2.githubusercontent.com/u/10673049?v=3","gravatar_id":"","url":"https://api.github.com/users/msprotz","html_url":"https://github.com/msprotz","followers_url":"https://api.github.com/users/msprotz/followers","following_url":"https://api.github.com/users/msprotz/following{/other_user}","gists_url":"https://api.github.com/users/msprotz/gists{/gist_id}","starred_url":"https://api.github.com/users/msprotz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/msprotz/subscriptions","organizations_url":"https://api.github.com/users/msprotz/orgs","repos_url":"https://api.github.com/users/msprotz/repos","events_url":"https://api.github.com/users/msprotz/events{/privacy}","received_events_url":"https://api.github.com/users/msprotz/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-03-13T17:50:32Z","updated_at":"2017-03-13T17:50:32Z","closed_at":null,"body":"Hello,\r\n\r\nI need help figuring things out. If you unzip the attached file then `cd ccomp`, then the following command does not terminate.\r\n\r\n```\r\njonathan@chartreuse:/tmp/ccomp $ ccomp -g -fstruct-passing -I. -c Curve25519.c -o Curve25519.o\r\n```\r\n\r\n[ccomp.zip](https://github.com/AbsInt/CompCert/files/839148/ccomp.zip)\r\n\r\nI left it running for a couple minutes, then had to kill the process. It's using 100% of my CPU. This is on OSX, using the `ccomp` from Homerbrew, version 3.0.\r\n\r\nI do understand that all bets are off with `-fstruct-passing`, but I'm still surprised that this should send compcert off the rails. The code does compile using other off-the-shelf compilers and `clang` or `gcc` do not seem to exhibit any strange behavior when compiling this file.\r\n\r\nThanks,\r\n\r\nJonathan"}}
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