{"action":"closed","issue":{"url":"https://api.github.com/repos/linbox-team/fflas-ffpack/issues/123","repository_url":"https://api.github.com/repos/linbox-team/fflas-ffpack","labels_url":"https://api.github.com/repos/linbox-team/fflas-ffpack/issues/123/labels{/name}","comments_url":"https://api.github.com/repos/linbox-team/fflas-ffpack/issues/123/comments","events_url":"https://api.github.com/repos/linbox-team/fflas-ffpack/issues/123/events","html_url":"https://github.com/linbox-team/fflas-ffpack/issues/123","id":253296897,"number":123,"title":"test-ftrmm with ENABLE_ALL_CHECKINGS memory issues","user":{"login":"ClementPernet","id":10073220,"avatar_url":"https://avatars3.githubusercontent.com/u/10073220?v=4","gravatar_id":"","url":"https://api.github.com/users/ClementPernet","html_url":"https://github.com/ClementPernet","followers_url":"https://api.github.com/users/ClementPernet/followers","following_url":"https://api.github.com/users/ClementPernet/following{/other_user}","gists_url":"https://api.github.com/users/ClementPernet/gists{/gist_id}","starred_url":"https://api.github.com/users/ClementPernet/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ClementPernet/subscriptions","organizations_url":"https://api.github.com/users/ClementPernet/orgs","repos_url":"https://api.github.com/users/ClementPernet/repos","events_url":"https://api.github.com/users/ClementPernet/events{/privacy}","received_events_url":"https://api.github.com/users/ClementPernet/received_events","type":"User","site_admin":false},"labels":[{"id":231117548,"url":"https://api.github.com/repos/linbox-team/fflas-ffpack/labels/bug","name":"bug","color":"fc2929","default":true}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":1,"created_at":"2017-08-28T11:07:21Z","updated_at":"2018-02-27T12:13:34Z","closed_at":"2018-02-27T12:13:34Z","author_association":"CONTRIBUTOR","body":"When compiling `test-ftrmm` with ` ENABLE_ALL_CHECKINGS`, the test-suite passes on almost all machines I know of, but travis fails with segfaults:\r\nhttps://travis-ci.org/linbox-team/fflas-ffpack/jobs/268336469\r\n\r\nvalgrind reports a bunch of \"jump depends on unitilialized values\" issues:\r\n```\r\n[pernet@niqually] :~/Logiciels/fflas-ffpack/tests > valgrind ./test-ftrmm\r\n==23115== Memcheck, a memory error detector\r\n==23115== Copyright (C) 2002-2015, and GNU GPL'd, by Julian Seward et al.\r\n==23115== Using Valgrind-3.11.0 and LibVEX; rerun with -h for copyright info\r\n==23115== Command: ./test-ftrmm\r\n==23115== \r\nChecking with Modular<double> mod 3685883\r\n==23115== Conditional jump or move depends on uninitialised value(s)\r\n==23115==    at 0x43FD3F: fiszero<Givaro::Modular<double, double> > (fflas_level1.inl:213)\r\n==23115==    by 0x43FD3F: check (checker_fgemm.inl:89)\r\n==23115==    by 0x43FD3F: Givaro::Modular<double, double>::Element_ptr FFLAS::fgemm<Givaro::Modular<double, double> >(Givaro::Modular<double, double> const&, FFLAS::FFLAS_TRANSPOSE, FFLAS::FFLAS_TRANSPOSE, unsigned long, unsigned long, unsigned long, Givaro::Modular<double, double>::Element, Givaro::Modular<double, double>::ConstElement_ptr, unsigned long, Givaro::Modular<double, double>::ConstElement_ptr, unsigned long, Givaro::Modular<double, double>::Element, Givaro::Modular<double, double>::Element_ptr, unsigned long) (fflas_fgemm.inl:344)\r\n==23115==    by 0x443A73: bool check_ftrmm<Givaro::Modular<double, double>, Givaro::ModularRandIter<Givaro::Modular<double, double> > >(Givaro::Modular<double, double> const&, unsigned long, unsigned long, Givaro::Modular<double, double>::Element const&, FFLAS::FFLAS_SIDE, FFLAS::FFLAS_UPLO, FFLAS::FFLAS_TRANSPOSE, FFLAS::FFLAS_DIAG, Givaro::ModularRandIter<Givaro::Modular<double, double> >&) (test-ftrmm.C:90)\r\n==23115==    by 0x443DAE: bool run_with_field<Givaro::Modular<double, double> >(Givaro::Integer, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) (test-ftrmm.C:129)\r\n==23115==    by 0x4046D7: main (test-ftrmm.C:178)\r\n==23115== \r\n\r\n```\r\nSo far I was unable to find the cause of the bug."}}
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