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Thread-Topic: I'm a beginner and need help about "Segmentation fault" error. Thread-Index: AQHWtGg4BUd3GDWKakKKflllT1h5vam73k6AgAPWuPM= Date: Mon, 9 Nov 2020 11:55:10 +0000 Message-ID: References: <394886388.1091427.1604422440532.ref@mail.yahoo.com> <394886388.1091427.1604422440532@mail.yahoo.com> <780402530.1737902.1604686257419@mail.yahoo.com>, In-Reply-To: Accept-Language: en-GB, en-US Content-Language: en-GB X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [46.7.106.62] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 544a7404-8412-4488-db09-08d884a64fcb x-ms-traffictypediagnostic: CO1PR11MB4884: x-microsoft-antispam-prvs: x-bypassexternaltag: True x-ms-oob-tlc-oobclassifiers: OLM:10000; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 88Dl+Of3wx8NIeLFkO4b6hIFGdVkI0moxmg9ua1Hbz1Iqk699ap9jXezE9EEK5iZaeHa84VcDpi+/h2ewEdJBV9BHHUQnzBKfQTkT/udOdcOuVSeTtEBOSROWmEBJuPtQIP+UuOuSM0/uazbr4su17mQbq9hrBXC11ks2pT1Gbv2+q1Falputp+NZIuF+NpKgboxu9Vq87jzymQRr88LLk/p+O+t6xsZBcbkfDVCjbet8K+BFJJ4DnfjgYSs1HnUpGL4w8QMBjKZSddI8ogJs8YCj+DM7hLrj0TVw9DP8euUS76jcaCmTyseoYI4IiRK x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:MWHPR1101MB2270.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFS:(346002)(396003)(376002)(39860400002)(136003)(366004)(66446008)(6506007)(53546011)(110136005)(64756008)(83380400001)(26005)(76116006)(8676002)(55016002)(71200400001)(86362001)(9686003)(186003)(19627405001)(316002)(66556008)(5660300002)(2906002)(66946007)(91956017)(478600001)(7696005)(66476007)(52536014)(8936002)(33656002); DIR:OUT; SFP:1101; x-ms-exchange-antispam-messagedata: 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 x-ms-exchange-transport-forked: True MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MWHPR1101MB2270.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 544a7404-8412-4488-db09-08d884a64fcb X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Nov 2020 11:55:10.9673 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: nB38Nnc3KPU7Eyfq3aro7Eo+j7+XDTJQbl3NOg200309uKQkrHnHtxeoEWkYlpMo/Jm71pnipoAyPd8RDTJLpD9eub3+4C7Ub31IcAIuoAc= X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO1PR11MB4884 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, HTML_MESSAGE, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_PASS, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 09 Nov 2020 11:55:19 -0000 And when the -g is enabled, do not strip the symbols from the binary. So re= move '-s' if you have in the compilation process, and remove 'strip' comman= ds which might be triggered on the compiled object files after they were co= mpiled. ________________________________ From: Gdb on behalf of Simon Marchi Sent: 07 November 2020 01:16 To: Jason Long ; gdb@sourceware.org Subject: Re: I'm a beginner and need help about "Segmentation fault" error. EXTERNAL EMAIL: Do not click links or open attachments unless you know the = content is safe On 2020-11-06 1:10 p.m., Jason Long via Gdb wrote: > Thank you. > I did what you said: > > (gdb) run > Starting program: /usr/local/bin/ramme > [Thread debugging using libthread_db enabled] > Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1"= . > > > Program received signal SIGSEGV, Segmentation fault. > 0x0000000000e6e0c0 in ?? () > (gdb) backtrace > #0 0x0000000000e6e0c0 in ?? () > #1 0x00007ffff7d85462 in node::http2::Http2Session::Callbacks::Callbacks= (bool) > () from /opt/Ramme/libnode.so > #2 0x00007ffff7d85525 in ?? () from /opt/Ramme/libnode.so > #3 0x00007ffff7fe437a in call_init (l=3D, argc=3Dargc@ent= ry=3D1, > argv=3Dargv@entry=3D0x7fffffffe248, env=3Denv@entry=3D0x7fffffffe258) > at dl-init.c:72 > #4 0x00007ffff7fe4476 in call_init (env=3D0x7fffffffe258, argv=3D0x7ffff= fffe248, > argc=3D1, l=3D) at dl-init.c:30 > #5 _dl_init (main_map=3D0x7ffff7ffe190, argc=3D1, argv=3D0x7fffffffe248, > env=3D0x7fffffffe258) at dl-init.c:119 > #6 0x00007ffff7fd60ca in _dl_start_user () from /lib64/ld-linux-x86-64.s= o.2 > #7 0x0000000000000001 in ?? () > #8 0x00007fffffffe52b in ?? () > #9 0x0000000000000000 in ?? () > > > What is the next step? The next step would be to compile your program with debug info (-g3) and without optimization (-O0). I also suggest you search and read for any GDB tutorial out there, it will walk you though these steps. Simon