From owner-freebsd-questions@FreeBSD.ORG Sun Sep 18 12:23:42 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 84724106564A for ; Sun, 18 Sep 2011 12:23:42 +0000 (UTC) (envelope-from unga888@yahoo.com) Received: from nm19-vm0.bullet.mail.bf1.yahoo.com (nm19-vm0.bullet.mail.bf1.yahoo.com [98.139.213.162]) by mx1.freebsd.org (Postfix) with SMTP id 1FE488FC08 for ; Sun, 18 Sep 2011 12:23:41 +0000 (UTC) Received: from [98.139.212.151] by nm19.bullet.mail.bf1.yahoo.com with NNFMP; 18 Sep 2011 12:10:05 -0000 Received: from [98.139.212.224] by tm8.bullet.mail.bf1.yahoo.com with NNFMP; 18 Sep 2011 12:10:05 -0000 Received: from [127.0.0.1] by omp1033.mail.bf1.yahoo.com with NNFMP; 18 Sep 2011 12:10:05 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 572397.55633.bm@omp1033.mail.bf1.yahoo.com Received: (qmail 72301 invoked by uid 60001); 18 Sep 2011 12:10:05 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1316347805; bh=07FYB8Wd1V8TMs8LNf69FUI4EJpcD4YT094DoGmj+ww=; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Subject:To:MIME-Version:Content-Type; b=2rATAO6HFGZ4XmIxDBIlubIuYm/rMiAYz/4M3ABsjRtijWU+ZqwalxR1zmzpteE16lcuy85+XqIAcGmSGTAVOFK+YZomAJXSEgtbwrSCe/WhJe4ITN8GHEtzQcNVD2zLr+YCaXW+gS670KllhaswFXYltUfdaaS86qXlHvuDdcM= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:Message-ID:Date:From:Subject:To:MIME-Version:Content-Type; b=k0Bwm/I72gD13VH1GO6pmfuEWKDD/E3sRH/n127pHUaUq40y82Q678UaOggXo9t5ykoIQN/hsemSh30cryzLRw2pNeQ1I7Z59+pMh7/rX9poSx/RGXvt64xgE+NQ83T7rWHZqE2OkbpIJwspzxTfVVVnFLkO2TZCEPtTr02iMu4=; X-YMail-OSG: ji0e85cVM1lpAxGhI4EW5oMVMp4c0GcMfkcGmATrPOmlO_Q jN2Qa_mEMzW9OpKUbrf0R9V5XfGqskeXEeZEj2C3PrF2X2Zjbv6Qn_9vUfRe ue1uIHknR1AtpydAW6qg6Z1pbwuXzF_egGW12NjYZyFx.F_hPm9u61kjwzMV ZnE5Ijm3H4r_GpWliGpLAlGvURi3ZUydpqjaA5sNlviUhU1FYM9QlX0KbCju AVyCg6s8sb5S3iiIpBrVrjAxDbbl4zraeFW8rfS_6xmBg4IqhgNvU8egcqPh Gc.T3hGgQecOv.5XHqCm7nPQ.gwhXAjAUcW.YpPkdEL9NryT8Q_jWSPmj3JC XKbDb9mN8LLQUeeockumaYrIC0JRI_JpqOa3Ng_6ZFwapglZacux81oBgy7B TN_HWuW32UM6uTUMdlGtt0p7NOnH7SnohJXKCEtiDaSdG Received: from [112.135.175.208] by web160112.mail.bf1.yahoo.com via HTTP; Sun, 18 Sep 2011 05:10:05 PDT X-Mailer: YahooMailClassic/14.0.5 YahooMailWebService/0.8.114.317681 Message-ID: <1316347805.62034.YahooMailClassic@web160112.mail.bf1.yahoo.com> Date: Sun, 18 Sep 2011 05:10:05 -0700 (PDT) From: Unga To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: Segmentation fault, _malloc_prefork () - debugging help needed X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 18 Sep 2011 12:23:42 -0000 Hi all I'm developing an multi-threaded application on FreeBSD. When it is running for sometime, it develops a Segmentation fault. The ddd debugger shows following: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 296c6580 (LWP 100137)] 0x28ee390e in _malloc_prefork () from /lib/libc.so.7 How could I know the exact line in source where this issue develops? Many thanks in advance. Best regards Unga