<html lang="en"> <head> <title>GFORTRAN_ERROR_BACKTRACE - The GNU Fortran Compiler</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="The GNU Fortran Compiler"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Runtime.html#Runtime" title="Runtime"> <link rel="prev" href="GFORTRAN_005fERROR_005fDUMPCORE.html#GFORTRAN_005fERROR_005fDUMPCORE" title="GFORTRAN_ERROR_DUMPCORE"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with the Invariant Sections being ``Funding Free Software'', the Front-Cover Texts being (a) (see below), and with the Back-Cover Texts being (b) (see below). A copy of the license is included in the section entitled ``GNU Free Documentation License''. (a) The FSF's Front-Cover Text is: A GNU Manual (b) The FSF's Back-Cover Text is: You have freedom to copy and modify this GNU Manual, like GNU software. Copies published by the Free Software Foundation raise funds for GNU development.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="GFORTRAN_ERROR_BACKTRACE"></a> <a name="GFORTRAN_005fERROR_005fBACKTRACE"></a> <p> Previous: <a rel="previous" accesskey="p" href="GFORTRAN_005fERROR_005fDUMPCORE.html#GFORTRAN_005fERROR_005fDUMPCORE">GFORTRAN_ERROR_DUMPCORE</a>, Up: <a rel="up" accesskey="u" href="Runtime.html#Runtime">Runtime</a> <hr> </div> <h3 class="section">3.14 <samp><span class="env">GFORTRAN_ERROR_BACKTRACE</span></samp>—Show backtrace on run-time errors</h3> <p>If the <samp><span class="env">GFORTRAN_ERROR_BACKTRACE</span></samp> variable is set to ‘<samp><span class="samp">y</span></samp>’, ‘<samp><span class="samp">Y</span></samp>’ or ‘<samp><span class="samp">1</span></samp>’ (only the first letter is relevant) then a backtrace is printed when a run-time error occurs. To disable the backtracing, set the variable to ‘<samp><span class="samp">n</span></samp>’, ‘<samp><span class="samp">N</span></samp>’, ‘<samp><span class="samp">0</span></samp>’. Default is not to print a backtrace unless the <samp><span class="option">-fbacktrace</span></samp> compile option was used. <!-- ===================================================================== --> <!-- PART II: LANGUAGE REFERENCE --> <!-- ===================================================================== --> <!-- --> <!-- Fortran 2003 and 2008 Status --> <!-- --> </body></html>