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137 lines
6.0 KiB
HTML
137 lines
6.0 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Summary (Debugging with GDB)</title>
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<meta name="description" content="Summary (Debugging with GDB)">
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<meta name="keywords" content="Summary (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="index.html#Top" rel="up" title="Top">
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<link href="Free-Software.html#Free-Software" rel="next" title="Free Software">
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<link href="index.html#Top" rel="prev" title="Top">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Summary"></a>
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<div class="header">
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<p>
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Next: <a href="Sample-Session.html#Sample-Session" accesskey="n" rel="next">Sample Session</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Summary-of-GDB"></a>
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<h2 class="unnumbered">Summary of <small>GDB</small></h2>
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<p>The purpose of a debugger such as <small>GDB</small> is to allow you to see what is
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going on “inside” another program while it executes—or what another
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program was doing at the moment it crashed.
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</p>
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<p><small>GDB</small> can do four main kinds of things (plus other things in support of
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these) to help you catch bugs in the act:
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</p>
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<ul>
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<li> Start your program, specifying anything that might affect its behavior.
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</li><li> Make your program stop on specified conditions.
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</li><li> Examine what has happened, when your program has stopped.
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</li><li> Change things in your program, so you can experiment with correcting the
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effects of one bug and go on to learn about another.
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</li></ul>
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<p>You can use <small>GDB</small> to debug programs written in C and C<tt>++</tt>.
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For more information, see <a href="Supported-Languages.html#Supported-Languages">Supported Languages</a>.
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For more information, see <a href="C.html#C">C and C++</a>.
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</p>
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<p>Support for D is partial. For information on D, see
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<a href="D.html#D">D</a>.
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</p>
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<a name="index-Modula_002d2"></a>
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<p>Support for Modula-2 is partial. For information on Modula-2, see
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<a href="Modula_002d2.html#Modula_002d2">Modula-2</a>.
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</p>
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<p>Support for OpenCL C is partial. For information on OpenCL C, see
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<a href="OpenCL-C.html#OpenCL-C">OpenCL C</a>.
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</p>
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<a name="index-Pascal"></a>
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<p>Debugging Pascal programs which use sets, subranges, file variables, or
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nested functions does not currently work. <small>GDB</small> does not support
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entering expressions, printing values, or similar features using Pascal
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syntax.
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</p>
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<a name="index-Fortran"></a>
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<p><small>GDB</small> can be used to debug programs written in Fortran, although
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it may be necessary to refer to some variables with a trailing
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underscore.
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</p>
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<p><small>GDB</small> can be used to debug programs written in Objective-C,
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using either the Apple/NeXT or the GNU Objective-C runtime.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Free-Software.html#Free-Software" accesskey="1">Free Software</a>:</td><td> </td><td align="left" valign="top">Freely redistributable software
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Free-Documentation.html#Free-Documentation" accesskey="2">Free Documentation</a>:</td><td> </td><td align="left" valign="top">Free Software Needs Free Documentation
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Contributors.html#Contributors" accesskey="3">Contributors</a>:</td><td> </td><td align="left" valign="top">Contributors to GDB
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</td></tr>
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</table>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Sample-Session.html#Sample-Session" accesskey="n" rel="next">Sample Session</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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