visus
/
toolchain-gcc-arm-embedded

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<!-- Copyright (C) 1988-2020 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 "Free Software" and "Free Software Needs
Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
and with the Back-Cover Texts as in (a) below.

(a) The FSF's Back-Cover Text is: "You are free to copy and modify
this GNU Manual.  Buying copies from GNU Press supports the FSF in
developing GNU and promoting software freedom." -->
<!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ -->
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Method Names in Commands (Debugging with GDB)</title>

<meta name="description" content="Method Names in Commands (Debugging with GDB)">
<meta name="keywords" content="Method Names in Commands (Debugging with GDB)">
<meta name="resource-type" content="document">
<meta name="distribution" content="global">
<meta name="Generator" content="makeinfo">
<link href="index.html#Top" rel="start" title="Top">
<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
<link href="Objective_002dC.html#Objective_002dC" rel="up" title="Objective-C">
<link href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" rel="next" title="The Print Command with Objective-C">
<link href="Objective_002dC.html#Objective_002dC" rel="prev" title="Objective-C">
<style type="text/css">
<!--
a.summary-letter {text-decoration: none}
blockquote.indentedblock {margin-right: 0em}
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
blockquote.smallquotation {font-size: smaller}
div.display {margin-left: 3.2em}
div.example {margin-left: 3.2em}
div.lisp {margin-left: 3.2em}
div.smalldisplay {margin-left: 3.2em}
div.smallexample {margin-left: 3.2em}
div.smalllisp {margin-left: 3.2em}
kbd {font-style: oblique}
pre.display {font-family: inherit}
pre.format {font-family: inherit}
pre.menu-comment {font-family: serif}
pre.menu-preformatted {font-family: serif}
pre.smalldisplay {font-family: inherit; font-size: smaller}
pre.smallexample {font-size: smaller}
pre.smallformat {font-family: inherit; font-size: smaller}
pre.smalllisp {font-size: smaller}
span.nolinebreak {white-space: nowrap}
span.roman {font-family: initial; font-weight: normal}
span.sansserif {font-family: sans-serif; font-weight: normal}
ul.no-bullet {list-style: none}
-->
</style>


</head>

<body lang="en">
<a name="Method-Names-in-Commands"></a>
<div class="header">
<p>
Next: <a href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" accesskey="n" rel="next">The Print Command with Objective-C</a>, Up: <a href="Objective_002dC.html#Objective_002dC" accesskey="u" rel="up">Objective-C</a> &nbsp; [<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>
</div>
<hr>
<a name="Method-Names-in-Commands-1"></a>
<h4 class="subsubsection">15.4.4.1 Method Names in Commands</h4>

<p>The following commands have been extended to accept Objective-C method
names as line specifications:
</p>
<a name="index-clear_002c-and-Objective_002dC"></a>
<a name="index-break_002c-and-Objective_002dC"></a>
<a name="index-info-line_002c-and-Objective_002dC"></a>
<a name="index-jump_002c-and-Objective_002dC"></a>
<a name="index-list_002c-and-Objective_002dC"></a>
<ul>
<li> <code>clear</code>
</li><li> <code>break</code>
</li><li> <code>info line</code>
</li><li> <code>jump</code>
</li><li> <code>list</code>
</li></ul>

<p>A fully qualified Objective-C method name is specified as
</p>
<div class="smallexample">
<pre class="smallexample">-[<var>Class</var> <var>methodName</var>]
</pre></div>

<p>where the minus sign is used to indicate an instance method and a
plus sign (not shown) is used to indicate a class method.  The class
name <var>Class</var> and method name <var>methodName</var> are enclosed in
brackets, similar to the way messages are specified in Objective-C
source code.  For example, to set a breakpoint at the <code>create</code>
instance method of class <code>Fruit</code> in the program currently being
debugged, enter:
</p>
<div class="smallexample">
<pre class="smallexample">break -[Fruit create]
</pre></div>

<p>To list ten program lines around the <code>initialize</code> class method,
enter:
</p>
<div class="smallexample">
<pre class="smallexample">list +[NSText initialize]
</pre></div>

<p>In the current version of <small>GDB</small>, the plus or minus sign is
required.  In future versions of <small>GDB</small>, the plus or minus
sign will be optional, but you can use it to narrow the search.  It
is also possible to specify just a method name:
</p>
<div class="smallexample">
<pre class="smallexample">break create
</pre></div>

<p>You must specify the complete method name, including any colons.  If
your program&rsquo;s source files contain more than one <code>create</code> method,
you&rsquo;ll be presented with a numbered list of classes that implement that
method.  Indicate your choice by number, or type &lsquo;<samp>0</samp>&rsquo; to exit if
none apply.
</p>
<p>As another example, to clear a breakpoint established at the
<code>makeKeyAndOrderFront:</code> method of the <code>NSWindow</code> class, enter:
</p>
<div class="smallexample">
<pre class="smallexample">clear -[NSWindow makeKeyAndOrderFront:]
</pre></div>

<hr>
<div class="header">
<p>
Next: <a href="The-Print-Command-with-Objective_002dC.html#The-Print-Command-with-Objective_002dC" accesskey="n" rel="next">The Print Command with Objective-C</a>, Up: <a href="Objective_002dC.html#Objective_002dC" accesskey="u" rel="up">Objective-C</a> &nbsp; [<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>
</div>


</body>
</html>