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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-7E967B81-2DBF-5A89-B74B-93FEA5515685" xml:lang="en"><title>How

to use new with automatic leave on failure</title><shortdesc>Provides code snippets to show you how to use <codeph>new</codeph> with

automatic leave on failure</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>The case of <codeph>new</codeph> failing is so common that a version of <codeph>operator

new()</codeph> has been written which takes a single parameter <codeph>ELeave</codeph>,

indicating that it must leave if it was unable to allocate memory.</p>

<p>Use <codeph>operator new()</codeph> so that there is no need to check the

result of the <codeph>new</codeph>.</p>

<codeblock id="GUID-E898C802-28E7-5330-B4F1-08829BECB4AE" xml:space="preserve">void doExampleL()

 {

 // attempt to allocate, leave if could not

 CExample* myExample = new (ELeave) CExample;

 // new (ELeave) replaces new followed by check

 // do something

 myExample->iInt = 5;

 testConsole.Printf(_LIT("Value of iInt is %d.\n"),myExample->iInt);

 // delete

 delete myExample;

 }</codeblock>

</conbody></concept>