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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
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+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml"><head><title>Chapter 5.  Diagnostics</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.76.1"/><meta name="keywords" content="&#10; ISO C++&#10; , &#10; library&#10; "/><link rel="home" href="../spine.html" title="The GNU C++ Library"/><link rel="up" href="bk01pt02.html" title="Part II.  Standard Contents"/><link rel="prev" href="termination.html" title="Termination"/><link rel="next" href="bk01pt02ch05s02.html" title="Concept Checking"/></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 5. 
+ Diagnostics
+
+</th></tr><tr><td align="left"><a accesskey="p" href="termination.html">Prev</a> </td><th width="60%" align="center">Part II. 
+ Standard Contents
+ </th><td align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr></table><hr/></div><div class="chapter" title="Chapter 5.  Diagnostics"><div class="titlepage"><div><div><h2 class="title"><a id="std.diagnostics"/>Chapter 5. 
+ Diagnostics
+ <a id="id472366" class="indexterm"/>
+</h2></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions">Exceptions</a></span></dt><dd><dl><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.api">API Reference</a></span></dt><dt><span class="section"><a href="diagnostics.html#std.diagnostics.exceptions.data">Adding Data to <code class="classname">exception</code></a></span></dt></dl></dd><dt><span class="section"><a href="bk01pt02ch05s02.html">Concept Checking</a></span></dt></dl></div><div class="section" title="Exceptions"><div class="titlepage"><div><div><h2 class="title"><a id="std.diagnostics.exceptions"/>Exceptions</h2></div></div></div><div class="section" title="API Reference"><div class="titlepage"><div><div><h3 class="title"><a id="std.diagnostics.exceptions.api"/>API Reference</h3></div></div></div><p>
+ All exception objects are defined in one of the standard header
+ files: <code class="filename">exception</code>,
+ <code class="filename">stdexcept</code>, <code class="filename">new</code>, and
+ <code class="filename">typeinfo</code>.
+ </p><p>
+ The base exception object is <code class="classname">exception</code>,
+ located in <code class="filename">exception</code>. This object has no
+ <code class="classname">string</code> member.
+ </p><p>
+ Derived from this are several classes that may have a
+ <code class="classname">string</code> member: a full hierarchy can be
+ found in the source documentation.
+ </p><p>
+ Full API details.
+ </p></div><div class="section" title="Adding Data to exception"><div class="titlepage"><div><div><h3 class="title"><a id="std.diagnostics.exceptions.data"/>Adding Data to <code class="classname">exception</code></h3></div></div></div><p>
+ The standard exception classes carry with them a single string as
+ data (usually describing what went wrong or where the 'throw' took
+ place). It's good to remember that you can add your own data to
+ these exceptions when extending the hierarchy:
+ </p><pre class="programlisting">
+ struct My_Exception : public std::runtime_error
+ {
+ public:
+ My_Exception (const string&amp; whatarg)
+ : std::runtime_error(whatarg), e(errno), id(GetDataBaseID()) { }
+ int errno_at_time_of_throw() const { return e; }
+ DBID id_of_thing_that_threw() const { return id; }
+ protected:
+ int e;
+ DBID id; // some user-defined type
+ };
+ </pre></div></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td align="left"><a accesskey="p" href="termination.html">Prev</a> </td><td align="center"><a accesskey="u" href="bk01pt02.html">Up</a></td><td align="right"> <a accesskey="n" href="bk01pt02ch05s02.html">Next</a></td></tr><tr><td align="left" valign="top">Termination </td><td align="center"><a accesskey="h" href="../spine.html">Home</a></td><td align="right" valign="top"> Concept Checking</td></tr></table></div></body></html>