1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 4<title>Macro BOOST_CONTRACT_ON_MISSING_CHECK_DECL</title> 5<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="Chapter 1. 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Therefore, by default (i.e., when this macro is not defined) this library calls <code class="computeroutput">BOOST_ASSERT(false)</code> in those cases. If this macro is defined, this library will execute the code expanded by this macro instead of calling <code class="computeroutput">BOOST_ASSERT(false)</code> (if programmers prefer to throw an exception, etc.).</p> 38<p>This macro can also be defined to be any block of code (and use empty curly brackets <code class="computeroutput">{}</code> to generate no error, not recommended), for example (on GCC): </p> 39<pre class="programlisting"><span class="identifier">gcc</span> <span class="special">-</span><span class="identifier">DBOOST_CONTRACT_ON_MISSING_CHECK_DECL</span><span class="special">=</span><span class="char">'{ throw std::logic_error("missing contract check declaration"); }'</span> <span class="special">...</span> 40</pre> 41<p><span class="bold"><strong>See Also:</strong></span></p> 42<p> <a class="link" href="boost_contract/tutorial.html" title="Tutorial"> Tutorial</a> </p> 43<p> 44</p> 45<p> 46</p> 47</div> 48</div> 49<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 50<td align="left"></td> 51<td align="right"><div class="copyright-footer">Copyright © 2008-2019 Lorenzo Caminiti<p> 52 Distributed under the Boost Software License, Version 1.0 (see accompanying 53 file LICENSE_1_0.txt or a copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) 54 </p> 55</div></td> 56</tr></table> 57<hr> 58<div class="spirit-nav"> 59<a accesskey="p" href="BOOST_CONTRACT_PERMISSIVE.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="reference.html#header.boost.contract.core.config_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="BOOST_CO_idm46268585497648.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 60</div> 61</body> 62</html> 63
