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STATIC_ASSERT().

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Andrew Johnson
2009-08-04 19:51:19 +00:00
parent c035566d7d
commit e387c06f59
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<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=iso-8859-1">
<title>EPICS Base R3.14.x Release Notes</title>
<title>EPICS Base R3.14.11-CVS Release Notes</title>
</head>
<body lang="en">
<h1 align="center">EPICS Base Release 3.14.1x</h1>
<h1 align="center">EPICS Base Release 3.14.11-CVS</h1>
<h2 align="center">Changes between 3.14.10 and 3.14.11</h2>
<!-- Insert new items below here ... -->
<h4>Compile-time assertions</h4>
<p>A new macro has been added to epicsAssert.h which performs assertion checks
at compile-time. <tt>STATIC_ASSERT(<i>expr</i>)</tt> can only be used when
<tt><i>expr</i></tt> can be evaluated by the compiler, and will cause the
compilation to fail if it evaluates to false. The resulting compiler error
message might appear a little obscure, but it does provide some explanation and
contains the line where the failure was discovered. Future versions of the C++
standard will probably contain a similar facility <tt>static_assert(<i>expr</i>,
<i>message</i>)</tt> but will require compiler support to be implemented.</p>
<h4>Several changes made to dbDefs.h</h4>
<p>The definitions for the macros <tt>YES</tt>, <tt>NO</tt>, <tt>NONE</tt>,