git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@164758
13f79535-47bb-0310-9956-
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fulfilled in order to allow access. It's a very powerful directive because the
requirement specification is an arbitrarily complex boolean expression
containing any number of access checks.</p>
+<div class="warning">
+<p>The implementation of <code>SSLRequire</code> is not thread safe.
+ Using <code>SSLRequire</code> inside <code>.htaccess</code> files
+ on a threaded <a href="../mpm.html">MPM</a> may cause random crashes.
+</p>
+</div>
<p>
The <em>expression</em> must match the following syntax (given as a BNF
grammar notation):</p>