and <tt>unavailable</tt> attributes. For example:</p>
<blockquote>
-<pre>void explode(void) __attribute__((deprecated("extremely unsafe!!!")));</pre>
+<pre>void explode(void) __attribute__((deprecated("extremely unsafe, use 'combust' instead!!!")));</pre>
</blockquote>
<p>If the deprecated or unavailable declaration is used, the message
will be incorporated into the appropriate diagnostic:</p>
<blockquote>
-<pre>harmless.c:4:3: warning: 'explode' is deprecated: extremely unsafe!!! [-Wdeprecated-declarations]
+<pre>harmless.c:4:3: warning: 'explode' is deprecated: extremely unsafe, use 'combust' instead!!! [-Wdeprecated-declarations]
explode();
^</pre>
</blockquote>