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<h3>errno_name</h3>
<p> Tells the optimizer how to find the <span class="code">errno</span> identifier. </p>
<h5>Syntax</h5>
<p class="code">#pragma errno_name id | ...
</p>
<h5>Targets</h5>
All platforms.<br />
<h5>Remarks</h5>
<p>When this pragma is used, the optimizer can use the identifier <span class="code">errno</span> (either a macro or a function call) to optimize standard C library functions better. If not used, the optimizer makes worst-case assumptions about the effects of calls to the standard C library.</p>
<p class="note"><strong>NOTE</strong> The MSL C library already includes a use of this pragma, so you would only need to use it for third-party C libraries.</p>
<p class="code">If errno resolves to a variable name, specify it like this:</p>
<p class="listing"> #pragma errno_name _Errno</p>
<p>If errno is a function call accessing ordinarily inaccessible globals, use this form:</p>
<p class="listing"> #pragma errno_name ...</p>
<p> Otherwise, do not use this pragma as it can result in incorrect optimizations in your code.</p>
<p> This pragma does not correspond to any panel setting. By default, this pragma is unspecified (worst case assumption). </p>
<p></p>
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