core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas/p_warn_illtokenpasting.htm
author stechong
Wed, 20 Oct 2010 11:19:31 -0500
changeset 2165 2a7b5eccb0bc
parent 1641 2b3996fc09a1
permissions -rw-r--r--
Keeping PlatSim internal only.

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<h3>warn_illtokenpasting</h3>
<p>Controls whether a warning is issued with illegal token pasting.</p>
<h5>Syntax</h5>
  <p class="code">#pragma warn_illtokenpasting on | off | reset
  </p>
  <h5>Targets</h5>
  All platforms.<br />
  <h5>Remarks</h5>
  <p>An example of this is shown below:</p>
  <p class="code"> #define PTR(x) x##* / PTR(foo)</p>
  <p>Token pasting is used to create a single token. In this example, foo and x cannot be combined. Often the warning indicates the macro uses &ldquo;##&rdquo; unnecessarilly.</p>
  <p>This pragma does not correspond to any panel setting. To check this setting, use <span class="code">__option (warn_illtokenpasting)</span>, described in <a href="../symbols/sym_settings.htm">Checking Settings</a>. The default setting is <span class="code">on</span>.</p>
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