| author | Deepak Modgil <Deepak.Modgil@Nokia.com> |
| Fri, 03 Apr 2009 23:33:03 +0100 | |
| changeset 0 | fb279309251b |
| child 1641 | 2b3996fc09a1 |
| permissions | -rw-r--r-- |
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fb279309251b
DP tools release version Revision: 200912
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"> |
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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> |
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<head> |
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /> |
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<meta http-equiv="Content-Style-Type" content="text/css" /> |
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<meta name="LASTUPDATED" content="06/17/05 11:09:43" /> |
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<title>warn_impl_s2u_conv</title> |
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<link rel="StyleSheet" href="../../book.css" type="text/css"/> |
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</head> |
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<body> |
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<h3>warn_impl_s2u_conv</h3> |
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<p>Controls the issuing of warnings for implicit conversions between the signed int and unsigned int data types.</p> |
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<h5>Syntax</h5> |
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<p class="code">#pragma warn_impl_s2u_conv on | off | reset |
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</p> |
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<h5>Targets</h5> |
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All platforms.<br /> |
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<h5>Remarks</h5> |
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<p>If you enable this pragma, the compiler issues a warning for implicitly converting either from signed int to unsigned int or vice versa. Listing 10.39 provides an example.</p> |
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<div class="listing"> |
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<h4>Listing 10.39 Example of Implicit Conversions Between Signed int and unsigned int</h4> |
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<p>#pragma warn_implicitconv on // required to enable warnings<br /> |
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#pragma warn_impl_s2u_conv on // enable conversion warningsigned int si;<br /> |
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unsigned int ui; </p> |
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<p>int main()<br /> |
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{<br />
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ui = si; // WARNING<br /> |
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si = ui; // WARNING</p> |
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<p>#pragma warn_impl_s2u_conv off // disable conversion warning<br /> |
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ui = si; // OK<br /> |
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si = ui; // OK<br /> |
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}</p> |
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</div> |
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<p>This pragma corresponds to the Signed / Unsigned setting . To check this setting, use <span class="code"><span class="code">__option (warn_impl_s</span>2u_conv)</span>, described in <a href="../symbols/sym_settings.htm">Checking Settings</a>. The default setting is <span class="code">off</span>.</p> |
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<p class="note"><strong>NOTE</strong> The setting of this pragma is ignored unless <a href="p_warn_implicitconv.htm">warn_implicitconv</a> is on.</p> |
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<div id="footer">Copyright © 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div> |
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</body> |
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</html> |