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<h3 id="c">C</h3>
<ul>
+ <li>There is now experimental support for some features from the
+ upcoming C1X revision of the ISO C standard. This support may be
+ selected with <code>-std=c1x</code>, or <code>-std=gnu1x</code>
+ for C1X with GNU extensions. Note that this support is
+ experimental and may change incompatibly in future releases for
+ consistency with changes to the C1X standard draft. The following
+ features are newly supported as described in the N1539 draft of
+ C1X; some other features were already supported with no compiler
+ changes being needed, or have some support but not in full accord
+ with N1539.
+ <ul>
+ <li>Static assertions (<code>_Static_assert</code> keyword)</li>
+ <li>Typedef redefinition</li>
+ <li>New macros in <code><float.h></code></li>
+ <li>Anonymous structures and unions</li>
+ </ul>
+ </li>
<li>The new <code>-fplan9-extensions</code> option directs the
compiler to support some extensions for anonymous struct fields
which are implemented by the Plan 9 compiler. A pointer to a