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| <h4 class="subsection">6.54.5 Darwin Pragmas</h4> |
| |
| <p>The following pragmas are available for all architectures running the |
| Darwin operating system. These are useful for compatibility with other |
| Mac OS compilers. |
| |
| <dl> |
| <dt><code>mark </code><var>tokens</var><code>...</code><dd><a name="index-pragma_002c-mark-3130"></a>This pragma is accepted, but has no effect. |
| |
| <br><dt><code>options align=</code><var>alignment</var><dd><a name="index-pragma_002c-options-align-3131"></a>This pragma sets the alignment of fields in structures. The values of |
| <var>alignment</var> may be <code>mac68k</code>, to emulate m68k alignment, or |
| <code>power</code>, to emulate PowerPC alignment. Uses of this pragma nest |
| properly; to restore the previous setting, use <code>reset</code> for the |
| <var>alignment</var>. |
| |
| <br><dt><code>segment </code><var>tokens</var><code>...</code><dd><a name="index-pragma_002c-segment-3132"></a>This pragma is accepted, but has no effect. |
| |
| <br><dt><code>unused (</code><var>var</var><code> [, </code><var>var</var><code>]...)</code><dd><a name="index-pragma_002c-unused-3133"></a>This pragma declares variables to be possibly unused. GCC will not |
| produce warnings for the listed variables. The effect is similar to |
| that of the <code>unused</code> attribute, except that this pragma may appear |
| anywhere within the variables' scopes. |
| </dl> |
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