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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Difference in treating with __builtin declratations"
href="http://llvm.org/bugs/show_bug.cgi?id=16712">16712</a>
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<th>Summary</th>
<td>Difference in treating with __builtin declratations
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>-New Bugs
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>stpworld@narod.ru
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Example:
extern int abs(int __i);
#define abs(__i) __builtin_abs(__i)
int
abs(int x)
{
return (x < 0) ? -x : x;
}
Is compiled with gcc, while clang emits error:
abc.c:5:1: error: definition of builtin function '__builtin_abs'
abs(int x)
abc.c:2:18: note: expanded from macro 'abs'
#define abs(__i) __builtin_abs(__i)</pre>
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