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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Conflicting types for '__builtin_isnan' on Android/ARM"
href="http://llvm.org/bugs/show_bug.cgi?id=20958">20958</a>
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<th>Summary</th>
<td>Conflicting types for '__builtin_isnan' on Android/ARM
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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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>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>eugeni.stepanov@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>On 32-bit ARM, Android NDK declares __builtin_isnan as
__attribute__((pcs("aapcs"))) - this matches Android libm, which always
implements __builtin_isnan with softfp calling convention.
Clang does not accept such definition.
.../sysroot/usr/include/math.h:527:5: error: conflicting types for
'__builtin_isnan'
int __builtin_isnan(double) __NDK_FPABI_MATH__ __pure2;
^
.../sysroot/usr/include/math.h:527:5: note: '__builtin_isnan' is a builtin with
type 'int ()'</pre>
</div>
</p>
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