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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang-cl does not consider __m128 to be a struct type"
href="https://llvm.org/bugs/show_bug.cgi?id=28250">28250</a>
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<th>Summary</th>
<td>clang-cl does not consider __m128 to be a struct type
</td>
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<th>Product</th>
<td>clang
</td>
</tr>
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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>Windows NT
</td>
</tr>
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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>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>resistor@mac.com
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>MSVC treats __m128 as a struct type, and depends on that in DirectXMath.h.
clang-cl doesn't, which breaks DirectX apps.
For example:
1>C:\Program Files (x86)\Windows
Kits\10\Include\10.0.10586.0\um/DirectXMath.h(372,29): error : overloaded
'operator/=' must have at least one parameter of class or enumeration type
1> XMVECTOR& XM_CALLCONV operator/= (XMVECTOR& V1, FXMVECTOR V2);
1>C:\Program Files (x86)\Windows
Kits\10\Include\10.0.10586.0\um/DirectXMathVector.inl(412,13): error : member
reference base type 'FXMVECTOR' (aka 'const __m128') is not a structure or
union
1> return V.m128_f32[i];</pre>
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