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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Regression: ATL headers fail to compile: recursive template instantiation"
href="https://bugs.llvm.org/show_bug.cgi?id=40565">40565</a>
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<th>Summary</th>
<td>Regression: ATL headers fail to compile: recursive template instantiation
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>8.0
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>enhancement
</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
</td>
</tr>
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<th>Reporter</th>
<td>jvapen@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>The windows headers to deal with the COM libraries fail to compile in
8.0.0-RC1, while they compiled with 7.0.0
(Side note: Would it be possible to add these to some kind of testsuite for
verification, as these same headers already caused issues in the past?)
t.cpp
-----
#include <atlbase.h>
#include <atlwin.h>
#include <atldef.h>
#include <atliface.h>
#include <comdef.h>
#include <atlhost.h>
#include <statreg.h>
run.bat
-------
set OPTIONS=/nologo /c /GR /EHsc /std:c++17 -fms-compatibility-version=19.11
t.cpp
:: FAILURE
C:\LLVM_8_0_0_RC1\bin\clang-cl.exe %OPTIONS%
:: SUCCESS
C:\LLVM_7_0_0\bin\clang-cl.exe %OPTIONS%</pre>
</div>
</p>
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