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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - use RtlRestoreContext which is forbidden in winstore builds"
href="https://bugs.llvm.org/show_bug.cgi?id=45713">45713</a>
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<th>Summary</th>
<td>use RtlRestoreContext which is forbidden in winstore builds
</td>
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<th>Product</th>
<td>Runtime Libraries
</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>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>libunwind
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>robux4@ycbcr.xyz
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
<div>
<pre>The current template AbstractUnwindCursor on Windows seems to create a context
along the way and when jumpto() is called, RtlRestoreContext is called.
This call is not allowed in some UCRT/UWP context. Here are the list of allowed
API entries: <a href="https://docs.microsoft.com/en-us/uwp/win32-and-com/win32-apis">https://docs.microsoft.com/en-us/uwp/win32-and-com/win32-apis</a>
In particular the RTL support:
<a href="https://docs.microsoft.com/en-us/uwp/win32-and-com/win32-apis#apis-from-api-ms-win-core-rtlsupport-l1-2-0dll">https://docs.microsoft.com/en-us/uwp/win32-and-com/win32-apis#apis-from-api-ms-win-core-rtlsupport-l1-2-0dll</a>
Maybe RtlUnwind or RtlUnwindEx could be used instead. But it seems like the
code would need a big rework.
In the meantime, builds with _LIBUNWIND_SUPPORT_SEH_UNWIND (the default when
__SEH__ is enable, which is also the default on win64) cannot be published on
the Windows Store for some devices because this API is not allowed (mostly for
C++ based code).</pre>
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