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<body><span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - __cpp_threadsafe_static_init is not defined"
href="https://bugs.llvm.org/show_bug.cgi?id=47012">bug 47012</a>
<br>
<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>FIXED
</td>
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<tr>
<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr></table>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - __cpp_threadsafe_static_init is not defined"
href="https://bugs.llvm.org/show_bug.cgi?id=47012#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED FIXED - __cpp_threadsafe_static_init is not defined"
href="https://bugs.llvm.org/show_bug.cgi?id=47012">bug 47012</a>
from <span class="vcard"><a class="email" href="mailto:richard-llvm@metafoo.co.uk" title="Richard Smith <richard-llvm@metafoo.co.uk>"> <span class="fn">Richard Smith</span></a>
</span></b>
<pre>Apple confusingly has their own version numbering system for "Apple clang"
that's unrelated to upstream Clang versions. Per
<a href="https://en.wikipedia.org/wiki/Xcode#Xcode_7.0_-_11.x_(since_Free_On-Device_Development">https://en.wikipedia.org/wiki/Xcode#Xcode_7.0_-_11.x_(since_Free_On-Device_Development</a>)
your "Apple LLVM version 9.0.0 (clang-900.0.39.2)" corresponds to Clang 4
(actually, somewhere between Clang 3.9 and Clang 4). Support for this feature
test macro was added in Clang 7
(<a href="https://github.com/llvm/llvm-project/commit/20eb9baa6d530bf421360b3d8afb87a09c0753e3">https://github.com/llvm/llvm-project/commit/20eb9baa6d530bf421360b3d8afb87a09c0753e3</a>).
Marking this FIXED on the basis that we added support for this years ago. It
looks like the Xcode 11 tools should have a Clang that's new enough to provide
this feature test macro.</pre>
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