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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Support -std=c++20/gnu++20"
href="https://bugs.llvm.org/show_bug.cgi?id=44939">44939</a>
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<th>Summary</th>
<td>Support -std=c++20/gnu++20
</td>
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<th>Product</th>
<td>clang
</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>All
</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>C++2a
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>romain.geissler@amadeus.com
</td>
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<pre>Hi,
C++20 was marked as (technically) done at the Prague meeting last week, so now
there is no need to call this standard C++2a, it is officially C++20. Thus
clang should accept -std=c++20/gnu++20 which doesn't seem to be the case with
the current trunk (at least on Compiler Explorer). gcc has added this very
recently with this commit:
<a href="https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=fb26050409473f5be54465beca114b7e48de43aa">https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=fb26050409473f5be54465beca114b7e48de43aa</a>
I also think this is a possible candidate for a backport into the soon to be
released Clang 10.
Cheers,
Romain</pre>
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