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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 DUPLICATE - static constepxr members of arguments passed by reference are not recognised as constexpr"
href="https://bugs.llvm.org/show_bug.cgi?id=46499">bug 46499</a>
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<th>What</th>
<th>Removed</th>
<th>Added</th>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
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<td style="text-align:right;">Resolution</td>
<td>---
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<td>DUPLICATE
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - static constepxr members of arguments passed by reference are not recognised as constexpr"
href="https://bugs.llvm.org/show_bug.cgi?id=46499#c2">Comment # 2</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED DUPLICATE - static constepxr members of arguments passed by reference are not recognised as constexpr"
href="https://bugs.llvm.org/show_bug.cgi?id=46499">bug 46499</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>I believe clang is following the language rules here. You can't mention a
reference from a constant expression unless we know the object the reference
binds to, because the evaluation semantics of an lvalue include determining the
object it denotes.
As far as I can tell, other compilers sometimes accept this because they do
some kind of early AST folding that loses the distinction between a direct
access to a static data member and a class member access.
*** This bug has been marked as a duplicate of <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Clang looses constexpr."
href="show_bug.cgi?id=41093">bug 41093</a> ***</pre>
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