<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<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 INVALID - Clang prohibits base class friend member access"
href="https://bugs.llvm.org/show_bug.cgi?id=46036">bug 46036</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;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
</tr></table>
<p>
<div>
<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Clang prohibits base class friend member access"
href="https://bugs.llvm.org/show_bug.cgi?id=46036#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Clang prohibits base class friend member access"
href="https://bugs.llvm.org/show_bug.cgi?id=46036">bug 46036</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>Clang is correct; the friend declaration only lets you access protected members
of base classes when they're named as members of the befriending class. Within
ignored_friend_declaration_t it is valid to refer to test_child::value, but not
to test_base::value.
The C++ rules used to allow this kind of access, but were changed because it's
not implementable in general. See
<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1873">http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1873</a>. I would
imagine the other implementations have not yet implemented the revised rule.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>