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<body><span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span> changed
<a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - clang-cl unqualified friend declaration"
href="https://bugs.llvm.org/show_bug.cgi?id=44531">bug 44531</a>
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<table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
</td>
</tr>
<tr>
<td style="text-align:right;">CC</td>
<td>
</td>
<td>rnk@google.com
</td>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - clang-cl unqualified friend declaration"
href="https://bugs.llvm.org/show_bug.cgi?id=44531#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - clang-cl unqualified friend declaration"
href="https://bugs.llvm.org/show_bug.cgi?id=44531">bug 44531</a>
from <span class="vcard"><a class="email" href="mailto:rnk@google.com" title="Reid Kleckner <rnk@google.com>"> <span class="fn">Reid Kleckner</span></a>
</span></b>
<pre>The intention of the warning is to indicate that, on Linux, you are not
friending the global class S, but you are declaring a class N::S, which will
friend N::SS. MSVC will instead friend class ::S, and clang-cl does this.
Consider:
<a href="https://godbolt.org/z/yZbeVt">https://godbolt.org/z/yZbeVt</a>
class S;
namespace N
{
class SS
{
friend class S;
static int gv;
};
}
class S {
int usePriv() { return N::SS::gv; }
};
MSVC and clang-cl accept, regular clang on Linux rejects. Clang on Windows is
trying to warn you about that non-standard behavior. Seems to be working as
intended.</pre>
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