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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 INVALID - CLANG including struct names when looking up namespace name candidates"
href="https://bugs.llvm.org/show_bug.cgi?id=45216">bug 45216</a>
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<tr>
<th>What</th>
<th>Removed</th>
<th>Added</th>
</tr>
<tr>
<td style="text-align:right;">Resolution</td>
<td>---
</td>
<td>INVALID
</td>
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<td style="text-align:right;">Status</td>
<td>NEW
</td>
<td>RESOLVED
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<b><a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - CLANG including struct names when looking up namespace name candidates"
href="https://bugs.llvm.org/show_bug.cgi?id=45216#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - CLANG including struct names when looking up namespace name candidates"
href="https://bugs.llvm.org/show_bug.cgi?id=45216">bug 45216</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>This is a GCC bug. The lookup for the name on the left of :: "considers only
namespaces, types, and templates whose specializations are types" according to
the C++ standard, so following the normal unqualified lookup rules it should
find both the namespace ::N1 and the struct N2::N1.
Modified example showing why lookup to the left of :: should consider types:
namespace N1 {
const char* f();
}
namespace N2 {
struct X {
static const char* f();
};
using N1 = X;
}
using namespace N2;
using N1::f; // Clang: ambiguous, GCC: N1::f (OK)
struct Q : N2::N1 {
using N1::f; // Clang: ambiguous, GCC: N1::f (error)
};</pre>
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