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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 - Typedef return type + Fully Qualified name for a member function causes error in out-of-line definition"
href="https://llvm.org/bugs/show_bug.cgi?id=25182">bug 25182</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>
</tr>
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<td style="text-align:right;">CC</td>
<td>
</td>
<td>richard-llvm@metafoo.co.uk
</td>
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<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 - Typedef return type + Fully Qualified name for a member function causes error in out-of-line definition"
href="https://llvm.org/bugs/show_bug.cgi?id=25182#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Typedef return type + Fully Qualified name for a member function causes error in out-of-line definition"
href="https://llvm.org/bugs/show_bug.cgi?id=25182">bug 25182</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>Whenever an identifier is followed by a ::, the pair of tokens is parsed as a
nested-name-specifier, and the program is ill-formed if the name before the ::
does not name a namespace, class, or enumeration. See [basic.lookup.qual]p1 and
<a href="http://wg21.link/cwg1828">http://wg21.link/cwg1828</a>.
So, your example fails to parse because
test_t::S::f
... is not a valid name. (GCC has a bug / extension where it accepts such
invalid code.)</pre>
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