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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 - Perfect forwarding hides proper overload"
href="http://llvm.org/bugs/show_bug.cgi?id=20175">bug 20175</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
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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 - Perfect forwarding hides proper overload"
href="http://llvm.org/bugs/show_bug.cgi?id=20175#c1">Comment # 1</a>
on <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Perfect forwarding hides proper overload"
href="http://llvm.org/bugs/show_bug.cgi?id=20175">bug 20175</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>The candidates for this call:
d.out(s, l);
are:
1) int derived::out(int s, const char &w)
2) auto decorator<Aut>::out(Args&&... args) -> decltype(a_.out(args...))
[Aut = base<std::pair<char, char>>,
Args = {int&, char&}]
Both overload candidates are viable. The second is preferred, because it is a
better match for the second parameter (a char lvalue prefers a 'char&'
parameter over a 'const char&' parameter) and is no worse on the first
parameter (an int lvalue is equally happy with an 'int' parameter or an 'int&'
parameter).
So #2 is called.
If you think something else should have happened here, please reopen this bug
and explain what you think should have happened and why.</pre>
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