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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Template argument deduction via alias template fails spuriously"
href="https://llvm.org/bugs/show_bug.cgi?id=25250">25250</a>
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<th>Summary</th>
<td>Template argument deduction via alias template fails spuriously
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++14
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>r.hl@gmx.net
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>template <typename... T>
using funptr = void(*)(T...);
template <typename... T>
void f(funptr<T...>) {}
template void f(void(*)());
-----------------------------------------------------
The declared function template is ignored: "[…] failed template argument
deduction void f(funptr<T...>) {}".
If we use deduction from a function call instead, the error message suggests
that, although T is correctly deduced(!), there is a substitution failure.
(The above is indeed well-formed though; see CWG 1430 and 1700)</pre>
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