<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - base class template methods are not included in derived object method name resolution"
href="https://bugs.llvm.org/show_bug.cgi?id=39581">39581</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>base class template methods are not included in derived object method name resolution
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>wl@gnu.org
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>The following MWEs both compile with g++ but not with clang. This seems to be
a bug.
type parameters
---------------
struct Base {
template <class T>
void tmpl_method () { }
};
struct Derived : public Base {
using Base::tmpl_method;
template <class T, class X>
void tmpl_method () { }
};
void foo () {
Derived bar;
bar.tmpl_method<int>();
}
(cf. <a href="https://godbolt.org/z/WpET78">https://godbolt.org/z/WpET78</a>)
-> <source>:15:6: error:
no matching member function for call to 'tmpl_method'
bar.tmpl_method<int>();
~~~~^~~~~~~~~~~~~~~~
<source>:10:7: note:
candidate template ignored:
couldn't infer template argument 'X'
void tmpl_method () { }
^
non-type parameters
-------------------
(cf. <a href="https://godbolt.org/z/PZIaDn">https://godbolt.org/z/PZIaDn</a>)
struct Base {
template <int I>
void tmpl_method () { }
};
struct Derived : public Base {
using Base::tmpl_method;
template <bool B>
void tmpl_method () { }
};
void foo () {
Derived bar;
bar.tmpl_method<5>();
}
-> <source>:15:6: error:
no matching member function for call to 'tmpl_method'
bar.tmpl_method<5>();
~~~~^~~~~~~~~~~~~~
<source>:10:7: note: candidate template ignored:
invalid explicitly-specified argument for
template parameter 'B'
void tmpl_method () { }
^
The issue was discussed in a thread on the cfe-users mailing list starting with
<a href="http://lists.llvm.org/pipermail/cfe-users/2018-November/001417.html">http://lists.llvm.org/pipermail/cfe-users/2018-November/001417.html</a></pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>