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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang cannot find base class overload when subclass is disabled with enable_if"
href="https://llvm.org/bugs/show_bug.cgi?id=27377">27377</a>
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<th>Summary</th>
<td>Clang cannot find base class overload when subclass is disabled with enable_if
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.7
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rhainin1@binghamton.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The call to s.f below should call Base::f, instead it errors with:
error: no matching member function for call to 'f'
s.f(1);
~~^
llvm/llvm/bin/../include/c++/v1/type_traits:244:78: note: candidate template
ignored:
disabled by 'enable_if' [with U = int]
template <bool _Bp, class _Tp = void> using enable_if_t = typename
enable_if<_Bp, _Tp>::type;
// example
struct Base {
template <typename U>
void f(U) { }
};
struct Sub : Base {
using Base::f;
template <typename U, typename =std::enable_if_t<!std::is_same<int, U>{}>>
void f(U) { }
};
int main() {
Sub s{};
s.f(1);
}</pre>
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