<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 - Compilation failure of template with dllexport and anonymous namespace"
href="https://bugs.llvm.org/show_bug.cgi?id=31971">31971</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Compilation failure of template with dllexport and anonymous namespace
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.9
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows XP
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>eric@andante.org
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>This sample program:
template <class _Tp, class _Dp>
class __declspec(dllexport) foobar
{
typedef _Tp element_type;
typedef _Dp deleter_type;
public:
foobar();
~foobar();
};
class barfoo
{
public:
barfoo();
~barfoo();
};
namespace {
struct release
{
void operator()(barfoo* p) {}
};
}
int main(int argc, char * argv[])
{
foobar<barfoo,release> asdf;
}
fails to compile with the error:
l4.cpp:4:29: error: 'foobar<barfoo, (anonymous namespace)::release>' must have
external linkage when declared 'dllexport'
class __declspec(dllexport) foobar
^
l4.cpp:29:26: note: in instantiation of template class 'foobar<barfoo,
(anonymous namespace)::release>' requested here
foobar<barfoo,release> asdf;
^
1 error generated.
Removing the "namespace" surrounding "struct release" cures the issue and makes
it possible to compile the test program.</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>