<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 - dllexported subclass causes implicit instantiation of base class static fields"
href="https://bugs.llvm.org/show_bug.cgi?id=51661">51661</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>dllexported subclass causes implicit instantiation of base class static fields
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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++11
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>skyostil@chromium.org
</td>
</tr>
<tr>
<th>CC</th>
<td>blitzrakete@gmail.com, dgregor@apple.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>The following code fails to build with clang-cl 14.0.0 (ee659383):
// Define a template with a static field.
template <typename T>
struct Base {
static int member;
};
// Define a dllexported subclass using the template.
struct __declspec(dllexport) Sub: public Base<int> {};
// Declare storage for the static member:
template <>
int __declspec(dllexport) Base<int>::member;
This fails with:
test.cc(12,16): error: explicit specialization of 'member' after
instantiation
int Base<int>::member;
test.cc(4,16): note: implicit instantiation first required here
static int member;
The same code builds with CL 19.29.30037, or if I remove the dllexport
declaration from `Sub`, or if I move the static member declaration above the
definition of `Sub`.</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>