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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Explicit specialization after instantiation error"
href="https://bugs.llvm.org/show_bug.cgi?id=38109">38109</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Explicit specialization after instantiation error
</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++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>steveire@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>Clang does not accept code which CL.exe accepts. The example works if I remove
the dllexport.
C:\dev\src\playground\cpp>C:\dev\src\llvm\build\releaseprefix\msbuild-bin\cl.exe
explicit_instantiation.cpp
explicit_instantiation.cpp
explicit_instantiation.cpp(12,21): error: explicit specialization of 's_foo'
after instantiation
template<> B* A<B>::s_foo = nullptr;
^
explicit_instantiation.cpp(5,15): note: implicit instantiation first required
here
static T* s_foo;
^
1 error generated.
C:\dev\src\playground\cpp>cl.exe explicit_instantiation.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.14.26430 for x64
Copyright (C) Microsoft Corporation. All rights reserved.
explicit_instantiation.cpp
Microsoft (R) Incremental Linker Version 14.14.26430.0
Copyright (C) Microsoft Corporation. All rights reserved.
/out:explicit_instantiation.exe
explicit_instantiation.obj
Creating library explicit_instantiation.lib and object
explicit_instantiation.exp
C:\dev\src\playground\cpp>type explicit_instantiation.cpp
template <typename T>
class A
{
static T* s_foo;
};
class __declspec(dllexport) B : public A<B>
{
};
template<> B* A<B>::s_foo = nullptr;
int main()
{
return 0;
}</pre>
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