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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang fails with 'has internal linkage but is not defined'"
href="http://llvm.org/bugs/show_bug.cgi?id=17664">17664</a>
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<th>Summary</th>
<td>clang fails with 'has internal linkage but is not defined'
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<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>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ppadevski@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Cannot compile the following code:
// Adaptee.h
class Adaptee { };
// Adapter.h
class Adapter {
template<typename T>
class Method {
static void Get(const T *);
}
template<typename T>
static void Adapt(const T *v) {
Method<T>::Get(v);
}
};
// Adaptee.cpp
#include <Adaptee.h>
#include <Adapter.h>
template<>
void Adapter::Method<Adaptee>::Get(const Adaptee *) { }
// main.cpp
#include <Adaptee.h>
#include <Adapter.h>
int
main()
{
Adaptee a;
Adapter::Adapt(&a);
}
The error occurs when compiling main.cpp:
'Adapter::Adapt<Adaptee>::Get' has internal linkage but is not defined
[-Werror,-Wundefined-internal]
static void Get(const T *nv);
^
Adapter.h:10: note: used here
Method<T>::Get(v);
This used to work on previous clang releases and on any gcc and vc. Is there a
known workaround?</pre>
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