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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang accepts new dll attributes on explicit instantiation of already instantiated templates"
href="http://llvm.org/bugs/show_bug.cgi?id=20758">20758</a>
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<th>Summary</th>
<td>clang accepts new dll attributes on explicit instantiation of already instantiated templates
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
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<th>Reporter</th>
<td>hans@chromium.org
</td>
</tr>
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<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>Consider:
template <typename T> void f() {}
void foo() { f<int>(); }
template void __declspec(dllimport) f<int>();
or
template <typename T> struct S { void f() {} };
void bar(S<int> s) { s.f(); }
template struct __declspec(dllexport) S<int>;
Clang accepts the code, but the attribute doesn't have any effect since it's
applied too late.
I think this would be hard for us to handle, so we should warn and drop the
attribute.</pre>
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