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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Explicit specialization of class template member function doesn't work with -cxx-abi microsoft"
href="http://llvm.org/bugs/show_bug.cgi?id=18141">18141</a>
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<th>Summary</th>
<td>Explicit specialization of class template member function doesn't work with -cxx-abi microsoft
</td>
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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>
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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>-New Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>hans@chromium.org
</td>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, rafael.espindola@gmail.com, rnk@google.com
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>The following example, derived from
test/CXX/temp/temp.spec/temp.expl.spec/p2.cpp, fails with clang -cc1 -target
i686-pc-win32 -cxx-abi microsoft
$ cat a.cc
template <typename T>
struct S {
void f(T t) {
t = 42; // This doesn't work when T is void*.
}
};
// So we provide a specialization for T = void*.
template<> void S<void*>::f(void*);
void g(S<void*> s, void* p) {
s.f(p); // Boom.. on -target i686-pc-win32 -cxx-abi microsoft
}
$ clang -cc1 -triple i686-pc-win32 -cxx-abi microsoft a.cc
a.cc:4:7: error: assigning to 'void *' from incompatible type 'int'
t = 42; // This doesn't work when T is void*.
^ ~~
a.cc:12:5: note: in instantiation of member function 'S<void *>::f' requested
here
s.f(p); // Boom.. on -target i686-pc-win32 -cxx-abi microsoft
^
1 error generated.
For some reason, the call to f doesn't get bound to the explicit
specialization.
+rafael because I suspect this has something to do with the method having
thiscall calling convention, and I know you've been doing some work in that
area.
The code works if I add __attribute__((thiscall)) to the specialization. It
also works if I make it a definition instead of just a declaration.</pre>
</div>
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