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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - typedef causes instantiation of a class which fails due to an incomplete type"
href="http://llvm.org/bugs/show_bug.cgi?id=16174">16174</a>
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<th>Summary</th>
<td>typedef causes instantiation of a class which fails due to an incomplete type
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.2
</td>
</tr>
<tr>
<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</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>
</tr>
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<th>Component</th>
<td>-New Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>tommitissari@hotmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>template <typename T>
struct A
{
struct B
{
struct C
{
T data; // #[0]
};
C data; // #[1]
};
typedef typename B::C X; // #[2]
};
struct I // #[4]
: A<I> // #[3]
{
};
int main()
{
return 0;
}
----
[0]: Error: Field has incomplete type 'I'
[1]: In instantiation of member class 'A<I>::B::C' requested here
[2]: In instantiation of member class 'A<I>::B' requested here
[3]: In instantiation of template class 'A<I>' requested here
[4]: Definition of 'I' is not complete until the closing "}"
If you comment out the line #[1], the code compiles.</pre>
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