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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - clang thinks class is incomplete in exception specification"
href="http://llvm.org/bugs/show_bug.cgi?id=20414">20414</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>clang thinks class is incomplete in exception specification
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>Macintosh
</td>
</tr>
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<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</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>alexandermbock@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>struct B;
struct A {
B& operator->();
int foo;
};
struct B {
auto operator->() -> A*;
auto f() throw(decltype(A()->foo)) -> void;
};
My understanding is that per 9.2 [class.mem], B should be considered complete
inside of the exception specification, and this code should be valid. gcc (4.8)
and edg-based compilers allow this example without complaint; clang complains:
error: incomplete definition of type 'B'
auto f() throw(decltype(A()->foo)) -> void;
^~~
note: definition of 'B' is not complete until the closing '}'
struct B {
^
clang version 3.5.0 (trunk 213749)
Target: x86_64-apple-darwin14.0.0
Thread model: posix</pre>
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