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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Poor diagnostic when a default argument uses a default initializer that has not been parsed yet"
href="http://llvm.org/bugs/show_bug.cgi?id=16550">16550</a>
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<th>Summary</th>
<td>Poor diagnostic when a default argument uses a default initializer that has not been parsed yet
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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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>
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<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++11
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>richard-llvm@metafoo.co.uk
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>struct A
{
struct B
{
int i = 0;
};
B b;
A(const B& _b = B())
: b(_b)
{}
};
test.cpp:11:21: error: defaulted default constructor of 'B' cannot be used by
non-static data member initializer which appears before end of class definition
A(const B& _b = B())
^
This diagnostic is not correct. We should really say something more like:
test.cpp:5:17: error: non-static data member initializer used within class
definition
int i = 0;
^
test.cpp:11:21: note: implicitly used by use of defaulted default constructor
for 'B' in default argument here
A(const B& _b = B())
^
(We should probably wait until we have wording for core issue 1607 before
proceeding here; it's not entirely clear exactly what the rules will be yet.)</pre>
</div>
</p>
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