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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 --- - [-cxx-abi microsoft] fuzzer believes clang inserted an extra vbptr"
href="http://llvm.org/bugs/show_bug.cgi?id=18039">18039</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>[-cxx-abi microsoft] fuzzer believes clang inserted an extra vbptr
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</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>LLVM Codegen
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>david.majnemer@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=11597" name="attach_11597" title="test case">attachment 11597</a> <a href="attachment.cgi?id=11597&action=edit" title="test case">[details]</a></span>
test case
msvc prints out the following with the attached test case:
ClassName0FieldName0 : 0
ClassName0FieldName1 : 8
sizeof(ClassName0): 16
__alignof(ClassName0): 8
ClassName0FieldName0 : 8
ClassName0FieldName1 : 16
ClassName1FieldName0 : 4
ClassName1FieldName1 : 6
vbptr(ClassName1): 0
sizeof(ClassName1): 24
__alignof(ClassName1): 8
ClassName0FieldName0 : 24
ClassName0FieldName1 : 32
ClassName1FieldName0 : 44
ClassName1FieldName1 : 46
ClassName2FieldName0 : 8
ClassName2FieldName1 : 9
ClassName2FieldName2 : 16
vbptr(ClassName2): 0
sizeof(ClassName2): 48
__alignof(ClassName2): 8
ClassName0FieldName0 : 0
ClassName0FieldName1 : 8
ClassName3FieldName0 : 16
ClassName3FieldName1 : 20
ClassName3FieldName2 : 24
sizeof(ClassName3): 32
__alignof(ClassName3): 8
clang prints:
ClassName0FieldName0 : 0
ClassName0FieldName1 : 8
sizeof(ClassName0): 16
__alignof(ClassName0): 8
ClassName0FieldName0 : 8
ClassName0FieldName1 : 16
ClassName1FieldName0 : 4
ClassName1FieldName1 : 6
vbptr(ClassName1): 0
sizeof(ClassName1): 24
__alignof(ClassName1): 8
ClassName0FieldName0 : 24
ClassName0FieldName1 : 32
ClassName1FieldName0 : 44
ClassName1FieldName1 : 46
ClassName2FieldName0 : 8
ClassName2FieldName1 : 9
ClassName2FieldName2 : 16
vbptr(ClassName2): 0
vbptr(ClassName2): 40
sizeof(ClassName2): 48
__alignof(ClassName2): 8
ClassName0FieldName0 : 0
ClassName0FieldName1 : 8
ClassName3FieldName0 : 16
ClassName3FieldName1 : 20
ClassName3FieldName2 : 24
sizeof(ClassName3): 32
__alignof(ClassName3): 8
This output shows that clang has an additional "vbptr(ClassName2): 40"</pre>
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