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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 --- - MS ABI: Bad this adjustment for virtual methods in a diamond virtual inheritance hierarchy"
href="http://llvm.org/bugs/show_bug.cgi?id=18967">18967</a>
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<th>Summary</th>
<td>MS ABI: Bad this adjustment for virtual methods in a diamond virtual inheritance hierarchy
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</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>rnk@google.com
</td>
</tr>
<tr>
<th>Reporter</th>
<td>rnk@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>hans@hanshq.net, llvmbugs@cs.uiuc.edu, timurrrr@google.com
</td>
</tr>
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<th>Blocks</th>
<td>12477, 18887
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Semi-reduced test case:
$ cat t.cpp
struct A {
virtual int foo() { return a; }
int a;
};
struct B : virtual A {
B() : b(1) {}
virtual int bar() { return b; }
int b;
};
struct C : virtual A {
C() : c(2) {}
virtual int foo() { return c; }
int c;
};
struct D : B, C {
D() : d(3) {}
virtual int bar() { return d; }
int d;
};
int main() {
D d;
return d.foo();
}
$ clang-cl -GR- t.cpp && ./t.exe ; echo $?
3
This should return 2, not 3. It's accessing 'd' instead of 'c'.</pre>
</div>
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