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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - MS ABI: Assertion in VFTableBuilder when compiling hierarchy with virtual inheritance"
href="http://llvm.org/bugs/show_bug.cgi?id=21062">21062</a>
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<th>Summary</th>
<td>MS ABI: Assertion in VFTableBuilder when compiling hierarchy with virtual inheritance
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Windows NT
</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>
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<th>Component</th>
<td>LLVM Codegen
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>david.majnemer@gmail.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>consider:
struct __declspec(dllexport) A {
virtual void f();
};
struct __declspec(dllexport) C : virtual A {
virtual void g();
};
struct __declspec(dllexport) D : virtual A {};
struct __declspec(dllexport) E : virtual D, virtual A, virtual C {};
compile with:
~/llvm/Release+Asserts/bin/clang++ -cc1 -x c++ different.cpp -triple
i686-pc-win32 -fms-compatibility -fno-rtti -emit-obj -w -o -
clang crashes with:
Assertion failed: Components.size() && "vftable can't be empty", file
D:\src\llvm\src\tools\clang\lib\AST\VTableBuilder.cpp, line 2549
MSVC does not reject their hierarchy</pre>
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