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<base href="http://llvm.org/bugs/" />
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - MS ABI: wrong vftables with RTTI + virtual inheritance/functions"
href="http://llvm.org/bugs/show_bug.cgi?id=21074">21074</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>MS ABI: wrong vftables with RTTI + virtual inheritance/functions
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<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>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>consider:
struct __declspec(dllexport) ClassName0 {};
struct __declspec(dllexport) ClassName1 {
virtual void f();
};
struct __declspec(dllexport) ClassName2 : virtual ClassName0 {
virtual void g();
ClassName2() {}
};
struct __declspec(dllexport) ClassName3 : virtual ClassName2,
virtual ClassName0,
virtual ClassName1 {
virtual void h();
};
struct __declspec(dllexport) ClassName4 : virtual ClassName2,
virtual ClassName0,
virtual ClassName3 {};
--- different.cpp_clang.obj.dump 2014-09-25 23:12:17.192451100 -0700
+++ different.cpp_vs.obj.dump 2014-09-25 23:12:17.238455700 -0700
@@ -5,12 +5,15 @@
const ClassName3::`vftable'{for `ClassName3'}[0]: const ClassName3::`RTTI
Complete Object Locator'{for `ClassName3'}
const ClassName3::`vftable'{for `ClassName3'}[4]: public: virtual void
__thiscall ClassName3::h(void)
const ClassName3::`vftable'{for `ClassName1'}[0]: const ClassName3::`RTTI
Complete Object Locator'{for `ClassName1'}
+const ClassName3::`vftable'{for `ClassName1'}[4]: public: virtual void
__thiscall ClassName1::f(void)
const ClassName3::`vftable'{for `ClassName2'}[0]: const ClassName3::`RTTI
Complete Object Locator'{for `ClassName2'}
const ClassName3::`vftable'{for `ClassName2'}[4]: public: virtual void
__thiscall ClassName2::g(void)
const ClassName4::`vftable'[0]: const ClassName4::`RTTI Complete Object
Locator'
const ClassName4::`vftable'[4]: public: virtual void __thiscall
ClassName2::g(void)
const ClassName4::`vftable'{for `ClassName1'}[0]: const ClassName4::`RTTI
Complete Object Locator'{for `ClassName1'}
+const ClassName4::`vftable'{for `ClassName1'}[4]: public: virtual void
__thiscall ClassName1::f(void)
const ClassName4::`vftable'{for `ClassName3'}[0]: const ClassName4::`RTTI
Complete Object Locator'{for `ClassName3'}
+const ClassName4::`vftable'{for `ClassName3'}[4]: public: virtual void
__thiscall ClassName3::h(void)
const ClassName2::`vbtable'[0]: -4
const ClassName2::`vbtable'[4]: 4
const ClassName3::`vbtable'{for `ClassName3'}[0]: -4</pre>
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