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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Clang-cl link error virtual dtor of virtual base"
href="https://bugs.llvm.org/show_bug.cgi?id=38524">38524</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang-cl link error virtual dtor of virtual base
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>7.0
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>jvapen@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
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<pre>Created <span class=""><a href="attachment.cgi?id=20674" name="attach_20674" title="Copy of reproduction">attachment 20674</a> <a href="attachment.cgi?id=20674&action=edit" title="Copy of reproduction">[details]</a></span>
Copy of reproduction
This bug looks a lot like a previous one I logged,
however, this contains the fixes of the bug it was merged with.
I've encountered the issue with both LLVM 6.0 as 7.0-RC1
All files below can be found in copy in the attachment
Error:
------
t.clang.obj : error LNK2019: unresolved external symbol "public: virtual
__cdecl C::~C(void)" (??1C@@UEAA@XZ) referenced in function "public: virtual
__cdecl G::~G(void)" (??1G@@UEAA@XZ)
Run.cmd
-------
cl.exe /nologo /c /GR /EHsc /std:c++17 /O2 t.cpp -w
cl.exe /nologo /c /GR /EHsc /std:c++17 /O2 u.cpp -w
move t.obj t.msvc.obj
move u.obj u.msvc.obj
link t.msvc.obj u.msvc.obj
e:\development\jva\other\software\llvm_7_0_0_r336178\bin\clang-cl.exe
-fms-compatibility-version=19.11 /nologo /c /GR /EHsc /std:c++17 /O2
t.cpp -w
e:\development\jva\other\software\llvm_7_0_0_r336178\bin\clang-cl.exe
-fms-compatibility-version=19.11 /nologo /c /GR /EHsc /std:c++17 /O2
u.cpp -w
move t.obj t.clang.obj
move u.obj u.clang.obj
link t.clang.obj u.clang.obj
t.h
---
class A {
public:
virtual ~A() = default;
};
class B {
public:
virtual ~B() = default;
};
class C : public B {
public:
C() = default;
};
class D : public virtual C, public A {
public:
virtual ~D() override = default;
};
class __declspec(dllexport) E {
public:
explicit E();
virtual ~E();
E(const E &other) = delete;
E &operator=(const E &rhs) = delete;
E(E &&other);
E &operator=(E &&rhs) = delete;
};
class __declspec(dllexport) F : public D, protected E {
public:
explicit F();
virtual ~F();
};
class __declspec(dllexport) G final {
public:
explicit G();
virtual ~G();
F f;
};
t.cpp
-----
#include "t.h"
G::G() = default;
G::~G() = default;
int main(int, char **) {}
u.cpp
-----
#include "t.h"
E::E() = default;
E::~E() = default;
E::E(E &&) = default;
F::F() = default;
F::~F() = default;</pre>
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