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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [DebugInfo] Missing debug info for abstract classes with constexpr constructors with -flimited-debug-info"
href="https://llvm.org/bugs/show_bug.cgi?id=28248">28248</a>
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<th>Summary</th>
<td>[DebugInfo] Missing debug info for abstract classes with constexpr constructors with -flimited-debug-info
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>LLVM Codegen
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>rnk@google.com
</td>
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<th>CC</th>
<td>dblaikie@gmail.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
</td>
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<p>
<div>
<pre>While working on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [DebugInfo] Extend vtable debug info metadata to handle MS ABI"
href="show_bug.cgi?id=28150">https://llvm.org/bugs/show_bug.cgi?id=28150</a>, I noticed that
this C++ doesn't generate any debug info describing class 'A' in C++11:
struct A {
virtual void f() = 0;
};
struct B : A {
virtual void f() {}
};
B b;
On Windows, Clang defaults to C++11, so we don't get this debug info. I think
the C++11 aspect has to do with A's default constructor being constexpr. Adding
a user-defined ctor to A ensures that the debug info is emitted.</pre>
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