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      <base href="https://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <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>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[DebugInfo] Missing debug info for abstract classes with constexpr constructors with -flimited-debug-info
          </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>rnk@google.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dblaikie@gmail.com, llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <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>
        </div>
      </p>
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