<html>
    <head>
      <base href="http://llvm.org/bugs/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - [-cxx-abi microsoft] Mangle TemplateArgument::Declaration correctly for pointer to member function"
   href="http://llvm.org/bugs/show_bug.cgi?id=17034">17034</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[-cxx-abi microsoft] Mangle TemplateArgument::Declaration correctly for pointer to member function
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>clang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </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 record {
  virtual int first();
  virtual int second();
};

struct omg : public record {
  virtual int third();
  virtual int fourth();
};

struct vrecord : virtual public record {
  virtual int third();
  virtual int fourth();
};

struct base1 {
  virtual int field1();
};
struct base2 {
  virtual int field2();
};

struct v2record : public base1, virtual public vrecord, public base2 {
  virtual int fun();
  virtual int fifth();
  virtual int sixth();
};

template <typename record, int (record::*thing)()>
void memptr() {}

template void memptr<omg, &omg::third>();
template void memptr<omg, &omg::fourth>();

template void memptr<v2record, &v2record::fifth>();
template void memptr<v2record, &v2record::sixth>();

the last instantiation is supposed to mangle to:
??$memptr@Uv2record@@$I??_9omg@@$BBI@AAA@A@@@YAXXZ

note how insane and baffling this mangling seems to be, it mentions the type
"omg" even though v2record has no relationship with it other than sharing a
base class.

further insanity results when instantiations #1 and #2 are not included, the
mangling changes!

it becomes:
??$memptr@Uv2record@@$I??_91@$BBI@AAA@A@@@YAXXZ</pre>
        </div>
      </p>
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