<html>
    <head>
      <base href="https://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 --- - [ms] Assertion failed: IA && "Expected MSInheritanceAttr on the CXXRecordDecl!""
   href="https://llvm.org/bugs/show_bug.cgi?id=27030">27030</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[ms]  Assertion failed: IA && "Expected MSInheritanceAttr on the CXXRecordDecl!"
          </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>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>C++
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>unassignedclangbugs@nondot.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>andrey.kuleshov@intel.com
          </td>
        </tr>

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

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>!- related bugs that are marked as resolved:

<a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [ms] "Expected MSInheritanceAttr on the CXXRecordDecl!" assert when passing address of base class member function through subclass access path"
   href="show_bug.cgi?id=23828">https://llvm.org/bugs/show_bug.cgi?id=23828</a>
<a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED FIXED - [ms] MicrosoftCXXABI.cpp: assertion failed: IA && "Expected MSInheritanceAttr on the CXXRecordDecl!""
   href="show_bug.cgi?id=24703">https://llvm.org/bugs/show_bug.cgi?id=24703</a> 

This assertion appears again -!

=========Environment===========
Os: Win
Language: C++
Version: trunk

=========Small Reproducer======
struct A{
   virtual void a(){};
};

template <typename T> struct B : public A{
   void b(int T::* n) {
       (int A::*) n;
   }
};

struct C : public B<C>{
   int n;
   void c() {
       b(&C::n);
   }
};

C obj;
int main(){
  obj.c();
  return 0;
}

==========Error============
Assertion failed: IA && "Expected MSInheritanceAttr on the CXXRecordDecl!",
file llvm/tools/clang/lib/AST/MicrosoftCXXABI.cpp, line 182

Andrey Kuleshov
======
Software Engineer
Intel Compiler Team</pre>
        </div>
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