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    <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 --- - MS ABI: LLVM type derived from struct has wrong size"
   href="http://llvm.org/bugs/show_bug.cgi?id=18692">18692</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>MS ABI: LLVM type derived from struct has wrong size
          </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>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 A {
  char AField[9];
};
struct B {
  long long BField1;
};
#pragma pack(push, 4)
struct __declspec(align(16)) C : A, B {};
#pragma pack(pop)
int main() { C(); }

compile with:
~/llvm/build/bin/clang++ -cc1 -triple i386-pc-win32 foo.cpp -fno-rtti
-emit-llvm-only

the following assertion fires in CGRecordLayoutBuilder.cpp:1077 :
TypeSizeInBits == getDataLayout().getTypeAllocSizeInBits(Ty) && "Type size
mismatch!"</pre>
        </div>
      </p>
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