<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 --- - [ms-abi] Clang doesn't treat declspec on record declarations correctly"
   href="http://llvm.org/bugs/show_bug.cgi?id=18126">18126</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[ms-abi] Clang doesn't treat declspec on record declarations correctly
          </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>Frontend
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>whunt@google.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>cl appears to ignore __declspec(align) on record declarations and clang-cl does
not.

cl allows conflicting __declspec(dllimport/export) attributes on the
declaration and definition with the definition attribute taking precedence.

clang warns on __declspec(dllexport) either place:
warning: 'dllexport' attribute only applies to variables and functions
[-Wignored-attributes]

In my test:
struct S;
struct __declspec(dllimport) S {
    static void f() {}
} a;
int main() {
    S a;
    a.f();
    printf("align : %d %d\n", __alignof(S), __alignof(a));
}
dllimport seems to have no impact whatsoever in clang.  In cl, dllimport
suppresses export of f.</pre>
        </div>
      </p>
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