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    <head>
      <base href="https://bugs.llvm.org/">
    </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 - [modules] identical declarations do not match"
   href="https://bugs.llvm.org/show_bug.cgi?id=35793">35793</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[modules] identical declarations do not match
          </td>
        </tr>

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

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

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Modules
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>gonzalobg88@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The error in a nutshell:


In module 'bar' imported from foo.hpp:6:
c++/v1/tuple:1015:25: error:
'std::__1::__find_detail::__find_exactly_one_checked::__matches' from module
'bar' is not
      present in definition of '__find_exactly_one_checked<_T1, _Args...>'
provided earlier
  static constexpr bool __matches[] = {is_same<_T1, _Args>::value...};
                        ^
c++/v1/tuple:1015:25: note: declaration of '__matches' does not match
  static constexpr bool __matches[] = {is_same<_T1, _Args>::value...};
                        ^

I am trying to come up with a MWE but compiling with  -E -frewrite-imports (or
-P -E -frewrite-imports -fno-rewrite-includes) generates a file that does not
contain the error. 

Any ideas on how to proceed?</pre>
        </div>
      </p>


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