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    <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 --- - clang --coverage -c causes assertion failures on empty files."
   href="https://llvm.org/bugs/show_bug.cgi?id=30697">30697</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang --coverage -c causes assertion failures on empty files.
          </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>-New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>eric@efcs.ca
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>llvm-bugs@lists.llvm.org
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Reproducer:

clang --coverage -c -xc /dev/null

The assertion which fires is:

<span class="quote">>All DICompileUnits must be listed in llvm.dbg.cu
>clang-4.0: /home/eric/full-llvm/llvm/lib/IR/Verifier.cpp:4437: virtual bool (anonymous namespace)::VerifierLegacyPass::doFinalization(llvm::Module &): Assertion `!V->hasBrokenDebugInfo() && "Module contains invalid debug info"' failed.</span ></pre>
        </div>
      </p>
      <hr>
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      <ul>
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