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    <head>
      <base href="https://llvm.org/bugs/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - Assertion `Entry != DelayedTypos.end() && "Failed to get the state for a TypoExpr!"' failed."
   href="https://llvm.org/bugs/show_bug.cgi?id=27231">27231</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Assertion `Entry != DelayedTypos.end() && "Failed to get the state for a TypoExpr!"' failed.
          </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>Linux
          </td>
        </tr>

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

        <tr>
          <th>Keywords</th>
          <td>crash-on-invalid
          </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>rtrieu@google.com
          </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>$ cat test.c
void test(int x, int y) {
  test(unknown, unknown | unknown);
}

$ clang -cc1 test.c
test.c:2:17: error: use of undeclared identifier 'unknown'
  test(unknown, unknown | unknown);
                ^
test.c:2:27: error: use of undeclared identifier 'unknown'
  test(unknown, unknown | unknown);
                          ^
clang: ../tools/clang/lib/Sema/SemaLookup.cpp:5032: const Sema::TypoExprState
&clang::Sema::getTypoExprState(clang::TypoExpr *) const: Assertion `Entry !=
DelayedTypos.end() && "Failed to get the state for a TypoExpr!"' failed.</pre>
        </div>
      </p>
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