<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 --- - [fuzz] Assertion `!isNull() && "Cannot retrieve a NULL type pointer"' failed."
   href="http://llvm.org/bugs/show_bug.cgi?id=21821">21821</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[fuzz] Assertion `!isNull() && "Cannot retrieve a NULL type pointer"' 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>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>sami.liedes@iki.fi
          </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>Created <span class=""><a href="attachment.cgi?id=13463" name="attach_13463" title="test case">attachment 13463</a> <a href="attachment.cgi?id=13463&action=edit" title="test case">[details]</a></span>
test case

Fuzzing discovered that the attached test case, when given as input to

  clang -fno-crash-diagnostics -std=c++11 -xc++ -c -emit-llvm

causes this assertion failure:

retrieve-null-type-ptr.cpp:1:1: error: unknown type name 'typede'; did you mean
'typedef'?
typede^ _Atomic(i
^~~~~~
typedef                                                                         
retrieve-null-type-ptr.cpp:1:18: error: expected ')'
typede^ _Atomic(i
                 ^
retrieve-null-type-ptr.cpp:1:16: note: to match this '('
typede^ _Atomic(i
               ^
retrieve-null-type-ptr.cpp:1:17: error: C++ requires a type specifier for all
declarations
typede^ _Atomic(i
~~~~~~          ^
retrieve-null-type-ptr.cpp:1:7: error: blocks support disabled - compile with
-fblocks or pick a deployment target that supports them
typede^ _Atomic(i
      ^
retrieve-null-type-ptr.cpp:1:17: error: block pointer to non-function type is
invalid
typede^ _Atomic(i
                ^
clang-3.6: tools/clang/include/clang/AST/Type.h:562: const
clang::ExtQualsTypeCommonBase *clang::QualType::getCommonPtr() const: Assertion
`!isNull() && "Cannot retrieve a NULL type pointer"' failed.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are on the CC list for the bug.</li>
      </ul>
    </body>
</html>