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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 --- - Mangling of nullptr_t values do not follow ABI"
   href="http://llvm.org/bugs/show_bug.cgi?id=17141">17141</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Mangling of nullptr_t values do not follow ABI
          </td>
        </tr>

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

        <tr>
          <th>Version</th>
          <td>3.2
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>other
          </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>C++11
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>hstong@ca.ibm.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr></table>
      <p>
        <div>
        <pre>The C++ ABI document (available at
<a href="http://mentorembedded.github.io/cxx-abi/abi.html#mangle.expr-primary">http://mentorembedded.github.io/cxx-abi/abi.html#mangle.expr-primary</a>) specifies
a mangling for the nullptr literal.
The mangling that Clang produces is not consistent with the form specified by
the ABI; namely, "LDn0E" is generated by Clang instead of "LDnE".

ICC mangles using the ABI-specified form: "LDnE".

Note that nullptr_t is not an integer type. It is contrary to the specification
to apply the production for integer literals to a literal of type nullptr_t.

### SMALL SOURCE (nullptrValueMangle.cc):
typedef decltype(nullptr) NullPtrType;
template <NullPtrType> void foo();
template <> void foo<nullptr>() { }

### ACTUAL MANGLED NAME:
<span class="quote">> clang++ -std='c++11' -c -o nullptrValueMangle.o nullptrValueMangle.cc && nm nullptrValueMangle.o</span >
00000000 b .bss
00000000 d .data
00000000 t .text
00000000 T __Z3fooILDn0EEvv

### EXPECTED MANGLED NAME:
__Z3fooILDnEEvv

### clang++ -v:
<span class="quote">> clang++ -v</span >
clang version 3.2 (trunk 158227)
Target: i386-pc-cygwin
Thread model: posix</pre>
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