<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 --- - Mangler::getNameWithPrefix behavior differers string overload and GV overload"
   href="http://llvm.org/bugs/show_bug.cgi?id=20127">20127</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Mangler::getNameWithPrefix behavior differers string overload and GV overload
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>libraries
          </td>
        </tr>

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

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>MacOS X
          </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>Core LLVM classes
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>jsweval@arxan.com
          </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>When calling Mangler::getNameWithPrefix() with a GlobalVariable, the mangler
correctly notices a leading \1 "don't mangle me" sentinel, strips the sentinel,
and returns the unmangled symbol name.

When calling Mangler::getNameWithPrefix() with a Twine, the mangler does not
check for the \1 sentinel. This causes it to return a symbol like "_\1+[Class
method]" instead of "+[Class method]".

I believe that r200367 introduced the change in behavior.
<a href="http://reviews.llvm.org/rL200367">http://reviews.llvm.org/rL200367</a></pre>
        </div>
      </p>
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