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    <body><span class="vcard"><a class="email" href="mailto:mclow.lists@gmail.com" title="Marshall Clow (home) <mclow.lists@gmail.com>"> <span class="fn">Marshall Clow (home)</span></a>
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              <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Abort trap: 6 libc++abi.dylib: terminating with uncaught exception of type std::bad_alloc: std::bad_alloc"
   href="https://llvm.org/bugs/show_bug.cgi?id=28453">bug 28453</a>
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            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">Status</td>
           <td>NEW
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           <td>RESOLVED
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           <td>INVALID
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            <b><a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Abort trap: 6 libc++abi.dylib: terminating with uncaught exception of type std::bad_alloc: std::bad_alloc"
   href="https://llvm.org/bugs/show_bug.cgi?id=28453#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_RESOLVED  bz_closed"
   title="RESOLVED INVALID - Abort trap: 6 libc++abi.dylib: terminating with uncaught exception of type std::bad_alloc: std::bad_alloc"
   href="https://llvm.org/bugs/show_bug.cgi?id=28453">bug 28453</a>
              from <span class="vcard"><a class="email" href="mailto:mclow.lists@gmail.com" title="Marshall Clow (home) <mclow.lists@gmail.com>"> <span class="fn">Marshall Clow (home)</span></a>
</span></b>
        <pre>Your comparison function (compareStr) does not impose a strict weak ordering on
the strings. Hence the behavior of sort is undefined.

A reasonable discussion can be found here:
<a href="https://www.securecoding.cert.org/confluence/display/cplusplus/CTR57-CPP.+Provide+a+valid+ordering+predicate">https://www.securecoding.cert.org/confluence/display/cplusplus/CTR57-CPP.+Provide+a+valid+ordering+predicate</a>

but your fails two simple tests.
   comp(a, a) --> false
   comp(a, b) != comp(b, a)</pre>
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