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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 --- - pp_nonportable_path on absolute paths: broken delimiters"
   href="https://llvm.org/bugs/show_bug.cgi?id=31836">31836</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>pp_nonportable_path on absolute paths: broken delimiters
          </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>All
          </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>Axel.Naumann@cern.ch
          </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>Created <span class=""><a href="attachment.cgi?id=17922" name="attach_17922" title="Proposed patch - but without test">attachment 17922</a> <a href="attachment.cgi?id=17922&action=edit" title="Proposed patch - but without test">[details]</a></span>
Proposed patch - but without test

On macOS I get

$ echo '#include "/Users/Axel/Tmp/T.h"' | clang -cc1 -x c++ -E -
# 1 "<stdin>"
# 1 "<built-in>" 1
# 1 "<built-in>" 3
# 320 "<built-in>" 3
# 1 "<command line>" 1
# 1 "<built-in>" 2
# 1 "<stdin>" 2
<stdin>:1:10: warning: non-portable path to file '"/UUsersAaxelTtmpTT.h"';
specified path differs in case from file name on disk
#include "/Users/Axel/Tmp/T.h"
         ^~~~~~~~~~~~~~~~~~~~~
         "/UUsersAaxelTtmpTT.h"
# 1 "/Users/Axel/Tmp/T.h" 1
# 2 "<stdin>" 2

1 warning generated.

due to an off-by-one error for absolute paths. Attached patch seems to fixe
that.

I'd commit myself but I don't know how to write a test for that :-( Sorry!

Axel.</pre>
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