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    <head>
      <base href="https://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 --- - clang does not find header in same directory in cygwin"
   href="https://llvm.org/bugs/show_bug.cgi?id=26319">26319</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>clang does not find header in same directory in cygwin
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>new-bugs
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </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>new bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>krunt@yandex.ru
          </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=15721" name="attach_15721" title="attached headers and cpp">attachment 15721</a> <a href="attachment.cgi?id=15721&action=edit" title="attached headers and cpp">[details]</a></span>
attached headers and cpp

doing that:

<span class="quote">> clang++ -o 3 3.cc</span >
In file included from 3.cc:4:
./3\1.h:2:10: fatal error: '2/x.h' file not found
#include "2/x.h"
         ^
1 error generated.

this command 
<span class="quote">> g++ -o 3 3.cc </span >
succeds

<span class="quote">> clang -v</span >
clang version 3.5.2 (tags/RELEASE_352/final)
Target: x86_64-unknown-windows-cygnus
Thread model: posix

<span class="quote">> g++ --version</span >
g++ (GCC) 5.3.0</pre>
        </div>
      </p>
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