<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/126010>126010</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [flang] issue in using iso_c_binding functions
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            flang
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          shivaramaarao
      </td>
    </tr>
</table>

<pre>
    consider the following testcase
program main
use iso_c_binding
integer,target :: w,x

  print *, c_associated(c_loc(w), c_loc(x))

end program

this program compiles fine when used this way.
$flang test.f90

but when used by specifying the include path it throws error.

$flang -I<compiler_path>/include/flang test.f90
error: Semantic errors in test.f90
./test.f90:5:12: error: No specific function of generic 'c_associated' matches the actual arguments
    print *, c_associated(c_loc(w), c_loc(x))
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

e.g usage:
 /home/shivaram/stg_builds/clang+llvm-18.1.8-x86_64-linux-gnu-ubuntu-18.04/bin/flang-new -v -I /home/shivaram/stg_builds/clang+llvm-18.1.8-x86_64-linux-gnu-ubuntu-18.04/include/flang test.f90

The issue is reproducible with flang-21 as well.


</pre>
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