<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/134986>134986</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [flang][preprocessor] Preprocessor splits a token while preserving column
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          Alf0nso
      </td>
    </tr>
</table>

<pre>
    When preprocessing the following input file using

```
flang -E -o output.f90 input.F90
```

```fortran
! input.F90
subroutine sub(a, b, c, n)
 print *, "HELLO "/&
                         &/" WORLD"
end subroutine sub
```

the file is preprocessed as

```fortran
      subroutine sub(a, b, c, n)
      print *, "HELLO "/  /" WORLD"

      end subroutine sub
```

which is not valid Fortran input.

```
error: Could not parse output.f90
output.f90:2:24: error: expected end of statement
 print *, "HELLO "/  /" WORLD"
                         ^
```

For comparison, gfortran (`gfortran -cpp -E input.F90`), preserves the input lines (in this case the output is the same as the input).
</pre>
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