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      <base href="https://bugs.llvm.org/">
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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 - fatal internal error: CHECK(length.isExplicit()) failed at llvm-project/flang/lib/Semantics/compute-offsets.cpp(357)"
   href="https://bugs.llvm.org/show_bug.cgi?id=47265">47265</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>fatal internal error: CHECK(length.isExplicit()) failed at llvm-project/flang/lib/Semantics/compute-offsets.cpp(357)
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>flang
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>trunk
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>enhancement
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Frontend
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>riccardo.bertossa@gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>David.Truby@arm.com, jperier@nvidia.com, kirankumartp@gmail.com, llvm-bugs@lists.llvm.org, sscalpone@nvidia.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=23870" name="attach_23870" title="source code that triggers the problem">attachment 23870</a> <a href="attachment.cgi?id=23870&action=edit" title="source code that triggers the problem">[details]</a></span>
source code that triggers the problem

I'm trying to compile the full Quantum Espresso (
<a href="https://www.quantum-espresso.org/">https://www.quantum-espresso.org/</a>) project with flang, but the build fails very
early with the command reported. I'm using the last git version of the full
llvm-project, that I compiled from source with gcc 8.3.0 and 

cmake -DCMAKE_INSTALL_PREFIX=/scratch/llvm/
-DLLVM_ENABLE_PROJECTS="clang;libcxx;libcxxabi;flang;lld;clang-tools-extra;libunwind;compiler-rt;openmp;polly;libclc;klee"
-DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++ ../llvm

the problem is the following:

$ flang iotk_attr_interf.f90 -c
fatal internal error: CHECK(length.isExplicit()) failed at 

scratch/rbertoss/llvm/llvm-project/flang/lib/Semantics/compute-offsets.cpp(357) 
/scratch/llvm/bin/flang: line 29: 23708 Aborted                 (core dumped)
${wd}/bin/f18 -module-suffix .f18.mod -intrinsic-module-directory
/scratch/llvm/include/flang $*

You can find in the attachment a set of source files that reproduce the problem

thank you</pre>
        </div>
      </p>


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