<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/68593>68593</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [flang] llvm-flang won't build w ith gcc 7.5.0
        </td>
    </tr>

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

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

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

<pre>
    To build LLVM, gcc 7.5 appears to be the agreed upon minimum requirement:
https://discourse.llvm.org/t/require-gcc-7-4-as-gcc-7-3-cannot-build-llvm-16-x-or-main/72310/52

but llvm-flang has build errors when built with gcc 7.5.0 (causing problems with builds on SLES 15)

Error seen:
```
 llvm-project/flang/include/flang/Common/enum-class.h: In static member function 'static std::string_view Fortran::parser::DefinedOperator::EnumToString(Fortran::parser::DefinedOperator::IntrinsicOperator)':

 llvm-project/flang/include/flang/Parser/parse-tree.h:597:3:   in constexpr expansion of 'Fortran::common::EnumNames<17>(((const char*)(& vaArgs)))'

 llvm-project/flang/include/flang/Common/enum-class.h:51:16: error: '(((const char*)(& vaArgs)) == 0)' is not a constant expression
     } else if (!start) {
                ^~~~~~
```
</pre>
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