<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/69046>69046</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang/tools/clang-fuzzer/proto-to-cxx/loop_proto_to_cxx.cpp:51: possible missing default in switch ?
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang
      </td>
    </tr>

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

    <tr>
      <th>Reporter</th>
      <td>
          dcb314
      </td>
    </tr>
</table>

<pre>
    Static analyser cppcheck says:

clang/tools/clang-fuzzer/proto-to-cxx/loop_proto_to_cxx.cpp:51:20: error: Found an exit path from function with non-void return type that has missing return statement [missingReturn]

Source code is

td::ostream &operator<<(std::ostream &os, const VarRef &x) {
 std::string which_loop = inner_loop ? "j" : "i";
  switch (x.arr()) {
    case VarRef::ARR_A:
      return os << "a[" << which_loop << "]";
    case VarRef::ARR_B:
      return os << "b[" << which_loop << "]";
    case VarRef::ARR_C:
      return os << "c[" << which_loop << "]";
  }
}

Suggest add default to switch or return statement at end of function.

</pre>
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