message: Don't name variables after existing macros.
diff: @@ -76,7 +76,10 @@ static adios2::Params ParseEngineParams(std::string Input)
  // ADIOS2 Sst read
  TEST_F(SstReadTest, ADIOS2SstRead)
  {
  +// Apple Clang already defines this value.
  +#if !defined(SIZE_T_MAX)
  const size_t SIZE_T_MAX = std::numeric_limits<size_t>::max();
  +#endif
  // Each process would write a 1x8 array and all processes would
  // form a mpiSize * Nx 1D array
  