code: private String getDetect64BitPortabilityProblems(final CommandLineCompilerConfiguration compilerConfig) {
      String warn64 = null;
      final String[] args = compilerConfig.getPreArguments();
      for (final String arg : args) {
        if ("/Wp64".equals(arg)) {
          warn64 = this.trueLiteral;
        }
      }
      return warn64;
    }
docs: Get value of Detect64BitPortabilityProblems property.
  
  @param compilerConfig
  compiler configuration.
  @return value of Detect64BitPortabilityProblems property.