[cfe-dev] clang vs GCC error case: both ‘const’ and ‘constexpr’ cannot be used here

[Stephen Kelly]

Hi there,

clang compiles the following code, but GCC does not:



#include <iostream>

static constexpr const char Data[] = {
  'D', 'A', 'T', 'A',
};
static constexpr const char *data_func() { return Data; }

int main(int argc, char **argv)
{

  char c = 'T';

  switch(c)
  {
    case *data_func():
      std::cout << "GOT A D" << std::endl;
      break;
    case *(data_func() + 2):
      std::cout << "GOT A T" << std::endl;
  }
}



$ clang++ --version
clang version 3.2 
Target: x86_64-unknown-linux-gnu
Thread model: posix

$ g++ -dumpversion
4.6.1

$ g++ main.cpp -std=c++0x
main.cpp:163:48: error: both ‘const’ and ‘constexpr’ cannot be used here


Which compiler is buggy?

Thanks,

Steve.