Why does this snippet using uniform initialization compile with g++4.6 but not g++4.7?

Question

Note that derived uses C++11 uniform initialization syntax to call the base class constructor.

class base
{
    protected:
        base()
        {}
};
         


        

Answer 1

compiling this with icpc ( intel compiler tested with version 11.1 -> 12.1) gives:

-bash-3.2$ icpc -std=c++0x test.c 
test.c(15): error: expected a declaration
          {}
          ^

test.c(12): error: expected a "("
              : base{} // <-- Note the c++11 curly brace syntax
                    ^

compilation aborted for test.c (code 2)

edit: but then again, c++11 is not fully implemented yet in icpc either http://software.intel.com/en-us/articles/c0x-features-supported-by-intel-c-compiler/

same as with g++ http://gcc.gnu.org/gcc-4.7/cxx0x_status.html

which clearly states it's still experimental, so a bug is very likely.