GCC Compiler Warning: extended initializer lists only available with c++0x

Question

Using this member initialization...

StatsScreen::StatsScreen( GameState::State level )
    : m_Level( level ) {
  ...//
}

I get the following warning...

extended initializer lists only available with -std=c++0x or -std=gnu++0x

Any information regarding this warning?

Edit: Warning went away after I removed one of the member that was assigned to a value inside the constructor (couldn't be done through member initialization) and made it a local variable instead of a class member. Still want to know what that warnings means though.

Answer 1

I think you are initializing the object with {...} instead of (...):

StatsScreen ss{...}; // only available in C++0x
StatsScreen ss(...); // OK in C++98

To compile your code as C++0x code, just add the following flag when compiling:

g++ test.cpp -std=c++0x