c++ - strongly typed enums in g++-4.4 -

according gcc c++11 support status website, typed enums available g++4.4 , greater.

however following not compile g++4.4:

enum class foo {    value_1,    value_2 };  int main() {    foo = foo::value_1;    foo b = foo::value_2;    const bool test = ( < b ); } 

the error message error: invalid operands of types ‘foo’ , ‘foo’ binary ‘operator<’.

compilers accept code include g++-4.6, g++-4.7, g++-4.8 , clang++ 3.2. ( couldn't test g++-4.5 don't have installed (and ubuntu 13 doesn't want me to))

i provide fallback (rather old) compiler macro, dislike (where stop?...).

what's problem here? information of support wrong or bit missing that's not included in "support strongly-typed enums"? last option can think of: problem in code?

it's known bug. @casey found out, g++-4.4 did not support relational operations on strongly-typed enums. equality, fixed in version 4.4.1, fix other relations such < , > made 4.5.1 , above.

this original bug thread on gcc bugzilla: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38064