Thank you for the answers, Axel, Gabriel. Installing a newer version of g++ is a possibility, since this is research I am doing for a possible future port. The distro I am running has a few versions of gcc in its catalog, the question is, which version of gcc supports the extension? These are the versions of gcc I could potentially install to test it. gcc-4.4.1 gcc-4.3.4 gcc-4.3.3-r2 gcc-4.3.2-r4 gcc-4.3.2-r3 I will try installing gcc-4.4.1 first to see. Thanks for your help. J On Thu, 2009-09-24 at 15:41 -0500, Gabriel Dos Reis wrote: > On Thu, Sep 24, 2009 at 10:11 AM, Jean-Claude Gervais > <jc.gervais@xxxxxxxxxxxx> wrote: > > Hello, > > > > I am using gcc 4.1.2 and 4.3.2, looking for a way to specify the > > underlying type in a typedef enum declaration like so: > > > > typedef enum : unsigned char { first_tag, second_tag, third_tag } > > my_enum_type; > > There is a C++0x extension to do that, but you would have to get > newer versions of g++. > > > > > The preceding statement compiles with visualc++ but not with g++ > > > > Is there a way? > > > > Thanks > > J > > > >