static-const-integral in-class-init without explicit definition

[RaJ M]

Appreciate the rapid speed response.

Missed to add a minor detail in my previous email.
I understand GCC supports and I also understand that it is must to
have the definition for the static const integral when the address is
taken ( in other words lvalue being used) and I have already seen the
link you sent.

What I wanted to understand specificially is,

since which version of GCC, GCC started supporting the static const
integral to be in-class initialization and doesn't expect explicit
definition in implementation file when the address is not used.

Jon,

This one will be received at your end twice. Missed to cc
gcc-help@gcc.gnu.org in the first one. Sorry about that.

Thanks.
Raja Gopal M
smrajagopal [at] gmail [dot] com