On 2014-10-07 10:57, Jonathan Wakely wrote:
It's probably simply
https://gcc.gnu.org/wiki/VerboseDiagnostics#missing_static_const_definition
Thanks for the reply.
What you propose makes sense. At least, it definitely explains why the
error appears only without compiler optimisation (that was driving me
insane).
However, the only functions which access those static constexpr
variables are member functions of the very class in which those
variables are defined (or actually, there is only one function, because
only one overload of xorshift_engine::xorshiftgen (in file xorshift.h)
will be enabled at compile-time, depending on the class templete
parameters). As far as I can see, the problem should happen only if
static const(expr) variables are accessed outside the class/struct body.
Besides, this doesn't explain why the error happens for shift_2 and
shift_3 but not for shift_1 (keep in mind - function
xorshift_engine::xorshiftgen always accesses each of these three static
constexpr variables, in order).
