Alexander Nasonov ha escrito:
JoaquÃn Mª López Muñoz <joaquin <at> tid.es> writes:
OK, I think I've got it: MSVC++ 6.5 behaves funny with static constants inside templates, as it does not see their correct value during template parsing. For instance, the following:
#include <boost/config.hpp> #include <boost/static_assert.hpp>
template<typename T> struct foo { BOOST_STATIC_CONSTANT(int,x=2); BOOST_STATIC_ASSERT(x==2); };
int main() { return 0; }
fails at the static assertion line (x is seen as 1, btw). After instantiation, however, the static constant holds the correct value, this phenomenon only happens at the parsing stage.
Does this change
BOOST_STATIC_ASSERT(foo<T>::x==2); // qualified name
help?
No, same assertion failure :(
Is it OK to commit? I'd rather disabled compile-time calculation.
The decision is yours to make, of course, but disabling the static assertions seems to suffice --the compile-time calculations are indeed OK and hold correct values once lcast_precision is instantiated. Joaquín M López Muñoz Telefónica, Investigación y Desarrollo