https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105838
--- Comment #12 from Jason Merrill <jason at gcc dot gnu.org> ---
Another significant part of the problem is that vector<string> doesn't have a
generic initializer_list constructor. Adding
template <typename __elt>
_GLIBCXX20_CONSTEXPR
vector(initializer_list<__elt> __l,
const allocator_type& __a = allocator_type())
: _Base(__a)
{
_M_range_initialize(__l.begin(), __l.end(),
random_access_iterator_tag());
}
so that it can construct from initializer_list<const char *> makes the
construction into a simple loop over a static array.
Users can do this optimization manually by writing e.g.
auto init = {
"aahing", "aaliis", "aarrgh", "abacas", "abacus", "abakas", "abamps",
"abands", "abased", "abaser", "abases", "abasia",
};
const std::vector<std::string> lst (init.begin(), init.end());
and so using the (template) iterator constructor instead of the (non-template)
initializer_list constructor. But that shouldn't be necessary.
Jonathan, has anyone suggested adding generic init_list constructors to the
container classes?
What do you think about doing the above translation in the compiler? Is the
compiler allowed to do that?
