On Wed, Jan 23, 2019 at 09:00:36AM -0500, Jason Merrill wrote:
> I was talking about digest_init, not reshape_init. digest_init calls
> convert_for_initialization.
/facepalm
So yes, digest_init calls convert_for_initialization which will end up
calling perform_implicit_conversion_flags which could call convert_like_real
where the narrowing warnings are given, but it doesn't, we go to this case:
else if (processing_template_decl && conv->kind != ck_identity)
{
/* In a template, we are only concerned about determining the
type of non-dependent expressions, so we do not have to
perform the actual conversion. But for initializers, we
need to be able to perform it at instantiation
(or instantiate_non_dependent_expr) time. */
expr = build1 (IMPLICIT_CONV_EXPR, type, expr);
finish_decltype_type throws away the expression because it's not dependent, and
only uses its type. So narrowing remains undetected. Not sure if I should mess
with perform_implicit_conversion_flags.
