https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19808
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rguenth at gcc dot gnu.org
--- Comment #38 from Jason Merrill <jason at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #37)
If you add a
Y y{};
GCC warns about the Y constructor.
We don't warn about the implicit X constructor because we don't clobber the
object at the beginning of an implicit constructor, because
value-initialization zero-initializes the object before calling the implicit
constructor, and we mustn't clobber that initialization (bug 68006). The
middle end relies on the clobber to know what's uninitialized, so we don't get
the warning here.
It would be appropriate to give a maybe-uninitialized warning here, though. I
don't know how complicated it would be to do that using the existing
mechanisms.
