https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69241
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|c++ |ipa
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> ---
This is a problem with the gimple call generated in split_function. It
considers functions that return by invisible reference and calls
gimple_call_set_return_slot_opt, but doesn't then set the LHS of the call, so
we end up allocating a temporary stack slot for it, which is wrong for a
TREE_ADDRESSABLE type.
It seems that the LHS doesn't get set because m_fn3 doesn't actually have a
return statement, but for some reason return_bb is different from the exit
block, so we don't get to the code later in split_function that creates a
return statement.
Changing component to IPA.
