On 12/2/19 5:09 PM, Marek Polacek wrote:
On Mon, Dec 02, 2019 at 12:09:17PM -0500, Jason Merrill wrote:
On 12/1/19 8:09 PM, Marek Polacek wrote:
+ || (skip_empty
+ && is_really_empty_class (TREE_TYPE (field),
This should probably check DECL_SIZE (field) == size_zero_node instead,
since that will properly distinguish between overlapping and non-overlapping
data members of empty class type. And please test how this works with data
members of empty class type both with and without [[no_unique_address]].
I don't think that's possible -- empty classes in C++ have sizeof(char), unless
their only member is char[0], then their DECL_SIZE is 0.
I think you're talking about the TYPE_SIZE of the class, and I'm talking
about the DECL_SIZE of the FIELD_DECL.
I've added two testcases: constexpr-init13.C and constexpr-init14.C. Is there
another scenario regarding [[no_unique_address]] that you want me to test?
I think the classes with empty base fields need to have another
initialized field after them to have a chance of tripping
if (idx != field)
Jason
