P2174 Compound Literals

[wg21bot]

P2174R0 Compound Literals (Zhihao Yuan)

[jfbastien]

Discussed in today's EWG telecon. One notable action item is to sync with the C committee people on this.

Polls:

Add compound literal to C++ (assuming my favored solution to the lifetime issues are addressed)

SF	F	N	A	SA
3	2	12	3	1

C++ compound literals should only work for trivial types (so that destructors aren't an issue)

SF	F	N	S	SA
1	8	7	0	4

C++ compound literals should match C++'s temporary object lifetime semantics

SF	F	N	S	SA
2	6	4	2	1

C++ compound literals should match C's block lifetime semantics

SF	F	N	S	SA
2	3	6	3	1