053bcc97f4
We've been trying for a while to avoid TARGET_EXPRs in template code, but
there were still a few that snuck through, and the one in this case broke
the code that tried to handle it. Fixed by using IMPLICIT_CONV_EXPR, as we
have done elsewhere.
I also noticed that finish_compound_literal was assuming that all T{init}
were for aggregate T, and we got a few more TARGET_EXPRs from that. Fixed
by only messing with TARGET_EXPR if we actually have an aggregate init.
PR c++/101072
gcc/cp/ChangeLog:
* cp-tree.h (build_implicit_conv_flags): Declare.
* call.cc (build_implicit_conv_flags): Split out from...
(perform_implicit_conversion_flags): ...here.
* decl.cc (check_initializer): Use it.
* pt.cc (tsubst_copy_and_build): Remove TARGET_EXPR handling.
* semantics.cc (finish_compound_literal): Don't treat
scalar values like CONSTRUCTORs.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/constexpr-empty14a.C: New test.
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