P0329R4: Designated Initialization
* parser.c (cp_parser_initializer_clause): List in comment grammar
designated-initializer-list.
(cp_parser_initializer_list): Allow .identifier = without pedwarn for
C++2A, parse .identifier { ... }. Improve location_t argument to
pedwarn. Add pedwarn for [cst] = designators. Diagnose ... in
designated initializer list. Diagnose mixing designated and
non-designated initializer clauses for C++2A. Diagnose duplicated
identifiers in designators.
* name-lookup.h (search_anon_aggr): New declaration.
* name-lookup.c (fields_linear_search): Use search_anon_aggr.
(search_anon_aggr): New function.
* typeck2.c (process_init_constructor_record): Allow designator
to skip over some non-static data members. Handle anonymous
aggregates. Add diagnostics for designator order not matching
member declaration order.
* g++.dg/ext/desig2.C: Adjust comment, no sorry about designator
refering to second member.
(b): New variable and associated expected diagnostic.
* g++.dg/ext/desig4.C: For C++2A expect diagnostics.
* g++.dg/ext/desig5.C: Add dg-do dg-compile and empty dg-options.
* g++.dg/ext/desig8.C: Likewise.
* g++.dg/ext/desig9.C: New test.
* g++.dg/ext/pr27019.C: Don't expect any diagnostics.
* g++.dg/init/error2.C: Adjust expected diagnostics.
* g++.dg/cpp0x/desig1.C: Add dg-options with -pedantic, expect
warning on C99 designators.
* g++.dg/cpp2a/desig1.C: New test.
* g++.dg/cpp2a/desig2.C: New test.
* g++.dg/cpp2a/desig3.C: New test.
* g++.dg/cpp2a/desig4.C: New test.
* g++.dg/cpp2a/desig5.C: New test.
* g++.dg/cpp2a/desig6.C: New test.
From-SVN: r254964
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