re PR c/70436 (-Wparentheses missing ambiguous else warning)

re PR c/70436 (-Wparentheses missing ambiguous else warning)

	PR c/70436
c/
	* c-parser.c (c_parser_pragma): Add IF_P argument, pass it down
	where needed.
	(c_parser_external_declaration, c_parser_struct_or_union_specifier,
	c_parser_parameter_declaration, c_parser_compound_statement_nostart,
	c_parser_objc_class_instance_variables, c_parser_objc_methodprotolist):
	Adjust c_parser_pragma callers.
	(c_parser_statement_after_labels): Likewise.  Adjust c_parser_cilk_for
	caller.
	(c_parser_omp_structured_block): Add IF_P argument, pass it down to
	c_parser_statement.
	(c_parser_oacc_data, c_parser_oacc_host_data, c_parser_oacc_loop,
	c_parser_oacc_kernels_parallel, c_parser_omp_critical,
	c_parser_omp_simd, c_parser_omp_for, c_parser_omp_master,
	c_parser_omp_ordered, c_parser_omp_parallel, c_parser_omp_single,
	c_parser_omp_task, c_parser_omp_taskgroup, c_parser_omp_distribute,
	c_parser_omp_teams, c_parser_omp_target_data, c_parser_omp_target,
	c_parser_omp_taskloop, c_parser_omp_construct, c_parser_cilk_grainsize,
	c_parser_cilk_simd, c_parser_cilk_for): Add IF_P argument, pass it
	down where needed.
	(c_parser_omp_for_loop): Likewise.  Clear IF_P if nbraces.
	(c_parser_omp_sections_scope): Adjust c_parser_omp_structured_block
	calls.
cp/
	* parser.c (cp_parser_pragma): Add IF_P argument, pass it down
	where needed.
	(cp_parser_declaration_seq_opt, cp_parser_member_specification_opt,
	cp_parser_objc_interstitial_code, cp_parser_omp_declare_simd,
	cp_parser_oacc_routine): Adjust cp_parser_pragma callers.
	(cp_parser_statement): Likewise.  Adjust cp_parser_cilk_for caller.
	(cp_parser_omp_structured_block): Add IF_P argument, pass it down to
	cp_parser_statement.
	(cp_parser_oacc_data, cp_parser_oacc_host_data, cp_parser_oacc_loop,
	cp_parser_oacc_kernels_parallel, cp_parser_omp_critical,
	cp_parser_omp_simd, cp_parser_omp_for, cp_parser_omp_master,
	cp_parser_omp_ordered, cp_parser_omp_parallel, cp_parser_omp_single,
	cp_parser_omp_task, cp_parser_omp_taskgroup, cp_parser_omp_distribute,
	cp_parser_omp_teams, cp_parser_omp_target_data, cp_parser_omp_target,
	cp_parser_omp_taskloop, cp_parser_omp_construct,
	cp_parser_cilk_grainsize, cp_parser_cilk_simd, cp_parser_cilk_for):
	Add IF_P argument, pass it down where needed.
	(cp_parser_omp_for_loop): Likewise.  Clear IF_P if nbraces.
	(cp_parser_omp_sections_scope): Adjust cp_parser_omp_structured_block
	calls.
testsuite/
	* c-c++-common/Wparentheses-1.c: New test.
	* c-c++-common/gomp/Wparentheses-1.c: New test.
	* c-c++-common/gomp/Wparentheses-2.c: New test.
	* c-c++-common/gomp/Wparentheses-3.c: New test.
	* c-c++-common/gomp/Wparentheses-4.c: New test.
	* c-c++-common/cilk-plus/PS/Wparentheses-1.c: New test.
	* c-c++-common/cilk-plus/CK/Wparentheses-1.c: New test.
	* c-c++-common/goacc/Wparentheses-1.c: New test.

From-SVN: r235020