Warning fixes:

Warning fixes:

	* Makefile.in (c-lang.o): Depend on c-tree.h, c-lex.h and toplev.h.
	(c-lex.o): Depend on output.h.
	(c-common.o): Likewise.
	(stmt.o): Likewise.
	(calls.o): Likewise.
	(integrate.o): Depend on toplev.h.
	(regclass.o): Depend on output.h.
	(final.o): Depend on reload.h.
	* c-common.c: Include output.h.
	(check_format_info): Remove unused variable `integral_format'.
	* c-decl.c (print_lang_decl): Mark parameters `file', `node' and
	`indent' with ATTRIBUTE_UNUSED.
	(print_lang_type): Likewise.
	(maybe_build_cleanup): Likewise for parameter `decl'.
	(copy_lang_decl): Likewise for parameter `node'.
	* c-lang.c: Include c-tree.h, c-lex.h and toplev.h.
	(lang_print_xnode): Mark parameters `file', `node' and `indent'
 	with ATTRIBUTE_UNUSED.
	(lookup_interface): Likewise for parameter `arg'.
	(is_class_name): Likewise.
	(maybe_objc_check_decl): Likewise for parameter `decl'.
	(maybe_objc_comptypes): Likewise for parameters `lhs', `rhs' and
	`reflexive'.
	(maybe_objc_method_name): Likewise for parameter `decl'.
	(build_objc_string): Likewise for parameters `len' and `str'.
	* c-lex.c: Include output.h.
	* c-lex.h (position_after_white_space): Correct typo in prototype.
	* c-tree.h (finish_file, c_expand_start_cond, c_expand_start_else,
 	c_expand_end_cond, init_iterators): Add prototypes.
	* caller-save.c (set_reg_live): Mark parameters `reg' and `setter'
	with ATTRIBUTE_UNUSED.
	* calls.c: Include output.h.
	* cccp.c (pipe_closed): Mark parameter `signo' with
 	ATTRIBUTE_UNUSED.
	* combine.c: Move inclusion of expr.h to after insn-config.h.
	* iris6.h (ASM_IDENTIFY_GCC, ASM_IDENTIFY_LANGUAGE): Don't define
	as empty, rather define as ((void)0).
	* sparc.c (sparc_check_64): Add braces around ambiguous `else'.
	Add parentheses around assignment used as truth value.
	* cplus-dem.c (squangle_mop_up): Change return type to void.
	(internal_cplus_demangle): Remove unused parameter `options'.
	All callers changed.
	(cplus_demangle_opname): Remove function wide variable `int i' and
 	replace with `size_t i' at each location where it is used.
	(cplus_demangle_opname): change type of `i' from int to size_t.
	* cppexp.c (right_shift): Mark parameter `pfile' with
	ATTRIBUTE_UNUSED.
	* cpphash.c (cpp_lookup): Likewise.
	(cpp_hash_cleanup): Likewise.
	* cpplib.c (parse_name): Add a prototype and make it static.
	(null_underflow): Mark parameter `pfile' with ATTRIBUTE_UNUSED.
	(null_cleanup): Likewise for parameters `pbuf' and `pfile'.
	(macro_cleanup): Likewise for parameter `pfile'.
	(file_cleanup): Likewise.
	* cpplib.h (cpp_reader_init, cpp_options_init, cpp_start_read,
 	cpp_read_check_assertion, skip_rest_of_line): Add prototypes.
	* crtstuff.c (force_to_data, __CTOR_LIST__, force_to_data,
	__DTOR_END__, __FRAME_END__): Mark with ATTRIBUTE_UNUSED.
	* cse.c (cse_check_loop_start): Mark parameter `set' with
 	ATTRIBUTE_UNUSED.
	* dbxout.c (flag_minimal_debug, have_used_extensions,
	source_label_number): Move inside macro wrapper check against
	defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO).
	* dwarf2out.c (gen_entry_point_die): Hide prototype and definition.
	* except.h (doing_eh): Provide prototype.
	* expr.c: Move inclusion of expr.h to after insn-config.h.
	* final.c: Include reload.h.
	(shorten_branches): Cast the first argument of bzero to char *.
	* fix-header.c (cpp_print_containing_files): Mark parameter
 	`pfile' with ATTRIBUTE_UNUSED.
	(cpp_fatal): Likewise.
	* flow.c (find_basic_blocks_1): Cast the first argument of bzero
	to char *.
	* genattrtab.c (make_length_attrs): Change the type of variable
	`i' from int to size_t.
	(zero_fn): Mark parameter `exp' with ATTRIBUTE_UNUSED.
	(one_fn): Likewise.
	* genextract.c (main): When generating insn-extract.c, mark
	variable `junk' with ATTRIBUTE_UNUSED.
	* gengenrtl.c (gencode): When generating genrtl.c, cast the first
	argument of bzero to char*.
	* integrate.c: Include toplev.h.
	* libgcc2.c: Wrap `struct exception_table' and
	`find_exception_handler' in macro DWARF2_UNWIND_INFO.
	* objc/Make-lang.in (objc-act.o): Depend on toplev.h.
	* objc/objc-act.c: Include toplev.h.
	(lang_print_xnode): Mark parameters `file', `node' and `indent'
	with ATTRIBUTE_UNUSED.
	(finish_protocol): Likewise for parameter `protocol'.
	* output.h (declare_weak): Add prototype.
	(decode_reg_name): Don't wrap with TREE_CODE macro.
	(assemble_alias): Add prototype.
	* regclass.c: Include output.h.
	* reload.h (reloads_conflict): Add prototype.
	* rtl.h (print_rtl_single, mark_elimiation, reg_class_subset_p,
	output_func_start_profiler): Add prototypes.
	* rtlanal.c (reg_set_p_1): Mark parameters `x' and `pat' with
 	ATTRIBUTE_UNUSED.
	* scan-decls.c: Include scan.h.
	* scan.h (recognized_function, recognized_extern): Add prototypes.
	* stmt.c: Include output.h.
	* toplev.c (error_for_asm, warning_for_asm): Remove prototypes.
	(output_lang_identify): Hide prototype and definition.
	(float_signal): Mark parameter `signo' with ATTRIBUTE_UNUSED.
	(pipe_closed): Likewise.
	* toplev.h (count_error, strip_off_ending, error_for_asm,
 	warning_for_asm): Add prototypes.

From-SVN: r19712