* Makefile.in (WARN_CFLAGS): Add -Wwrite-strings.
	(tree.o): Depend on output.h.

	* c-decl.c (pending_invalid_xref_file,
	current_function_prototype_file): Constify.
	(pushdecl): Constify a local char *.
	(define_label): Constify filename parameter.
	* c-lex.c (init_parse): Constify parameter and return value.
	* c-typeck.c (c_expand_asm_operands): Constify filename parameter.
	* c-tree.h: Update prototypes.
	* c-parse.in: Constify filename member of %union, and if_stmt_file.
	* c-parse.y, c-parse.c, c-parse.h, objc/objc-parse.y,
	objc/objc-parse.c: Regenerate.

	* dwarfout.c (dwarfout_init): Constify main_input_filename parameter.
	* dwarfout.h: Update prototypes.
	* expr.c (expand_expr): Constify a local char *.
	* flags.h: Constify main_input_filename.
	* function.c (expand_function_end): Constify filename parameter.
	* genrecog.c (make_insn_sequence): Use a character array for
	c_test_pos.
	(main): Remove unused variables.
	* input.h: Constify input_filename, main_input_filename, and
	file_stack.name.  Update prototypes.
	* output.h: Declare first_global_object_name and
	weak_global_object_name here, as const char *.
	* stmt.c (expand_asm_operands): Constify filename parameter.
	* toplev.c (compile_file, push_srcloc, debug_start_source_file):
	Constify filename parameter.
	(input_filename, main_input_filename): Constify.
	* toplev.h: Update prototypes.
	* tree.c: Include output.h.  Don't declare
	first_global_object_name or weak_global_object_name.  Clean up string
	bashing in get_file_function_name_long.
	* tree.h (struct tree_decl): Constify filename member.
	(input_filename): Constify.
	Update prototypes.
	* varasm.c (first_global_object_name, weak_global_object_name):
	Constify.
	(assemble_start_function, assemble_variable): Clean up string bashing.

	* gcc.c: Constify all spec-related strings initialized,
	transitively, from string constants.  Constify all strings
	and string variables related to multilibs.
	(set_spec, read_specs): Cast argument to free to PTR.
	(used_arg): Do not modify multilib_matches.  Use strncmp plus
	length comparison to compare multilib switches.
	* genmultilib: Constify everything declared in multilib.h.

ch:
	* ch-tree.h: Update prototypes.  Remove prototypes for
	functions declared elsewhere.
	* decl.c (define_label): Constify filename parameter.
	* grant.c (globalize_decl, set_default_grant_file): Constify
	local char * variables.  Don't declare
	first_global_object_name or asm_out_file.
	* lang.c (chill_real_input_filename): Constify.
	* lex.c (init_parse): Constify parameter and return value.
	* parse.c: Don't declare input_filename.
	(ch_expand_asm_operands): Constify filename parameter.
	(parse_multi_dimension_case_action): Constify local char *.
	* satisfy.c (safe_satisfy_decl): Constify local char *.

cp:
	* cp-tree.h: Constify tree_srcloc.filename, tinst_level.file,
	and pending_inline.filename.  Update prototypes.
	* decl.c (define_label): Constify filename parameter.
	* decl2.c (warn_if_unknown_interface): Constify local char *.
	* input.c Constify input_source.filename. Don't declare
	input_filename or lineno.  Constify filename parameter to feed_input.
	* lex.c (init_parse): Constify parameter and return value.
	(cp_pragma_interface, cp_pragma_implementation): Constify
	filename argument.
	(reinit_parse_for_method, reinit_parse_for_block,
	reinit_parse_for_expr, feed_defarg, handle_cp_pragma):
	Constify local char *.
	* pt.c: Don't declare lineno or input_filename.
	(print_template_context, tsubst_friend_function, tsubst_decl,
	tsubst, instantiate_decl): Constify local char *.
	* semantics.c (expand_body): Constify local char *.
	* tree.c (build_srcloc): Constify filename parameter.
	* typeck.c (c_expand_asm_operands): Constify filename
	parameter.

f:
	* com.c (ffecom_subscript_check_): Constify array_name
	parameter. Clean up string bashing.
	(ffecom_arrayref_, ffecom_char_args_x_): Constify array_name
	parameter.
	(ffecom_do_entry_, ffecom_gen_sfuncdef_, ffecom_start_progunit_,
	ffecom_sym_transform_, ffecom_sym_transform_assign_): Constify
	local char *.
	(init_parse): Constify parameter and return value.
	* lex.c: Include dwarfout.h instead of prototyping dwarfout_*
	functions here.
	(ffelex_file_pop_, ffelex_file_push_): Constify filename parameter.
	(ffelex_hash_, ffelex_include_): Constify local char *.
	* std.c (ffestd_exec_end): Constify local char *.
	* where.c (ffewhere_file_new): Constify filename parameter.
	* where.h: Update prototypes.

java:
	* check_init.c (check_init): Constify local char *.
	* class.c (push_class): Constify local char *.
	* java_tree.h: Update prototypes.
	* jcf-io.c (open_class): Constify filename parameter and
	return value.
	(find_class): Remove redundant string copy.  Cast return from
	open_class.
	* jcf-parse.c (read_class, parse_class_file, yyparse):
	Constify local char *.
	* jcf-write.c (generate_bytecode_insns, generate_classfile):
	Constify local char *.
	* jcf.h (JCF): Constify filename and classname.
	(JCF_FINISH): Cast args to FREE to char * when appropriate.
	* lang.c (init_parse): Constify parameter and return value.
	* lex.c (java_get_line_col): Constify filename parameter.
	* parse.h: Constify parser_ctxt.filename.  Update prototypes.
	* parse.y (java_parser_context_suspend,
	issue_warning_error_from_context, safe_layout_class): Constify
	local char *.
	* parse.c: Regenerate.

From-SVN: r33804

       * com.c (mark_tracker_head, mark_binding_level): Protoize.

       * where.c (mark_ffewhere_head): Likewise.

From-SVN: r31812

	* com.c (ffecom_init_0): Make double_ftype_double,
	float_ftype_float, ldouble_ftype_ldouble,
	ffecom_tree_ptr_to_fun_type_void local.
	(tracker_head): New static variable.
	(mark_tracker_head): New, marker procedure for tracker_head.
	(ffecom_save_tree_forever): New procedure.
	(ffecom_init_zero_): Remove obstack use.
	(ffecom_make_gfrt_): Remove obstack use.
	(ffecom_sym_transform_): Remove obstack use, save appropriate trees.
	(ffecom_transform_common_): Remove obstack use, save appropriate
	trees.
	(ffecom_type_namelist_): Remove obstack use, save appropriate
	trees.
	(ffecom_type_vardesc_): Remove obstack use, save appropriate trees.
	(ffecom_lookup_label): Remove obstack use, save appropriate trees.
	(duplicate_decls): Remove obstack use.
	(finish_function): push & pop ggc context around
	rest_of_compilation when building nested function.
	(mark_binding_level): New function.
	(init_decl_processing): Mark all the GC roots.
	(ggc_p): Set to 1.
	(lang_mark_tree): New function.
	(lang_mark_false_label_stack): New trivial function.
	* com.h (ffecom_save_tree_forever): Declare as external.
	* lex.c (ffelex_hash_): Use GC to allocate the filename string
	even when ffelex_kludge_flag_.
	* ste.c (ffeste_io_ialist_): Register a static root.
	(ffeste_io_inlist_): Likewise.
	(ffeste_io_icilist_): Likewise.
	(ffeste_io_cllist_): Likewise.
	(ffeste_io_cilist_): Likewise.
	(ffeste_io_olist_): Likewise.
	* Makefile.in (OBJS): Don't use ggc-callbacks.o.
	(OBJDEPS): Likewise.
	(GGC_H): New variable.
	Update dependencies.
	* where.c (ffewhere_head): New global.
	(mark_ffewhere_head): New marker procedure for ffewhere_head.
	(ffewhere_file_kill): Use GC to do memory management.
	(ffewhere_file_new): Use GC to do memory management.
	* ggc.j: New file.

From-SVN: r31142

From-SVN: r25221

        * bad.c (ffebad_finish): Change type of variable `c' to unsigned
        char, change type of variable `s' to unsigned char *.
        * com.c (ffecom_symbol_null_): Add missing initializers.
        * fini.c (MAXNAMELEN): Undef it before defining.
        * implic.c (ffeimplic_lookup_): Change type of parameter `c' to
        unsigned char.
        * intrin.c (ffeintrin_init_0): Cast the argument of ctype macros
        to (unsigned char).
        * lex.c (ffelex_splice_tokens): Change type of variable `p' to
        unsigned char *.
        (ffelex_token_name_from_names): Cast the argument of
        `ffelex_is_firstnamechar' to (unsigned char).
        (ffelex_token_names_from_names): Likewise.
        (ffelex_token_new_name): Likewise.
        (ffelex_token_new_names): Likewise.
        * malloc.c (malloc_root_): Add missing initializer.
        * stb.c (ffestb_do): Change type of variable `p' to unsigned char *.
        (ffestb_else) Likewise.
        (ffestb_else3_) Likewise.
        (ffestb_endxyz) Likewise.
        (ffestb_goto) Likewise.
        (ffestb_let) Likewise.
        (ffestb_varlist) Likewise.
        (ffestb_R522) Likewise.
        (ffestb_R528) Likewise.
        (ffestb_R834) Likewise.
        (ffestb_R835) Likewise.
        (ffestb_R838) Likewise.
        (ffestb_R1102) Likewise.
        (ffestb_blockdata) Likewise.
        (ffestb_R1212) Likewise.
        (ffestb_R810) Likewise.
        (ffestb_R10014_): Cast the argument of `ffelex_is_firstnamechar'
        to (unsigned char).
        (ffestb_V014): Change type of variable `p' to unsigned char *.
        (ffestb_dummy) Likewise.
        (ffestb_R524) Likewise.
        (ffestb_R547) Likewise.
        (ffestb_decl_chartype) Likewise.
        (ffestb_decl_dbltype) Likewise.
        (ffestb_decl_gentype) Likewise.
        (ffestb_decl_entsp_2_) Likewise.
        (ffestb_V027) Likewise.
        (ffestb_decl_R539) Likewise.
        * top.c (ffe_decode_option): Mark parameter `argc' with
        ATTRIBUTE_UNUSED.
        * where.c (ffewhere_unknown_line_): Add missing initializers.

From-SVN: r23030

From-SVN: r19876

From-SVN: r14772