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externs1.h revision 1.163
      1 /*	$NetBSD: externs1.h,v 1.163 2022/07/01 21:25:39 rillig Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994, 1995 Jochen Pohl
      5  * All Rights Reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Jochen Pohl for
     18  *	The NetBSD Project.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 /*
     35  * main.c
     36  */
     37 extern	int	aflag;
     38 extern	bool	bflag;
     39 extern	bool	cflag;
     40 extern	bool	eflag;
     41 extern	bool	Fflag;
     42 extern	bool	hflag;
     43 extern	bool	pflag;
     44 extern	bool	rflag;
     45 extern	bool	uflag;
     46 extern	bool	vflag;
     47 extern	bool	yflag;
     48 extern	bool	wflag;
     49 extern	bool	zflag;
     50 extern	bool	Tflag;
     51 extern	bool	Pflag;
     52 
     53 extern	bool	allow_trad;
     54 extern	bool	allow_c90;
     55 extern	bool	allow_c99;
     56 extern	bool	allow_c11;
     57 extern	bool	allow_gcc;
     58 
     59 extern	void	norecover(void);
     60 
     61 /*
     62  * cgram.y
     63  */
     64 extern	int	block_level;
     65 extern	size_t	mem_block_level;
     66 extern	int	yydebug;
     67 
     68 extern	int	yyerror(const char *);
     69 extern	int	yyparse(void);
     70 
     71 /*
     72  * scan.l
     73  */
     74 extern  bool	in_gcc_attribute;
     75 extern	pos_t	curr_pos;
     76 extern	pos_t	csrc_pos;
     77 extern	bool	in_system_header;
     78 extern	symt_t	symtyp;
     79 extern	FILE	*yyin;
     80 
     81 extern	void	initscan(void);
     82 extern	int64_t	convert_integer(int64_t, tspec_t, unsigned int);
     83 extern	void	clear_warn_flags(void);
     84 extern	sym_t	*getsym(sbuf_t *);
     85 extern	void	clean_up_after_error(void);
     86 extern	sym_t	*pushdown(const sym_t *);
     87 extern	sym_t	*mktempsym(type_t *);
     88 extern	void	rmsym(sym_t *);
     89 extern	void	rmsyms(sym_t *);
     90 extern	void	inssym(int, sym_t *);
     91 extern	void	freeyyv(void *, int);
     92 extern	int	yylex(void);
     93 
     94 /*
     95  * mem1.c
     96  */
     97 extern	const	char *record_filename(const char *, size_t);
     98 extern	int	get_filename_id(const char *);
     99 extern	void	add_directory_replacement(char *);
    100 extern	const char *transform_filename(const char *, size_t);
    101 
    102 extern	void	initmem(void);
    103 
    104 extern	void	*block_zero_alloc(size_t);
    105 extern	void	*level_zero_alloc(size_t, size_t);
    106 extern	void	level_free_all(size_t);
    107 
    108 extern	void	*expr_zero_alloc(size_t);
    109 extern	tnode_t	*expr_alloc_tnode(void);
    110 extern	void	expr_free_all(void);
    111 extern	struct	memory_block *expr_save_memory(void);
    112 extern	void	expr_restore_memory(struct memory_block *);
    113 
    114 /*
    115  * debug.c
    116  */
    117 
    118 #ifdef DEBUG
    119 const char *declaration_kind_name(declaration_kind);
    120 const char *scl_name(scl_t);
    121 const char *symt_name(symt_t);
    122 const char *tqual_name(tqual_t);
    123 void	debug_dinfo(const dinfo_t *);
    124 void	debug_node(const tnode_t *);
    125 void	debug_sym(const char *, const sym_t *, const char *);
    126 void	debug_symtab(void);
    127 void	debug_printf(const char *fmt, ...) __printflike(1, 2);
    128 void	debug_print_indent(void);
    129 void	debug_indent_inc(void);
    130 void	debug_indent_dec(void);
    131 void	debug_enter(const char *);
    132 void	debug_step(const char *fmt, ...) __printflike(1, 2);
    133 void	debug_leave(const char *);
    134 #define	debug_enter()		(debug_enter)(__func__)
    135 #define	debug_leave()		(debug_leave)(__func__)
    136 #else
    137 #define	debug_noop()		do { } while (false)
    138 #define	debug_dinfo(d)		debug_noop()
    139 #define	debug_sym(p, sym, s)	debug_noop()
    140 #define	debug_symtab()		debug_noop()
    141 #define	debug_node(tn)		debug_noop()
    142 #define	debug_printf(...)	debug_noop()
    143 #define	debug_print_indent()	debug_noop()
    144 #define	debug_indent_inc()	debug_noop()
    145 #define	debug_indent_dec()	debug_noop()
    146 #define	debug_enter()		debug_noop()
    147 #define	debug_step(...)		debug_noop()
    148 #define	debug_leave()		debug_noop()
    149 #endif
    150 
    151 /*
    152  * err.c
    153  */
    154 extern	int	nerr;
    155 extern	int	sytxerr;
    156 
    157 extern	void	msglist(void);
    158 extern	void	error_at(int, const pos_t *, ...);
    159 extern	void	warning_at(int, const pos_t *, ...);
    160 extern	void	message_at(int, const pos_t *, ...);
    161 extern	void	error(int, ...);
    162 extern	void	warning(int, ...);
    163 extern	bool	gnuism(int, ...);
    164 extern	void	c99ism(int, ...);
    165 extern	void	c11ism(int, ...);
    166 extern	void	internal_error(const char *, int, const char *, ...)
    167      __attribute__((__noreturn__,__format__(__printf__, 3, 4)));
    168 extern	void	assert_failed(const char *, int, const char *, const char *)
    169 		__attribute__((__noreturn__));
    170 extern	void	update_location(const char *, int, bool, bool);
    171 extern	void	suppress_messages(char *);
    172 
    173 /*
    174  * decl.c
    175  */
    176 extern	dinfo_t	*dcs;
    177 extern	const	char *unnamed;
    178 extern	int	enumval;
    179 
    180 extern	void	initdecl(void);
    181 extern	type_t	*gettyp(tspec_t);
    182 extern	type_t	*block_dup_type(const type_t *);
    183 extern	type_t	*expr_dup_type(const type_t *);
    184 extern	type_t	*expr_unqualified_type(const type_t *);
    185 extern	bool	is_incomplete(const type_t *);
    186 extern	void	add_storage_class(scl_t);
    187 extern	void	add_type(type_t *);
    188 extern	void	add_qualifier(tqual_t);
    189 extern	void	addpacked(void);
    190 extern	void	add_attr_used(void);
    191 extern	void	begin_declaration_level(declaration_kind);
    192 extern	void	end_declaration_level(void);
    193 extern	void	setasm(void);
    194 extern	void	begin_type(void);
    195 extern	void	end_type(void);
    196 extern	int	length_in_bits(const type_t *, const char *);
    197 extern	unsigned int alignment_in_bits(const type_t *);
    198 extern	sym_t	*lnklst(sym_t *, sym_t *);
    199 extern	void	check_type(sym_t *);
    200 extern	sym_t	*declarator_1_struct_union(sym_t *);
    201 extern	sym_t	*bitfield(sym_t *, int);
    202 extern	qual_ptr *merge_qualified_pointer(qual_ptr *, qual_ptr *);
    203 extern	sym_t	*add_pointer(sym_t *, qual_ptr *);
    204 extern	sym_t	*add_array(sym_t *, bool, int);
    205 extern	sym_t	*add_function(sym_t *, sym_t *);
    206 extern	void	check_function_definition(sym_t *, bool);
    207 extern	sym_t	*declarator_name(sym_t *);
    208 extern	sym_t	*old_style_function_name(sym_t *);
    209 extern	type_t	*mktag(sym_t *, tspec_t, bool, bool);
    210 extern	const	char *storage_class_name(scl_t);
    211 extern	type_t	*complete_tag_struct_or_union(type_t *, sym_t *);
    212 extern	type_t	*complete_tag_enum(type_t *, sym_t *);
    213 extern	sym_t	*enumeration_constant(sym_t *, int, bool);
    214 extern	void	declare(sym_t *, bool, sbuf_t *);
    215 extern	void	copy_usage_info(sym_t *, sym_t *);
    216 extern	bool	check_redeclaration(sym_t *, bool *);
    217 extern	bool	eqptrtype(const type_t *, const type_t *, bool);
    218 extern	bool	eqtype(const type_t *, const type_t *, bool, bool, bool *);
    219 extern	void	complete_type(sym_t *, sym_t *);
    220 extern	sym_t	*declare_argument(sym_t *, bool);
    221 extern	void	check_func_lint_directives(void);
    222 extern	void	check_func_old_style_arguments(void);
    223 
    224 extern	void	declare_local(sym_t *, bool);
    225 extern	sym_t	*abstract_name(void);
    226 extern	void	global_clean_up(void);
    227 extern	sym_t	*declare_1_abstract(sym_t *);
    228 extern	void	check_size(sym_t *);
    229 extern	void	mark_as_set(sym_t *);
    230 extern	void	mark_as_used(sym_t *, bool, bool);
    231 extern	void	check_usage(dinfo_t *);
    232 extern	void	check_usage_sym(bool, sym_t *);
    233 extern	void	check_global_symbols(void);
    234 extern	void	print_previous_declaration(int, const sym_t *);
    235 extern	int	to_int_constant(tnode_t *, bool);
    236 
    237 /*
    238  * tree.c
    239  */
    240 extern	const tnode_t *before_conversion(const tnode_t *);
    241 extern	type_t	*block_derive_type(type_t *, tspec_t);
    242 extern	type_t	*expr_derive_type(type_t *, tspec_t);
    243 extern	bool	is_compiler_builtin(const char *);
    244 extern	tnode_t	*build_constant(type_t *, val_t *);
    245 extern	tnode_t	*build_name(sym_t *, bool);
    246 extern	tnode_t	*build_string(strg_t *);
    247 extern	tnode_t	*build_generic_selection(const tnode_t *,
    248 		    struct generic_association *);
    249 
    250 extern	tnode_t	*build_binary(tnode_t *, op_t, bool, tnode_t *);
    251 extern	tnode_t	*build_unary(op_t, bool, tnode_t *);
    252 extern	tnode_t	*build_member_access(tnode_t *, op_t, bool, sbuf_t *);
    253 extern	tnode_t	*cconv(tnode_t *);
    254 extern	bool	is_typeok_bool_compares_with_zero(const tnode_t *);
    255 extern	bool	typeok(op_t, int, const tnode_t *, const tnode_t *);
    256 extern	tnode_t	*promote(op_t, bool, tnode_t *);
    257 extern	tnode_t	*convert(op_t, int, type_t *, tnode_t *);
    258 extern	void	convert_constant(op_t, int, const type_t *, val_t *, val_t *);
    259 extern	tnode_t	*build_sizeof(const type_t *);
    260 extern	tnode_t	*build_offsetof(const type_t *, const sym_t *);
    261 extern	tnode_t	*build_alignof(const type_t *);
    262 extern	tnode_t	*cast(tnode_t *, type_t *);
    263 extern	tnode_t	*build_function_argument(tnode_t *, tnode_t *);
    264 extern	tnode_t	*build_function_call(tnode_t *, bool, tnode_t *);
    265 extern	val_t	*constant(tnode_t *, bool);
    266 extern	void	expr(tnode_t *, bool, bool, bool, bool);
    267 extern	void	check_expr_misc(const tnode_t *, bool, bool, bool,
    268 		    bool, bool, bool);
    269 extern	bool	constant_addr(const tnode_t *, const sym_t **, ptrdiff_t *);
    270 extern	strg_t	*cat_strings(strg_t *, strg_t *);
    271 extern  unsigned int type_size_in_bits(const type_t *);
    272 
    273 void begin_statement_expr(void);
    274 void do_statement_expr(tnode_t *);
    275 tnode_t *end_statement_expr(void);
    276 
    277 /*
    278  * func.c
    279  */
    280 extern	sym_t	*funcsym;
    281 extern	bool	reached;
    282 extern	bool	warn_about_unreachable;
    283 extern	bool	seen_fallthrough;
    284 extern	int	nargusg;
    285 extern	pos_t	argsused_pos;
    286 extern	int	nvararg;
    287 extern	pos_t	vapos;
    288 extern	int	printflike_argnum;
    289 extern	pos_t	printflike_pos;
    290 extern	int	scanflike_argnum;
    291 extern	pos_t	scanflike_pos;
    292 extern	bool	constcond_flag;
    293 extern	bool	llibflg;
    294 extern	int	lwarn;
    295 extern	bool	bitfieldtype_ok;
    296 extern	bool	plibflg;
    297 extern	bool	quadflg;
    298 
    299 extern	void	begin_control_statement(control_statement_kind);
    300 extern	void	end_control_statement(control_statement_kind);
    301 extern	void	check_statement_reachable(void);
    302 extern	void	funcdef(sym_t *);
    303 extern	void	funcend(void);
    304 extern	void	named_label(sym_t *);
    305 extern	void	case_label(tnode_t *);
    306 extern	void	default_label(void);
    307 extern	void	if1(tnode_t *);
    308 extern	void	if2(void);
    309 extern	void	if3(bool);
    310 extern	void	switch1(tnode_t *);
    311 extern	void	switch2(void);
    312 extern	void	while1(tnode_t *);
    313 extern	void	while2(void);
    314 extern	void	do1(void);
    315 extern	void	do2(tnode_t *);
    316 extern	void	for1(tnode_t *, tnode_t *, tnode_t *);
    317 extern	void	for2(void);
    318 extern	void	do_goto(sym_t *);
    319 extern	void	do_continue(void);
    320 extern	void	do_break(void);
    321 extern	void	do_return(bool, tnode_t *);
    322 extern	void	global_clean_up_decl(bool);
    323 extern	void	argsused(int);
    324 extern	void	constcond(int);
    325 extern	void	fallthru(int);
    326 extern	void	not_reached(int);
    327 extern	void	lintlib(int);
    328 extern	void	linted(int);
    329 extern	void	varargs(int);
    330 extern	void	printflike(int);
    331 extern	void	scanflike(int);
    332 extern	void	protolib(int);
    333 extern	void	longlong(int);
    334 extern	void	bitfieldtype(int);
    335 
    336 /*
    337  * init.c
    338  */
    339 extern	void	begin_initialization(sym_t *);
    340 extern	void	end_initialization(void);
    341 extern	sym_t	**current_initsym(void);
    342 
    343 extern	void	init_rbrace(void);
    344 extern	void	init_lbrace(void);
    345 extern	void	init_expr(tnode_t *);
    346 extern	void	begin_designation(void);
    347 extern	void	add_designator_member(sbuf_t *);
    348 extern	void	add_designator_subscript(range_t);
    349 
    350 /*
    351  * emit.c
    352  */
    353 extern	void	outtype(const type_t *);
    354 extern	void	outsym(const sym_t *, scl_t, def_t);
    355 extern	void	outfdef(const sym_t *, const pos_t *, bool, bool,
    356 		    const sym_t *);
    357 extern	void	outcall(const tnode_t *, bool, bool);
    358 extern	void	outusg(const sym_t *);
    359 
    360 /*
    361  * lex.c
    362  */
    363 extern	int	lex_name(const char *, size_t);
    364 extern	int	lex_integer_constant(const char *, size_t, int);
    365 extern	int	lex_floating_constant(const char *, size_t);
    366 extern	int	lex_operator(int, op_t);
    367 extern	int	lex_string(void);
    368 extern	int	lex_wide_string(void);
    369 extern	int	lex_character_constant(void);
    370 extern	int	lex_wide_character_constant(void);
    371 extern	void	lex_directive(const char *);
    372 extern	void	lex_next_line(void);
    373 extern	void	lex_comment(void);
    374 extern	void	lex_slash_slash_comment(void);
    375 extern	void	lex_unknown_character(int);
    376 extern	int	lex_input(void);
    377 
    378 /*
    379  * ckbool.c
    380  */
    381 extern	bool	typeok_scalar_strict_bool(op_t, const mod_t *, int,
    382 		    const tnode_t *, const tnode_t *);
    383 extern	bool	fallback_symbol_strict_bool(sym_t *);
    384 
    385 /*
    386  * ckctype.c
    387  */
    388 extern	void	check_ctype_function_call(const tnode_t *, const tnode_t *);
    389 extern	void	check_ctype_macro_invocation(const tnode_t *, const tnode_t *);
    390 
    391 /*
    392  * ckgetopt.c
    393  */
    394 extern	void	check_getopt_begin_while(const tnode_t *);
    395 extern	void	check_getopt_begin_switch(void);
    396 extern	void	check_getopt_case_label(int64_t);
    397 extern	void	check_getopt_end_switch(void);
    398 extern	void	check_getopt_end_while(void);
    399