externs1.h revision 1.199 
1/*	$NetBSD: externs1.h,v 1.199 2023/07/28 21:50:03 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#include <signal.h>
35
36/*
37 * main1.c
38 */
39extern	int	aflag;
40extern	bool	bflag;
41extern	bool	cflag;
42extern	bool	eflag;
43extern	bool	Fflag;
44extern	bool	hflag;
45extern	bool	pflag;
46extern	bool	rflag;
47extern	bool	uflag;
48extern	bool	vflag;
49extern	bool	yflag;
50extern	bool	wflag;
51extern	bool	zflag;
52extern	bool	Tflag;
53extern	bool	Pflag;
54
55extern	bool	allow_trad;
56extern	bool	allow_c90;
57extern	bool	allow_c99;
58extern	bool	allow_c11;
59extern	bool	allow_c23;
60extern	bool	allow_gcc;
61
62extern sig_atomic_t fpe;
63
64void	norecover(void);
65
66/*
67 * cgram.y
68 */
69extern	int	block_level;
70extern	size_t	mem_block_level;
71extern	int	yydebug;
72
73int	yyerror(const char *);
74int	yyparse(void);
75
76/*
77 * scan.l
78 */
79extern  bool	in_gcc_attribute;
80extern	pos_t	curr_pos;
81extern	pos_t	csrc_pos;
82extern	bool	in_system_header;
83extern	symt_t	symtyp;
84extern	FILE	*yyin;
85
86void	initscan(void);
87int64_t	convert_integer(int64_t, tspec_t, unsigned int);
88void	clear_warn_flags(void);
89sym_t	*getsym(sbuf_t *);
90void	clean_up_after_error(void);
91sym_t	*pushdown(const sym_t *);
92sym_t	*mktempsym(type_t *);
93void	rmsym(sym_t *);
94void	symtab_remove_level(sym_t *);
95void	inssym(int, sym_t *);
96void	freeyyv(void *, int);
97int	yylex(void);
98
99/*
100 * mem1.c
101 */
102const	char *record_filename(const char *, size_t);
103int	get_filename_id(const char *);
104void	add_directory_replacement(char *);
105const char *transform_filename(const char *, size_t);
106
107#ifdef DEBUG_MEM
108void	*block_zero_alloc(size_t, const char *);
109void	*level_zero_alloc(size_t, size_t, const char *);
110#else
111void	*block_zero_alloc(size_t);
112void	*level_zero_alloc(size_t, size_t);
113#define block_zero_alloc(size, descr) (block_zero_alloc)(size)
114#define level_zero_alloc(level, size, descr) (level_zero_alloc)(level, size)
115#endif
116void	level_free_all(size_t);
117
118#ifdef DEBUG_MEM
119void	*expr_zero_alloc(size_t, const char *);
120#else
121void	*expr_zero_alloc(size_t);
122#define expr_zero_alloc(size, descr) (expr_zero_alloc)(size)
123#endif
124tnode_t	*expr_alloc_tnode(void);
125void	expr_free_all(void);
126memory_pool expr_save_memory(void);
127void	expr_restore_memory(memory_pool);
128
129/*
130 * debug.c
131 */
132
133#ifdef DEBUG
134const char *decl_level_kind_name(decl_level_kind);
135const char *scl_name(scl_t);
136const char *symt_name(symt_t);
137const char *type_qualifiers_string(type_qualifiers);
138const char *function_specifier_name(function_specifier);
139void	debug_dcs(bool);
140void	debug_node(const tnode_t *);
141void	debug_type(const type_t *);
142void	debug_sym(const char *, const sym_t *, const char *);
143void	debug_symtab(void);
144void	debug_printf(const char *fmt, ...) __printflike(1, 2);
145void	debug_print_indent(void);
146void	debug_indent_inc(void);
147void	debug_indent_dec(void);
148void	debug_enter_func(const char *);
149void	debug_step(const char *fmt, ...) __printflike(1, 2);
150void	debug_leave_func(const char *);
151#define	debug_enter()		debug_enter_func(__func__)
152#define	debug_leave()		debug_leave_func(__func__)
153#else
154#define	debug_noop()		do { } while (false)
155#define	debug_dcs(all)		debug_noop()
156#define	debug_sym(p, sym, s)	debug_noop()
157#define	debug_symtab()		debug_noop()
158#define	debug_node(tn)		debug_noop()
159#define	debug_type(tp)		debug_noop()
160#define	debug_printf(...)	debug_noop()
161#define	debug_print_indent()	debug_noop()
162#define	debug_indent_inc()	debug_noop()
163#define	debug_indent_dec()	debug_noop()
164#define	debug_enter()		debug_noop()
165#define	debug_step(...)		debug_noop()
166#define	debug_leave()		debug_noop()
167#endif
168
169/*
170 * err.c
171 */
172extern	bool	seen_error;
173extern	bool	seen_warning;
174extern	int	sytxerr;
175extern	bool	any_query_enabled;
176
177void	msglist(void);
178void	error_at(int, const pos_t *, ...);
179void	warning_at(int, const pos_t *, ...);
180void	message_at(int, const pos_t *, ...);
181void	error(int, ...);
182void	warning(int, ...);
183bool	gnuism(int, ...);
184void	c99ism(int, ...);
185void	c11ism(int, ...);
186void	c23ism(int, ...);
187void	assert_failed(const char *, int, const char *, const char *)
188		__attribute__((__noreturn__));
189void	update_location(const char *, int, bool, bool);
190void	suppress_messages(const char *);
191
192void	query_message(int, ...);
193void	enable_queries(const char *);
194
195/*
196 * decl.c
197 */
198extern	decl_level *dcs;
199extern	const char unnamed[];
200extern	int	enumval;
201
202void	initdecl(void);
203type_t	*gettyp(tspec_t);
204type_t	*block_dup_type(const type_t *);
205type_t	*expr_dup_type(const type_t *);
206type_t	*expr_unqualified_type(const type_t *);
207bool	is_incomplete(const type_t *);
208void	dcs_add_function_specifier(function_specifier);
209void	dcs_add_storage_class(scl_t);
210void	dcs_add_type(type_t *);
211void	dcs_add_qualifiers(type_qualifiers);
212void	dcs_add_packed(void);
213void	dcs_set_used(void);
214void	begin_declaration_level(decl_level_kind);
215void	end_declaration_level(void);
216void	dcs_set_asm(void);
217void	dcs_begin_type(void);
218void	dcs_end_type(void);
219int	length_in_bits(const type_t *, const char *);
220unsigned int alignment_in_bits(const type_t *);
221sym_t	*concat_symbols(sym_t *, sym_t *);
222void	check_type(sym_t *);
223sym_t	*declare_unnamed_member(void);
224sym_t	*declare_member(sym_t *);
225sym_t	*set_bit_field_width(sym_t *, int);
226void	add_type_qualifiers(type_qualifiers *, type_qualifiers);
227qual_ptr *append_qualified_pointer(qual_ptr *, qual_ptr *);
228sym_t	*add_pointer(sym_t *, qual_ptr *);
229sym_t	*add_array(sym_t *, bool, int);
230sym_t	*add_function(sym_t *, struct parameter_list);
231void	check_extern_declaration(const sym_t *);
232void	check_function_definition(sym_t *, bool);
233sym_t	*declarator_name(sym_t *);
234sym_t	*old_style_function_parameter_name(sym_t *);
235type_t	*make_tag_type(sym_t *, tspec_t, bool, bool);
236const	char *storage_class_name(scl_t);
237type_t	*complete_struct_or_union(sym_t *);
238type_t	*complete_enum(sym_t *);
239sym_t	*enumeration_constant(sym_t *, int, bool);
240void	declare(sym_t *, bool, sbuf_t *);
241void	copy_usage_info(sym_t *, sym_t *);
242bool	check_redeclaration(sym_t *, bool *);
243bool	pointer_types_are_compatible(const type_t *, const type_t *, bool);
244bool	types_compatible(const type_t *, const type_t *, bool, bool, bool *);
245void	complete_type(sym_t *, sym_t *);
246sym_t	*declare_argument(sym_t *, bool);
247void	check_func_lint_directives(void);
248void	check_func_old_style_arguments(void);
249
250void	declare_local(sym_t *, bool);
251sym_t	*abstract_name(void);
252void	global_clean_up(void);
253sym_t	*declare_abstract_type(sym_t *);
254void	check_size(sym_t *);
255void	mark_as_set(sym_t *);
256void	mark_as_used(sym_t *, bool, bool);
257void	check_usage(decl_level *);
258void	check_usage_sym(bool, sym_t *);
259void	check_global_symbols(void);
260void	print_previous_declaration(const sym_t *);
261int	to_int_constant(tnode_t *, bool);
262
263/*
264 * tree.c
265 */
266const tnode_t *before_conversion(const tnode_t *);
267type_t	*block_derive_type(type_t *, tspec_t);
268type_t	*expr_derive_type(type_t *, tspec_t);
269bool	is_compiler_builtin(const char *);
270tnode_t	*build_constant(type_t *, val_t *);
271tnode_t	*build_name(sym_t *, bool);
272tnode_t	*build_string(strg_t *);
273tnode_t	*build_generic_selection(const tnode_t *,
274		    struct generic_association *);
275
276tnode_t	*build_binary(tnode_t *, op_t, bool, tnode_t *);
277tnode_t	*build_unary(op_t, bool, tnode_t *);
278tnode_t	*build_member_access(tnode_t *, op_t, bool, sbuf_t *);
279tnode_t	*cconv(tnode_t *);
280bool	is_typeok_bool_compares_with_zero(const tnode_t *);
281bool	typeok(op_t, int, const tnode_t *, const tnode_t *);
282tnode_t	*promote(op_t, bool, tnode_t *);
283tnode_t	*convert(op_t, int, type_t *, tnode_t *);
284void	convert_constant(op_t, int, const type_t *, val_t *, val_t *);
285tnode_t	*build_sizeof(const type_t *);
286tnode_t	*build_offsetof(const type_t *, const sym_t *);
287tnode_t	*build_alignof(const type_t *);
288tnode_t	*cast(tnode_t *, type_t *);
289tnode_t	*build_function_argument(tnode_t *, tnode_t *);
290tnode_t	*build_function_call(tnode_t *, bool, tnode_t *);
291val_t	*integer_constant(tnode_t *, bool);
292void	expr(tnode_t *, bool, bool, bool, bool);
293void	check_expr_misc(const tnode_t *, bool, bool, bool, bool, bool, bool);
294bool	constant_addr(const tnode_t *, const sym_t **, ptrdiff_t *);
295strg_t	*cat_strings(strg_t *, strg_t *);
296unsigned int type_size_in_bits(const type_t *);
297sym_t	*find_member(const struct_or_union *, const char *);
298
299void begin_statement_expr(void);
300void do_statement_expr(tnode_t *);
301tnode_t *end_statement_expr(void);
302bool in_statement_expr(void);
303
304/*
305 * func.c
306 */
307extern	sym_t	*funcsym;
308extern	bool	reached;
309extern	bool	warn_about_unreachable;
310extern	bool	suppress_fallthrough;
311extern	int	nargusg;
312extern	pos_t	argsused_pos;
313extern	int	nvararg;
314extern	pos_t	vapos;
315extern	int	printflike_argnum;
316extern	pos_t	printflike_pos;
317extern	int	scanflike_argnum;
318extern	pos_t	scanflike_pos;
319extern	bool	suppress_constcond;
320extern	bool	llibflg;
321extern	int	lwarn;
322extern	bool	suppress_bitfieldtype;
323extern	bool	plibflg;
324extern	bool	suppress_longlong;
325
326void	begin_control_statement(control_statement_kind);
327void	end_control_statement(control_statement_kind);
328void	check_statement_reachable(void);
329void	begin_function(sym_t *);
330void	end_function(void);
331void	named_label(sym_t *);
332void	case_label(tnode_t *);
333void	default_label(void);
334void	stmt_if_expr(tnode_t *);
335void	stmt_if_then_stmt(void);
336void	stmt_if_else_stmt(bool);
337void	stmt_switch_expr(tnode_t *);
338void	stmt_switch_expr_stmt(void);
339void	stmt_while_expr(tnode_t *);
340void	stmt_while_expr_stmt(void);
341void	stmt_do(void);
342void	stmt_do_while_expr(tnode_t *);
343void	stmt_for_exprs(tnode_t *, tnode_t *, tnode_t *);
344void	stmt_for_exprs_stmt(void);
345void	stmt_goto(sym_t *);
346void	stmt_continue(void);
347void	stmt_break(void);
348void	stmt_return(bool, tnode_t *);
349void	global_clean_up_decl(bool);
350void	handle_lint_comment(lint_comment, int);
351
352/*
353 * init.c
354 */
355void	begin_initialization(sym_t *);
356void	end_initialization(void);
357sym_t	*current_initsym(void);
358
359void	init_rbrace(void);
360void	init_lbrace(void);
361void	init_expr(tnode_t *);
362void	begin_designation(void);
363void	add_designator_member(sbuf_t *);
364void	add_designator_subscript(range_t);
365
366/*
367 * emit.c
368 */
369void	outtype(const type_t *);
370void	outsym(const sym_t *, scl_t, def_t);
371void	outfdef(const sym_t *, const pos_t *, bool, bool, const sym_t *);
372void	outcall(const tnode_t *, bool, bool);
373void	outusg(const sym_t *);
374
375/*
376 * lex.c
377 */
378int	lex_name(const char *, size_t);
379int	lex_integer_constant(const char *, size_t, int);
380int	lex_floating_constant(const char *, size_t);
381int	lex_operator(int, op_t);
382int	lex_string(void);
383int	lex_wide_string(void);
384int	lex_character_constant(void);
385int	lex_wide_character_constant(void);
386void	lex_directive(const char *);
387void	lex_next_line(void);
388void	lex_comment(void);
389void	lex_slash_slash_comment(void);
390void	lex_unknown_character(int);
391int	lex_input(void);
392
393/*
394 * ckbool.c
395 */
396bool	typeok_scalar_strict_bool(op_t, const mod_t *, int,
397		    const tnode_t *, const tnode_t *);
398bool	fallback_symbol_strict_bool(sym_t *);
399
400/*
401 * ckctype.c
402 */
403void	check_ctype_function_call(const tnode_t *, const tnode_t *);
404void	check_ctype_macro_invocation(const tnode_t *, const tnode_t *);
405
406/*
407 * ckgetopt.c
408 */
409void	check_getopt_begin_while(const tnode_t *);
410void	check_getopt_begin_switch(void);
411void	check_getopt_case_label(int64_t);
412void	check_getopt_end_switch(void);
413void	check_getopt_end_while(void);
414