externs1.h revision 1.158
1/* $NetBSD: externs1.h,v 1.158 2022/04/30 20:24:57 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 */ 37extern int aflag; 38extern bool bflag; 39extern bool cflag; 40extern bool eflag; 41extern bool Fflag; 42extern bool hflag; 43extern bool pflag; 44extern bool rflag; 45extern bool uflag; 46extern bool vflag; 47extern bool yflag; 48extern bool wflag; 49extern bool zflag; 50extern bool Tflag; 51extern bool Pflag; 52 53extern bool allow_trad; 54extern bool allow_c90; 55extern bool allow_c99; 56extern bool allow_c11; 57extern bool allow_gcc; 58 59/* 60 * TODO: Replace the old flags with the new expressions, checking in each 61 * case whether the specific condition still makes sense. When lint was 62 * invented in 1995, it did not know about C99 mode, which makes all 63 * conditions involving tflag and sflag suspicious. 64 * 65 * In 1995, gflag meant "C90 plus GCC extensions". That definition needs to 66 * be extended to C99 and later as well to properly match "C99 + GCC" or "C11 67 * + GCC", in all calls to gnuism. 68 */ 69#define tflag (allow_trad && !allow_c90) 70#define sflag (!allow_trad && !allow_c99) 71 72extern void norecover(void); 73 74/* 75 * cgram.y 76 */ 77extern int block_level; 78extern size_t mem_block_level; 79extern int yydebug; 80 81extern int yyerror(const char *); 82extern int yyparse(void); 83 84/* 85 * scan.l 86 */ 87extern bool in_gcc_attribute; 88extern pos_t curr_pos; 89extern pos_t csrc_pos; 90extern bool in_system_header; 91extern symt_t symtyp; 92extern FILE *yyin; 93 94extern void initscan(void); 95extern int64_t convert_integer(int64_t, tspec_t, unsigned int); 96extern void clear_warn_flags(void); 97extern sym_t *getsym(sbuf_t *); 98extern void clean_up_after_error(void); 99extern sym_t *pushdown(const sym_t *); 100extern sym_t *mktempsym(type_t *); 101extern void rmsym(sym_t *); 102extern void rmsyms(sym_t *); 103extern void inssym(int, sym_t *); 104extern void freeyyv(void *, int); 105extern int yylex(void); 106 107/* 108 * mem1.c 109 */ 110extern const char *record_filename(const char *, size_t); 111extern int get_filename_id(const char *); 112extern void add_directory_replacement(char *); 113extern const char *transform_filename(const char *, size_t); 114 115extern void initmem(void); 116 117extern void *block_zero_alloc(size_t); 118extern void *level_zero_alloc(size_t, size_t); 119extern void level_free_all(size_t); 120 121extern void *expr_zero_alloc(size_t); 122extern tnode_t *expr_alloc_tnode(void); 123extern void expr_free_all(void); 124extern struct memory_block *expr_save_memory(void); 125extern void expr_restore_memory(struct memory_block *); 126 127/* 128 * debug.c 129 */ 130 131#ifdef DEBUG 132const char *declaration_kind_name(declaration_kind); 133const char *scl_name(scl_t); 134const char *symt_name(symt_t); 135const char *tqual_name(tqual_t); 136void debug_dinfo(const dinfo_t *); 137void debug_node(const tnode_t *); 138void debug_sym(const char *, const sym_t *, const char *); 139void debug_symtab(void); 140void debug_printf(const char *fmt, ...) __printflike(1, 2); 141void debug_print_indent(void); 142void debug_indent_inc(void); 143void debug_indent_dec(void); 144void debug_enter(const char *); 145void debug_step(const char *fmt, ...) __printflike(1, 2); 146void debug_leave(const char *); 147#define debug_enter() (debug_enter)(__func__) 148#define debug_leave() (debug_leave)(__func__) 149#else 150#define debug_noop() do { } while (false) 151#define debug_dinfo(d) debug_noop() 152#define debug_sym(p, sym, s) debug_noop() 153#define debug_symtab() debug_noop() 154#define debug_node(tn) debug_noop() 155#define debug_printf(...) debug_noop() 156#define debug_print_indent() debug_noop() 157#define debug_indent_inc() debug_noop() 158#define debug_indent_dec() debug_noop() 159#define debug_enter() debug_noop() 160#define debug_step(...) debug_noop() 161#define debug_leave() debug_noop() 162#endif 163 164/* 165 * err.c 166 */ 167extern int nerr; 168extern int sytxerr; 169extern const char *const msgs[]; 170 171extern void msglist(void); 172extern void error_at(int, const pos_t *, ...); 173extern void warning_at(int, const pos_t *, ...); 174extern void message_at(int, const pos_t *, ...); 175extern void error(int, ...); 176extern void warning(int, ...); 177extern bool gnuism(int, ...); 178extern void c99ism(int, ...); 179extern void c11ism(int, ...); 180extern void internal_error(const char *, int, const char *, ...) 181 __attribute__((__noreturn__,__format__(__printf__, 3, 4))); 182extern void assert_failed(const char *, int, const char *, const char *) 183 __attribute__((__noreturn__)); 184extern void update_location(const char *, int, bool, bool); 185 186/* 187 * decl.c 188 */ 189extern dinfo_t *dcs; 190extern const char *unnamed; 191extern int enumval; 192 193extern void initdecl(void); 194extern type_t *gettyp(tspec_t); 195extern type_t *block_dup_type(const type_t *); 196extern type_t *expr_dup_type(const type_t *); 197extern type_t *expr_unqualified_type(const type_t *); 198extern bool is_incomplete(const type_t *); 199extern void add_storage_class(scl_t); 200extern void add_type(type_t *); 201extern void add_qualifier(tqual_t); 202extern void addpacked(void); 203extern void add_attr_used(void); 204extern void begin_declaration_level(declaration_kind); 205extern void end_declaration_level(void); 206extern void setasm(void); 207extern void begin_type(void); 208extern void end_type(void); 209extern int length_in_bits(const type_t *, const char *); 210extern unsigned int alignment_in_bits(const type_t *); 211extern sym_t *lnklst(sym_t *, sym_t *); 212extern void check_type(sym_t *); 213extern sym_t *declarator_1_struct_union(sym_t *); 214extern sym_t *bitfield(sym_t *, int); 215extern qual_ptr *merge_qualified_pointer(qual_ptr *, qual_ptr *); 216extern sym_t *add_pointer(sym_t *, qual_ptr *); 217extern sym_t *add_array(sym_t *, bool, int); 218extern sym_t *add_function(sym_t *, sym_t *); 219extern void check_function_definition(sym_t *, bool); 220extern sym_t *declarator_name(sym_t *); 221extern sym_t *old_style_function_name(sym_t *); 222extern type_t *mktag(sym_t *, tspec_t, bool, bool); 223extern const char *storage_class_name(scl_t); 224extern type_t *complete_tag_struct_or_union(type_t *, sym_t *); 225extern type_t *complete_tag_enum(type_t *, sym_t *); 226extern sym_t *enumeration_constant(sym_t *, int, bool); 227extern void declare(sym_t *, bool, sbuf_t *); 228extern void copy_usage_info(sym_t *, sym_t *); 229extern bool check_redeclaration(sym_t *, bool *); 230extern bool eqptrtype(const type_t *, const type_t *, bool); 231extern bool eqtype(const type_t *, const type_t *, bool, bool, bool *); 232extern void complete_type(sym_t *, sym_t *); 233extern sym_t *declare_argument(sym_t *, bool); 234extern void check_func_lint_directives(void); 235extern void check_func_old_style_arguments(void); 236 237extern void declare_local(sym_t *, bool); 238extern sym_t *abstract_name(void); 239extern void global_clean_up(void); 240extern sym_t *declare_1_abstract(sym_t *); 241extern void check_size(sym_t *); 242extern void mark_as_set(sym_t *); 243extern void mark_as_used(sym_t *, bool, bool); 244extern void check_usage(dinfo_t *); 245extern void check_usage_sym(bool, sym_t *); 246extern void check_global_symbols(void); 247extern void print_previous_declaration(int, const sym_t *); 248extern int to_int_constant(tnode_t *, bool); 249 250/* 251 * tree.c 252 */ 253extern const tnode_t *before_conversion(const tnode_t *); 254extern type_t *block_derive_type(type_t *, tspec_t); 255extern type_t *expr_derive_type(type_t *, tspec_t); 256extern bool is_compiler_builtin(const char *); 257extern tnode_t *build_constant(type_t *, val_t *); 258extern tnode_t *build_name(sym_t *, bool); 259extern tnode_t *build_string(strg_t *); 260extern tnode_t *build_generic_selection(const tnode_t *, 261 struct generic_association *); 262 263extern tnode_t *build_binary(tnode_t *, op_t, bool, tnode_t *); 264extern tnode_t *build_unary(op_t, bool, tnode_t *); 265extern tnode_t *build_member_access(tnode_t *, op_t, bool, sbuf_t *); 266extern tnode_t *cconv(tnode_t *); 267extern bool is_typeok_bool_operand(const tnode_t *); 268extern bool typeok(op_t, int, const tnode_t *, const tnode_t *); 269extern tnode_t *promote(op_t, bool, tnode_t *); 270extern tnode_t *convert(op_t, int, type_t *, tnode_t *); 271extern void convert_constant(op_t, int, const type_t *, val_t *, val_t *); 272extern tnode_t *build_sizeof(const type_t *); 273extern tnode_t *build_offsetof(const type_t *, const sym_t *); 274extern tnode_t *build_alignof(const type_t *); 275extern tnode_t *cast(tnode_t *, type_t *); 276extern tnode_t *build_function_argument(tnode_t *, tnode_t *); 277extern tnode_t *build_function_call(tnode_t *, bool, tnode_t *); 278extern val_t *constant(tnode_t *, bool); 279extern void expr(tnode_t *, bool, bool, bool, bool); 280extern void check_expr_misc(const tnode_t *, bool, bool, bool, 281 bool, bool, bool); 282extern bool constant_addr(const tnode_t *, const sym_t **, ptrdiff_t *); 283extern strg_t *cat_strings(strg_t *, strg_t *); 284extern unsigned int type_size_in_bits(const type_t *); 285 286void begin_statement_expr(void); 287void do_statement_expr(tnode_t *); 288tnode_t *end_statement_expr(void); 289 290/* 291 * func.c 292 */ 293extern sym_t *funcsym; 294extern bool reached; 295extern bool warn_about_unreachable; 296extern bool seen_fallthrough; 297extern int nargusg; 298extern pos_t argsused_pos; 299extern int nvararg; 300extern pos_t vapos; 301extern int printflike_argnum; 302extern pos_t printflike_pos; 303extern int scanflike_argnum; 304extern pos_t scanflike_pos; 305extern bool constcond_flag; 306extern bool llibflg; 307extern int lwarn; 308extern bool bitfieldtype_ok; 309extern bool plibflg; 310extern bool quadflg; 311 312extern void begin_control_statement(control_statement_kind); 313extern void end_control_statement(control_statement_kind); 314extern void check_statement_reachable(void); 315extern void funcdef(sym_t *); 316extern void funcend(void); 317extern void named_label(sym_t *); 318extern void case_label(tnode_t *); 319extern void default_label(void); 320extern void if1(tnode_t *); 321extern void if2(void); 322extern void if3(bool); 323extern void switch1(tnode_t *); 324extern void switch2(void); 325extern void while1(tnode_t *); 326extern void while2(void); 327extern void do1(void); 328extern void do2(tnode_t *); 329extern void for1(tnode_t *, tnode_t *, tnode_t *); 330extern void for2(void); 331extern void do_goto(sym_t *); 332extern void do_continue(void); 333extern void do_break(void); 334extern void do_return(bool, tnode_t *); 335extern void global_clean_up_decl(bool); 336extern void argsused(int); 337extern void constcond(int); 338extern void fallthru(int); 339extern void not_reached(int); 340extern void lintlib(int); 341extern void linted(int); 342extern void varargs(int); 343extern void printflike(int); 344extern void scanflike(int); 345extern void protolib(int); 346extern void longlong(int); 347extern void bitfieldtype(int); 348 349/* 350 * init.c 351 */ 352extern void begin_initialization(sym_t *); 353extern void end_initialization(void); 354extern sym_t **current_initsym(void); 355 356extern void init_rbrace(void); 357extern void init_lbrace(void); 358extern void init_expr(tnode_t *); 359extern void begin_designation(void); 360extern void add_designator_member(sbuf_t *); 361extern void add_designator_subscript(range_t); 362 363/* 364 * emit.c 365 */ 366extern void outtype(const type_t *); 367extern void outsym(const sym_t *, scl_t, def_t); 368extern void outfdef(const sym_t *, const pos_t *, bool, bool, 369 const sym_t *); 370extern void outcall(const tnode_t *, bool, bool); 371extern void outusg(const sym_t *); 372 373/* 374 * lex.c 375 */ 376extern int lex_name(const char *, size_t); 377extern int lex_integer_constant(const char *, size_t, int); 378extern int lex_floating_constant(const char *, size_t); 379extern int lex_operator(int, op_t); 380extern int lex_string(void); 381extern int lex_wide_string(void); 382extern int lex_character_constant(void); 383extern int lex_wide_character_constant(void); 384extern void lex_directive(const char *); 385extern void lex_next_line(void); 386extern void lex_comment(void); 387extern void lex_slash_slash_comment(void); 388extern void lex_unknown_character(int); 389extern int lex_input(void); 390 391/* 392 * ckbool.c 393 */ 394extern bool typeok_scalar_strict_bool(op_t, const mod_t *, int, 395 const tnode_t *, const tnode_t *); 396extern bool fallback_symbol_strict_bool(sym_t *); 397 398/* 399 * ckctype.c 400 */ 401extern void check_ctype_function_call(const tnode_t *, const tnode_t *); 402extern void check_ctype_macro_invocation(const tnode_t *, const tnode_t *); 403 404/* 405 * ckgetopt.c 406 */ 407extern void check_getopt_begin_while(const tnode_t *); 408extern void check_getopt_begin_switch(void); 409extern void check_getopt_case_label(int64_t); 410extern void check_getopt_end_switch(void); 411extern void check_getopt_end_while(void); 412