2 * Copyright (C) 2008 Dan Carpenter.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
19 * smatch_extra.c is supposed to track the value of every variable.
31 #include "smatch_slist.h"
32 #include "smatch_extra.h"
36 struct string_list
*__ignored_macros
= NULL
;
37 static int in_warn_on_macro()
39 struct statement
*stmt
;
43 stmt
= get_current_statement();
46 macro
= get_macro_name(stmt
->pos
);
50 FOR_EACH_PTR(__ignored_macros
, tmp
) {
51 if (!strcmp(tmp
, macro
))
53 } END_FOR_EACH_PTR(tmp
);
57 typedef void (mod_hook
)(const char *name
, struct symbol
*sym
, struct smatch_state
*state
);
58 DECLARE_PTR_LIST(void_fn_list
, mod_hook
*);
59 static struct void_fn_list
*extra_mod_hooks
;
60 void add_extra_mod_hook(mod_hook
*fn
)
62 mod_hook
**p
= malloc(sizeof(mod_hook
*));
64 add_ptr_list(&extra_mod_hooks
, p
);
67 void call_extra_mod_hooks(const char *name
, struct symbol
*sym
, struct smatch_state
*state
)
71 FOR_EACH_PTR(extra_mod_hooks
, fn
) {
72 (*fn
)(name
, sym
, state
);
73 } END_FOR_EACH_PTR(fn
);
76 struct sm_state
*set_extra_mod(const char *name
, struct symbol
*sym
, struct smatch_state
*state
)
78 if (in_warn_on_macro())
80 remove_from_equiv(name
, sym
);
81 call_extra_mod_hooks(name
, sym
, state
);
82 return set_state(SMATCH_EXTRA
, name
, sym
, state
);
85 struct sm_state
*set_extra_expr_mod(struct expression
*expr
, struct smatch_state
*state
)
89 struct sm_state
*ret
= NULL
;
91 expr
= strip_expr(expr
);
92 name
= expr_to_var_sym(expr
, &sym
);
95 ret
= set_extra_mod(name
, sym
, state
);
101 void set_extra_nomod(const char *name
, struct symbol
*sym
, struct smatch_state
*state
)
103 struct relation
*rel
;
104 struct smatch_state
*orig_state
;
106 orig_state
= get_state(SMATCH_EXTRA
, name
, sym
);
108 if (!estate_related(orig_state
)) {
109 set_state(SMATCH_EXTRA
, name
, sym
, state
);
113 set_related(state
, estate_related(orig_state
));
114 FOR_EACH_PTR(estate_related(orig_state
), rel
) {
115 if (option_debug_related
)
116 sm_msg("updating related %s to %s", rel
->name
, state
->name
);
117 set_state(SMATCH_EXTRA
, rel
->name
, rel
->sym
, state
);
118 } END_FOR_EACH_PTR(rel
);
122 * This is for return_implies_state() hooks which modify a SMATCH_EXTRA state
124 void set_extra_expr_nomod(struct expression
*expr
, struct smatch_state
*state
)
129 name
= expr_to_var_sym(expr
, &sym
);
132 set_extra_nomod(name
, sym
, state
);
138 static void set_extra_true_false(const char *name
, struct symbol
*sym
,
139 struct smatch_state
*true_state
,
140 struct smatch_state
*false_state
)
142 struct relation
*rel
;
143 struct smatch_state
*orig_state
;
145 if (in_warn_on_macro())
148 orig_state
= get_state(SMATCH_EXTRA
, name
, sym
);
150 if (!estate_related(orig_state
)) {
151 set_true_false_states(SMATCH_EXTRA
, name
, sym
, true_state
, false_state
);
156 set_related(true_state
, estate_related(orig_state
));
158 set_related(false_state
, estate_related(orig_state
));
160 FOR_EACH_PTR(estate_related(orig_state
), rel
) {
161 set_true_false_states(SMATCH_EXTRA
, rel
->name
, rel
->sym
,
162 true_state
, false_state
);
163 } END_FOR_EACH_PTR(rel
);
166 static void set_extra_expr_true_false(struct expression
*expr
,
167 struct smatch_state
*true_state
,
168 struct smatch_state
*false_state
)
173 expr
= strip_expr(expr
);
174 name
= expr_to_var_sym(expr
, &sym
);
177 set_extra_true_false(name
, sym
, true_state
, false_state
);
182 static struct sm_state
*handle_canonical_while_count_down(struct statement
*loop
)
184 struct expression
*iter_var
;
185 struct expression
*condition
;
187 struct smatch_state
*estate
;
190 condition
= strip_expr(loop
->iterator_pre_condition
);
193 if (condition
->type
!= EXPR_PREOP
&& condition
->type
!= EXPR_POSTOP
)
195 if (condition
->op
!= SPECIAL_DECREMENT
)
198 iter_var
= condition
->unop
;
199 sm
= get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
202 if (sval_cmp_val(estate_min(sm
->state
), 0) < 0)
204 start
= estate_max(sm
->state
);
205 if (sval_cmp_val(start
, 0) <= 0)
207 if (!sval_is_max(start
))
210 if (condition
->type
== EXPR_PREOP
) {
211 estate
= alloc_estate_range(sval_type_val(start
.type
, 1), start
);
212 if (estate_has_hard_max(sm
->state
))
213 estate_set_hard_max(estate
);
214 estate_copy_fuzzy_max(estate
, sm
->state
);
215 set_extra_expr_mod(iter_var
, estate
);
217 if (condition
->type
== EXPR_POSTOP
) {
218 estate
= alloc_estate_range(sval_type_val(start
.type
, 0), start
);
219 if (estate_has_hard_max(sm
->state
))
220 estate_set_hard_max(estate
);
221 estate_copy_fuzzy_max(estate
, sm
->state
);
222 set_extra_expr_mod(iter_var
, estate
);
224 return get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
227 static struct sm_state
*handle_canonical_for_inc(struct expression
*iter_expr
,
228 struct expression
*condition
)
230 struct expression
*iter_var
;
232 struct smatch_state
*estate
;
233 sval_t start
, end
, max
;
235 iter_var
= iter_expr
->unop
;
236 sm
= get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
239 if (!estate_get_single_value(sm
->state
, &start
))
241 if (get_implied_max(condition
->right
, &end
))
242 end
= sval_cast(get_type(iter_var
), end
);
244 end
= sval_type_max(get_type(iter_var
));
246 if (get_sm_state_expr(SMATCH_EXTRA
, condition
->left
) != sm
)
249 switch (condition
->op
) {
250 case SPECIAL_UNSIGNED_LT
:
251 case SPECIAL_NOTEQUAL
:
253 if (!sval_is_min(end
))
256 case SPECIAL_UNSIGNED_LTE
:
262 if (sval_cmp(end
, start
) < 0)
264 estate
= alloc_estate_range(start
, end
);
265 if (get_hard_max(condition
->right
, &max
)) {
266 estate_set_hard_max(estate
);
267 if (condition
->op
== '<' ||
268 condition
->op
== SPECIAL_UNSIGNED_LT
||
269 condition
->op
== SPECIAL_NOTEQUAL
)
271 estate_set_fuzzy_max(estate
, max
);
273 set_extra_expr_mod(iter_var
, estate
);
274 return get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
277 static struct sm_state
*handle_canonical_for_dec(struct expression
*iter_expr
,
278 struct expression
*condition
)
280 struct expression
*iter_var
;
282 struct smatch_state
*estate
;
285 iter_var
= iter_expr
->unop
;
286 sm
= get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
289 if (!estate_get_single_value(sm
->state
, &start
))
291 if (!get_implied_min(condition
->right
, &end
))
292 end
= sval_type_min(get_type(iter_var
));
293 if (get_sm_state_expr(SMATCH_EXTRA
, condition
->left
) != sm
)
296 switch (condition
->op
) {
297 case SPECIAL_NOTEQUAL
:
299 if (!sval_is_min(end
) && !sval_is_max(end
))
307 if (sval_cmp(end
, start
) > 0)
309 estate
= alloc_estate_range(end
, start
);
310 estate_set_hard_max(estate
);
311 estate_set_fuzzy_max(estate
, estate_get_fuzzy_max(estate
));
312 set_extra_expr_mod(iter_var
, estate
);
313 return get_sm_state_expr(SMATCH_EXTRA
, iter_var
);
316 static struct sm_state
*handle_canonical_for_loops(struct statement
*loop
)
318 struct expression
*iter_expr
;
319 struct expression
*condition
;
321 if (!loop
->iterator_post_statement
)
323 if (loop
->iterator_post_statement
->type
!= STMT_EXPRESSION
)
325 iter_expr
= loop
->iterator_post_statement
->expression
;
326 if (!loop
->iterator_pre_condition
)
328 if (loop
->iterator_pre_condition
->type
!= EXPR_COMPARE
)
330 condition
= loop
->iterator_pre_condition
;
332 if (iter_expr
->op
== SPECIAL_INCREMENT
)
333 return handle_canonical_for_inc(iter_expr
, condition
);
334 if (iter_expr
->op
== SPECIAL_DECREMENT
)
335 return handle_canonical_for_dec(iter_expr
, condition
);
339 struct sm_state
*__extra_handle_canonical_loops(struct statement
*loop
, struct stree
**stree
)
341 struct sm_state
*ret
;
343 __push_fake_cur_stree();
344 if (!loop
->iterator_post_statement
)
345 ret
= handle_canonical_while_count_down(loop
);
347 ret
= handle_canonical_for_loops(loop
);
348 *stree
= __pop_fake_cur_stree();
352 int __iterator_unchanged(struct sm_state
*sm
)
356 if (get_sm_state(my_id
, sm
->name
, sm
->sym
) == sm
)
361 static void while_count_down_after(struct sm_state
*sm
, struct expression
*condition
)
365 /* paranoid checking. prolly not needed */
366 condition
= strip_expr(condition
);
369 if (condition
->type
!= EXPR_PREOP
&& condition
->type
!= EXPR_POSTOP
)
371 if (condition
->op
!= SPECIAL_DECREMENT
)
373 after_value
= estate_min(sm
->state
);
375 set_extra_mod(sm
->name
, sm
->sym
, alloc_estate_sval(after_value
));
378 void __extra_pre_loop_hook_after(struct sm_state
*sm
,
379 struct statement
*iterator
,
380 struct expression
*condition
)
382 struct expression
*iter_expr
;
384 struct smatch_state
*state
;
387 while_count_down_after(sm
, condition
);
391 iter_expr
= iterator
->expression
;
393 if (condition
->type
!= EXPR_COMPARE
)
395 if (iter_expr
->op
== SPECIAL_INCREMENT
) {
396 limit
= sval_binop(estate_max(sm
->state
), '+',
397 sval_type_val(estate_type(sm
->state
), 1));
399 limit
= sval_binop(estate_min(sm
->state
), '-',
400 sval_type_val(estate_type(sm
->state
), 1));
402 if (!estate_has_hard_max(sm
->state
) && !__has_breaks()) {
403 if (iter_expr
->op
== SPECIAL_INCREMENT
)
404 state
= alloc_estate_range(estate_min(sm
->state
), limit
);
406 state
= alloc_estate_range(limit
, estate_max(sm
->state
));
408 state
= alloc_estate_sval(limit
);
410 if (!estate_has_hard_max(sm
->state
)) {
411 estate_clear_hard_max(state
);
413 if (estate_has_fuzzy_max(sm
->state
)) {
414 sval_t hmax
= estate_get_fuzzy_max(sm
->state
);
415 sval_t max
= estate_max(sm
->state
);
417 if (sval_cmp(hmax
, max
) != 0)
418 estate_clear_fuzzy_max(state
);
419 } else if (!estate_has_fuzzy_max(sm
->state
)) {
420 estate_clear_fuzzy_max(state
);
423 set_extra_mod(sm
->name
, sm
->sym
, state
);
426 static struct stree
*unmatched_stree
;
427 static struct smatch_state
*unmatched_state(struct sm_state
*sm
)
429 struct smatch_state
*state
;
431 if (unmatched_stree
) {
432 state
= get_state_stree(unmatched_stree
, SMATCH_EXTRA
, sm
->name
, sm
->sym
);
436 return alloc_estate_whole(estate_type(sm
->state
));
439 static void clear_the_pointed_at(struct expression
*expr
)
444 struct sm_state
*tmp
;
446 name
= expr_to_var_sym(expr
, &sym
);
450 stree
= __get_cur_stree();
451 FOR_EACH_MY_SM(SMATCH_EXTRA
, stree
, tmp
) {
452 if (tmp
->name
[0] != '*')
456 if (strcmp(tmp
->name
+ 1, name
) != 0)
458 set_extra_mod(tmp
->name
, tmp
->sym
, alloc_estate_whole(estate_type(tmp
->state
)));
459 } END_FOR_EACH_SM(tmp
);
465 static void match_function_call(struct expression
*expr
)
467 struct expression
*arg
;
468 struct expression
*tmp
;
470 /* if we have the db this is handled in smatch_function_hooks.c */
473 if (inlinable(expr
->fn
))
476 FOR_EACH_PTR(expr
->args
, arg
) {
477 tmp
= strip_expr(arg
);
478 if (tmp
->type
== EXPR_PREOP
&& tmp
->op
== '&')
479 set_extra_expr_mod(tmp
->unop
, alloc_estate_whole(get_type(tmp
->unop
)));
481 clear_the_pointed_at(tmp
);
482 } END_FOR_EACH_PTR(arg
);
485 static int types_equiv_or_pointer(struct symbol
*one
, struct symbol
*two
)
489 if (one
->type
== SYM_PTR
&& two
->type
== SYM_PTR
)
491 return types_equiv(one
, two
);
494 static void match_vanilla_assign(struct expression
*left
, struct expression
*right
)
496 struct range_list
*rl
= NULL
;
497 struct symbol
*right_sym
;
498 struct symbol
*left_type
;
499 struct symbol
*right_type
;
500 char *right_name
= NULL
;
504 struct smatch_state
*state
;
509 name
= expr_to_var_sym(left
, &sym
);
513 left_type
= get_type(left
);
514 right_type
= get_type(right
);
516 right_name
= expr_to_var_sym(right
, &right_sym
);
518 if (!(right
->type
== EXPR_PREOP
&& right
->op
== '&') &&
519 right_name
&& right_sym
&&
520 types_equiv_or_pointer(left_type
, right_type
) &&
521 !has_symbol(right
, sym
)) {
522 set_equiv(left
, right
);
526 if (get_implied_rl(right
, &rl
)) {
527 rl
= cast_rl(left_type
, rl
);
528 state
= alloc_estate_rl(rl
);
529 if (get_hard_max(right
, &max
)) {
530 estate_set_hard_max(state
);
531 estate_set_fuzzy_max(state
, max
);
534 rl
= alloc_whole_rl(right_type
);
535 rl
= cast_rl(left_type
, rl
);
536 state
= alloc_estate_rl(rl
);
538 set_extra_mod(name
, sym
, state
);
540 free_string(right_name
);
543 static int op_remove_assign(int op
)
546 case SPECIAL_ADD_ASSIGN
:
548 case SPECIAL_SUB_ASSIGN
:
550 case SPECIAL_MUL_ASSIGN
:
552 case SPECIAL_DIV_ASSIGN
:
554 case SPECIAL_MOD_ASSIGN
:
556 case SPECIAL_AND_ASSIGN
:
558 case SPECIAL_OR_ASSIGN
:
560 case SPECIAL_XOR_ASSIGN
:
562 case SPECIAL_SHL_ASSIGN
:
563 return SPECIAL_LEFTSHIFT
;
564 case SPECIAL_SHR_ASSIGN
:
565 return SPECIAL_RIGHTSHIFT
;
571 static void match_assign(struct expression
*expr
)
573 struct range_list
*rl
= NULL
;
574 struct expression
*left
;
575 struct expression
*right
;
576 struct expression
*binop_expr
;
577 struct symbol
*left_type
;
578 struct symbol
*right_type
;
581 sval_t left_min
, left_max
;
582 sval_t right_min
, right_max
;
583 sval_t res_min
, res_max
;
585 left
= strip_expr(expr
->left
);
587 right
= strip_expr(expr
->right
);
588 while (right
->type
== EXPR_ASSIGNMENT
&& right
->op
== '=')
589 right
= strip_expr(right
->left
);
591 if (is_condition(expr
->right
))
592 return; /* handled in smatch_condition.c */
593 if (expr
->op
== '=' && right
->type
== EXPR_CALL
)
594 return; /* handled in smatch_function_hooks.c */
595 if (expr
->op
== '=') {
596 match_vanilla_assign(left
, right
);
600 name
= expr_to_var_sym(left
, &sym
);
604 left_type
= get_type(left
);
605 right_type
= get_type(right
);
607 res_min
= sval_type_min(left_type
);
608 res_max
= sval_type_max(left_type
);
611 case SPECIAL_ADD_ASSIGN
:
612 get_absolute_max(left
, &left_max
);
613 get_absolute_max(right
, &right_max
);
614 if (sval_binop_overflows(left_max
, '+', right_max
))
616 if (get_implied_min(left
, &left_min
) &&
617 !sval_is_negative_min(left_min
) &&
618 get_implied_min(right
, &right_min
) &&
619 !sval_is_negative_min(right_min
)) {
620 res_min
= sval_binop(left_min
, '+', right_min
);
621 res_min
= sval_cast(right_type
, res_min
);
623 if (inside_loop()) /* we are assuming loops don't lead to wrapping */
625 res_max
= sval_binop(left_max
, '+', right_max
);
626 res_max
= sval_cast(right_type
, res_max
);
628 case SPECIAL_SUB_ASSIGN
:
629 if (get_implied_max(left
, &left_max
) &&
630 !sval_is_max(left_max
) &&
631 get_implied_min(right
, &right_min
) &&
632 !sval_is_min(right_min
)) {
633 res_max
= sval_binop(left_max
, '-', right_min
);
634 res_max
= sval_cast(right_type
, res_max
);
638 if (get_implied_min(left
, &left_min
) &&
639 !sval_is_min(left_min
) &&
640 get_implied_max(right
, &right_max
) &&
641 !sval_is_max(right_max
)) {
642 res_min
= sval_binop(left_min
, '-', right_max
);
643 res_min
= sval_cast(right_type
, res_min
);
646 case SPECIAL_AND_ASSIGN
:
647 case SPECIAL_MOD_ASSIGN
:
648 case SPECIAL_SHL_ASSIGN
:
649 case SPECIAL_SHR_ASSIGN
:
650 case SPECIAL_OR_ASSIGN
:
651 case SPECIAL_XOR_ASSIGN
:
652 case SPECIAL_MUL_ASSIGN
:
653 case SPECIAL_DIV_ASSIGN
:
654 binop_expr
= binop_expression(expr
->left
,
655 op_remove_assign(expr
->op
),
657 if (get_absolute_rl(binop_expr
, &rl
)) {
658 rl
= cast_rl(left_type
, rl
);
659 set_extra_mod(name
, sym
, alloc_estate_rl(rl
));
664 rl
= cast_rl(left_type
, alloc_rl(res_min
, res_max
));
665 set_extra_mod(name
, sym
, alloc_estate_rl(rl
));
670 static struct smatch_state
*increment_state(struct smatch_state
*state
)
672 sval_t min
= estate_min(state
);
673 sval_t max
= estate_max(state
);
675 if (!estate_rl(state
))
679 max
= sval_type_max(max
.type
);
681 if (!sval_is_min(min
) && !sval_is_max(min
))
683 if (!sval_is_min(max
) && !sval_is_max(max
))
685 return alloc_estate_range(min
, max
);
688 static struct smatch_state
*decrement_state(struct smatch_state
*state
)
690 sval_t min
= estate_min(state
);
691 sval_t max
= estate_max(state
);
693 if (!estate_rl(state
))
697 min
= sval_type_min(min
.type
);
699 if (!sval_is_min(min
) && !sval_is_max(min
))
701 if (!sval_is_min(max
) && !sval_is_max(max
))
703 return alloc_estate_range(min
, max
);
706 static void unop_expr(struct expression
*expr
)
708 struct smatch_state
*state
;
710 if (expr
->smatch_flags
& Handled
)
714 case SPECIAL_INCREMENT
:
715 state
= get_state_expr(SMATCH_EXTRA
, expr
->unop
);
716 state
= increment_state(state
);
718 state
= alloc_estate_whole(get_type(expr
));
719 set_extra_expr_mod(expr
->unop
, state
);
721 case SPECIAL_DECREMENT
:
722 state
= get_state_expr(SMATCH_EXTRA
, expr
->unop
);
723 state
= decrement_state(state
);
725 state
= alloc_estate_whole(get_type(expr
));
726 set_extra_expr_mod(expr
->unop
, state
);
733 static void asm_expr(struct statement
*stmt
)
736 struct expression
*expr
;
740 FOR_EACH_PTR(stmt
->asm_outputs
, expr
) {
742 case 0: /* identifier */
743 case 1: /* constraint */
746 case 2: /* expression */
748 type
= get_type(strip_expr(expr
));
749 set_extra_expr_mod(expr
, alloc_estate_whole(type
));
752 } END_FOR_EACH_PTR(expr
);
755 static void delete_state_tracker(struct tracker
*t
)
757 remove_from_equiv(t
->name
, t
->sym
);
758 delete_state(t
->owner
, t
->name
, t
->sym
);
761 static void scoped_state_extra(const char *name
, struct symbol
*sym
)
765 t
= alloc_tracker(SMATCH_EXTRA
, name
, sym
);
766 add_scope_hook((scope_hook
*)&delete_state_tracker
, t
);
769 static void match_declarations(struct symbol
*sym
)
774 name
= sym
->ident
->name
;
775 if (!sym
->initializer
) {
776 set_state(SMATCH_EXTRA
, name
, sym
, alloc_estate_whole(get_real_base_type(sym
)));
777 scoped_state_extra(name
, sym
);
782 static void check_dereference(struct expression
*expr
)
784 if (outside_of_function())
786 set_extra_expr_nomod(expr
, alloc_estate_range(valid_ptr_min_sval
, valid_ptr_max_sval
));
789 static void match_dereferences(struct expression
*expr
)
791 if (expr
->type
!= EXPR_PREOP
)
793 check_dereference(expr
->unop
);
796 static void match_pointer_as_array(struct expression
*expr
)
800 check_dereference(expr
->unop
->left
);
803 static void set_param_dereferenced(struct expression
*arg
, char *key
, char *unused
)
808 name
= get_variable_from_key(arg
, key
, &sym
);
812 set_extra_nomod(name
, sym
, alloc_estate_range(valid_ptr_min_sval
, valid_ptr_max_sval
));
818 static void match_function_def(struct symbol
*sym
)
822 FOR_EACH_PTR(sym
->ctype
.base_type
->arguments
, arg
) {
825 set_state(my_id
, arg
->ident
->name
, arg
, alloc_estate_whole(get_real_base_type(arg
)));
826 } END_FOR_EACH_PTR(arg
);
829 static sval_t
add_one(sval_t sval
)
835 static sval_t
sub_one(sval_t sval
)
841 static void handle_comparison(struct symbol
*type
, struct expression
*left
, int op
, struct expression
*right
)
843 struct range_list
*left_orig
;
844 struct range_list
*left_true
;
845 struct range_list
*left_false
;
846 struct range_list
*right_orig
;
847 struct range_list
*right_true
;
848 struct range_list
*right_false
;
849 struct smatch_state
*left_true_state
;
850 struct smatch_state
*left_false_state
;
851 struct smatch_state
*right_true_state
;
852 struct smatch_state
*right_false_state
;
853 sval_t min
, max
, dummy
, hard_max
;
855 int right_postop
= 0;
857 if (left
->op
== SPECIAL_INCREMENT
|| left
->op
== SPECIAL_DECREMENT
) {
858 if (left
->type
== EXPR_POSTOP
) {
859 left
->smatch_flags
|= Handled
;
860 left_postop
= left
->op
;
862 left
= strip_expr(left
->unop
);
864 while (left
->type
== EXPR_ASSIGNMENT
)
865 left
= strip_expr(left
->left
);
867 if (right
->op
== SPECIAL_INCREMENT
|| right
->op
== SPECIAL_DECREMENT
) {
868 if (right
->type
== EXPR_POSTOP
) {
869 right
->smatch_flags
|= Handled
;
870 right_postop
= right
->op
;
872 right
= strip_expr(right
->unop
);
875 if (get_implied_rl(left
, &left_orig
)) {
876 left_orig
= cast_rl(type
, left_orig
);
878 min
= sval_type_min(get_type(left
));
879 max
= sval_type_max(get_type(left
));
880 left_orig
= cast_rl(type
, alloc_rl(min
, max
));
883 if (get_implied_rl(right
, &right_orig
)) {
884 right_orig
= cast_rl(type
, right_orig
);
886 min
= sval_type_min(get_type(right
));
887 max
= sval_type_max(get_type(right
));
888 right_orig
= cast_rl(type
, alloc_rl(min
, max
));
890 min
= sval_type_min(type
);
891 max
= sval_type_max(type
);
893 left_true
= clone_rl(left_orig
);
894 left_false
= clone_rl(left_orig
);
895 right_true
= clone_rl(right_orig
);
896 right_false
= clone_rl(right_orig
);
900 case SPECIAL_UNSIGNED_LT
:
901 left_true
= remove_range(left_orig
, rl_max(right_orig
), max
);
902 if (!sval_is_min(rl_min(right_orig
))) {
903 left_false
= remove_range(left_orig
, min
, sub_one(rl_min(right_orig
)));
906 right_true
= remove_range(right_orig
, min
, rl_min(left_orig
));
907 if (!sval_is_max(rl_max(left_orig
)))
908 right_false
= remove_range(right_orig
, add_one(rl_max(left_orig
)), max
);
910 case SPECIAL_UNSIGNED_LTE
:
912 if (!sval_is_max(rl_max(right_orig
)))
913 left_true
= remove_range(left_orig
, add_one(rl_max(right_orig
)), max
);
914 left_false
= remove_range(left_orig
, min
, rl_min(right_orig
));
916 if (!sval_is_min(rl_min(left_orig
)))
917 right_true
= remove_range(right_orig
, min
, sub_one(rl_min(left_orig
)));
918 right_false
= remove_range(right_orig
, rl_max(left_orig
), max
);
920 if (sval_cmp(rl_min(left_orig
), rl_min(right_orig
)) == 0)
921 left_false
= remove_range(left_false
, rl_min(left_orig
), rl_min(left_orig
));
922 if (sval_cmp(rl_max(left_orig
), rl_max(right_orig
)) == 0)
923 right_false
= remove_range(right_false
, rl_max(left_orig
), rl_max(left_orig
));
926 if (!sval_is_max(rl_max(right_orig
))) {
927 left_true
= remove_range(left_true
, add_one(rl_max(right_orig
)), max
);
929 if (!sval_is_min(rl_min(right_orig
))) {
930 left_true
= remove_range(left_true
, min
, sub_one(rl_min(right_orig
)));
932 if (sval_cmp(rl_min(right_orig
), rl_max(right_orig
)) == 0)
933 left_false
= remove_range(left_orig
, rl_min(right_orig
), rl_min(right_orig
));
935 if (!sval_is_max(rl_max(left_orig
)))
936 right_true
= remove_range(right_true
, add_one(rl_max(left_orig
)), max
);
937 if (!sval_is_min(rl_min(left_orig
)))
938 right_true
= remove_range(right_true
, min
, sub_one(rl_min(left_orig
)));
939 if (sval_cmp(rl_min(left_orig
), rl_max(left_orig
)) == 0)
940 right_false
= remove_range(right_orig
, rl_min(left_orig
), rl_min(left_orig
));
942 case SPECIAL_UNSIGNED_GTE
:
944 if (!sval_is_min(rl_min(right_orig
)))
945 left_true
= remove_range(left_orig
, min
, sub_one(rl_min(right_orig
)));
946 left_false
= remove_range(left_orig
, rl_max(right_orig
), max
);
948 if (!sval_is_max(rl_max(left_orig
)))
949 right_true
= remove_range(right_orig
, add_one(rl_max(left_orig
)), max
);
950 right_false
= remove_range(right_orig
, min
, rl_min(left_orig
));
952 if (sval_cmp(rl_min(left_orig
), rl_min(right_orig
)) == 0)
953 right_false
= remove_range(right_false
, rl_min(left_orig
), rl_min(left_orig
));
954 if (sval_cmp(rl_max(left_orig
), rl_max(right_orig
)) == 0)
955 left_false
= remove_range(left_false
, rl_max(left_orig
), rl_max(left_orig
));
958 case SPECIAL_UNSIGNED_GT
:
959 left_true
= remove_range(left_orig
, min
, rl_min(right_orig
));
960 if (!sval_is_max(rl_max(right_orig
)))
961 left_false
= remove_range(left_orig
, add_one(rl_max(right_orig
)), max
);
963 right_true
= remove_range(right_orig
, rl_max(left_orig
), max
);
964 if (!sval_is_min(rl_min(left_orig
)))
965 right_false
= remove_range(right_orig
, min
, sub_one(rl_min(left_orig
)));
967 case SPECIAL_NOTEQUAL
:
968 if (!sval_is_max(rl_max(right_orig
)))
969 left_false
= remove_range(left_false
, add_one(rl_max(right_orig
)), max
);
970 if (!sval_is_min(rl_min(right_orig
)))
971 left_false
= remove_range(left_false
, min
, sub_one(rl_min(right_orig
)));
972 if (sval_cmp(rl_min(right_orig
), rl_max(right_orig
)) == 0)
973 left_true
= remove_range(left_orig
, rl_min(right_orig
), rl_min(right_orig
));
975 if (!sval_is_max(rl_max(left_orig
)))
976 right_false
= remove_range(right_false
, add_one(rl_max(left_orig
)), max
);
977 if (!sval_is_min(rl_min(left_orig
)))
978 right_false
= remove_range(right_false
, min
, sub_one(rl_min(left_orig
)));
979 if (sval_cmp(rl_min(left_orig
), rl_max(left_orig
)) == 0)
980 right_true
= remove_range(right_orig
, rl_min(left_orig
), rl_min(left_orig
));
986 left_true
= rl_truncate_cast(get_type(left
), left_true
);
987 left_false
= rl_truncate_cast(get_type(left
), left_false
);
988 right_true
= rl_truncate_cast(get_type(right
), right_true
);
989 right_false
= rl_truncate_cast(get_type(right
), right_false
);
991 left_true_state
= alloc_estate_rl(left_true
);
992 left_false_state
= alloc_estate_rl(left_false
);
993 right_true_state
= alloc_estate_rl(right_true
);
994 right_false_state
= alloc_estate_rl(right_false
);
998 case SPECIAL_UNSIGNED_LT
:
999 case SPECIAL_UNSIGNED_LTE
:
1001 if (get_hard_max(right
, &dummy
))
1002 estate_set_hard_max(left_true_state
);
1003 if (get_hard_max(left
, &dummy
))
1004 estate_set_hard_max(right_false_state
);
1007 case SPECIAL_UNSIGNED_GT
:
1008 case SPECIAL_UNSIGNED_GTE
:
1010 if (get_hard_max(left
, &dummy
))
1011 estate_set_hard_max(right_true_state
);
1012 if (get_hard_max(right
, &dummy
))
1013 estate_set_hard_max(left_false_state
);
1019 case SPECIAL_UNSIGNED_LT
:
1020 case SPECIAL_UNSIGNED_LTE
:
1022 if (get_hard_max(right
, &hard_max
)) {
1023 if (op
== '<' || op
== SPECIAL_UNSIGNED_LT
)
1025 estate_set_fuzzy_max(left_true_state
, hard_max
);
1027 if (get_implied_value(right
, &hard_max
)) {
1028 if (op
== SPECIAL_UNSIGNED_LTE
||
1031 estate_set_fuzzy_max(left_false_state
, hard_max
);
1033 if (get_hard_max(left
, &hard_max
)) {
1034 if (op
== SPECIAL_UNSIGNED_LTE
||
1037 estate_set_fuzzy_max(right_false_state
, hard_max
);
1039 if (get_implied_value(left
, &hard_max
)) {
1040 if (op
== '<' || op
== SPECIAL_UNSIGNED_LT
)
1042 estate_set_fuzzy_max(right_true_state
, hard_max
);
1046 case SPECIAL_UNSIGNED_GT
:
1047 case SPECIAL_UNSIGNED_GTE
:
1049 if (get_hard_max(left
, &hard_max
)) {
1050 if (op
== '>' || op
== SPECIAL_UNSIGNED_GT
)
1052 estate_set_fuzzy_max(right_true_state
, hard_max
);
1054 if (get_implied_value(left
, &hard_max
)) {
1055 if (op
== SPECIAL_UNSIGNED_GTE
||
1058 estate_set_fuzzy_max(right_false_state
, hard_max
);
1060 if (get_hard_max(right
, &hard_max
)) {
1061 if (op
== SPECIAL_UNSIGNED_LTE
||
1064 estate_set_fuzzy_max(left_false_state
, hard_max
);
1066 if (get_implied_value(right
, &hard_max
)) {
1068 op
== SPECIAL_UNSIGNED_GT
)
1070 estate_set_fuzzy_max(left_true_state
, hard_max
);
1074 if (get_hard_max(left
, &hard_max
))
1075 estate_set_fuzzy_max(right_true_state
, hard_max
);
1076 if (get_hard_max(right
, &hard_max
))
1077 estate_set_fuzzy_max(left_true_state
, hard_max
);
1081 if (get_hard_max(left
, &hard_max
)) {
1082 estate_set_hard_max(left_true_state
);
1083 estate_set_hard_max(left_false_state
);
1085 if (get_hard_max(right
, &hard_max
)) {
1086 estate_set_hard_max(right_true_state
);
1087 estate_set_hard_max(right_false_state
);
1090 if (left_postop
== SPECIAL_INCREMENT
) {
1091 left_true_state
= increment_state(left_true_state
);
1092 left_false_state
= increment_state(left_false_state
);
1094 if (left_postop
== SPECIAL_DECREMENT
) {
1095 left_true_state
= decrement_state(left_true_state
);
1096 left_false_state
= decrement_state(left_false_state
);
1098 if (right_postop
== SPECIAL_INCREMENT
) {
1099 right_true_state
= increment_state(right_true_state
);
1100 right_false_state
= increment_state(right_false_state
);
1102 if (right_postop
== SPECIAL_DECREMENT
) {
1103 right_true_state
= decrement_state(right_true_state
);
1104 right_false_state
= decrement_state(right_false_state
);
1107 set_extra_expr_true_false(left
, left_true_state
, left_false_state
);
1108 set_extra_expr_true_false(right
, right_true_state
, right_false_state
);
1111 static int opposite_op(int op
)
1122 static int is_simple_math(struct expression
*expr
)
1126 if (expr
->type
!= EXPR_BINOP
)
1128 if (!opposite_op(expr
->op
))
1133 static void move_known_values(struct expression
**left_p
, struct expression
**right_p
)
1135 struct expression
*left
= *left_p
;
1136 struct expression
*right
= *right_p
;
1139 if (get_implied_value(left
, &sval
)) {
1140 if (!is_simple_math(right
))
1142 if (right
->op
== '+' && get_value(right
->left
, &sval
)) {
1143 *left_p
= binop_expression(left
, opposite_op(right
->op
), right
->left
);
1144 *right_p
= right
->right
;
1147 if (get_value(right
->right
, &sval
)) {
1148 *left_p
= binop_expression(left
, opposite_op(right
->op
), right
->right
);
1149 *right_p
= right
->left
;
1154 if (get_implied_value(right
, &sval
)) {
1155 if (!is_simple_math(left
))
1157 if (left
->op
== '+' && get_value(left
->left
, &sval
)) {
1158 *right_p
= binop_expression(right
, opposite_op(left
->op
), left
->left
);
1159 *left_p
= left
->right
;
1163 if (get_value(left
->right
, &sval
)) {
1164 *right_p
= binop_expression(right
, opposite_op(left
->op
), left
->right
);
1165 *left_p
= left
->left
;
1172 static int match_func_comparison(struct expression
*expr
)
1174 struct expression
*left
= strip_expr(expr
->left
);
1175 struct expression
*right
= strip_expr(expr
->right
);
1179 * fixme: think about this harder. We should always be trying to limit
1180 * the non-call side as well. If we can't determine the limitter does
1181 * that mean we aren't querying the database and are missing important
1185 if (left
->type
== EXPR_CALL
) {
1186 if (get_implied_value(left
, &sval
)) {
1187 handle_comparison(get_type(expr
), left
, expr
->op
, right
);
1190 if (!get_implied_value(right
, &sval
))
1192 function_comparison(expr
->op
, left
, sval
, 1);
1196 if (right
->type
== EXPR_CALL
) {
1197 if (get_implied_value(right
, &sval
)) {
1198 handle_comparison(get_type(expr
), left
, expr
->op
, right
);
1201 if (!get_implied_value(left
, &sval
))
1203 function_comparison(expr
->op
, right
, sval
, 0);
1210 static void match_comparison(struct expression
*expr
)
1212 struct expression
*left_orig
= strip_expr(expr
->left
);
1213 struct expression
*right_orig
= strip_expr(expr
->right
);
1214 struct expression
*left
, *right
;
1215 struct expression
*prev
;
1216 struct symbol
*type
;
1218 if (match_func_comparison(expr
))
1221 type
= get_type(expr
);
1223 type
= &llong_ctype
;
1227 move_known_values(&left
, &right
);
1228 handle_comparison(type
, left
, expr
->op
, right
);
1230 prev
= get_assigned_expr(left_orig
);
1231 if (is_simple_math(prev
) && has_variable(prev
, left_orig
) == 0) {
1234 move_known_values(&left
, &right
);
1235 handle_comparison(type
, left
, expr
->op
, right
);
1238 prev
= get_assigned_expr(right_orig
);
1239 if (is_simple_math(prev
) && has_variable(prev
, right_orig
) == 0) {
1242 move_known_values(&left
, &right
);
1243 handle_comparison(type
, left
, expr
->op
, right
);
1247 static void handle_AND_condition(struct expression
*expr
)
1249 struct range_list
*rl
= NULL
;
1252 if (get_implied_value(expr
->left
, &known
) && known
.value
> 0) {
1254 get_absolute_rl(expr
->right
, &rl
);
1255 rl
= remove_range(rl
, sval_type_val(known
.type
, 0), known
);
1256 set_extra_expr_true_false(expr
->right
, alloc_estate_rl(rl
), NULL
);
1260 if (get_implied_value(expr
->right
, &known
) && known
.value
> 0) {
1262 get_absolute_rl(expr
->left
, &rl
);
1263 rl
= remove_range(rl
, sval_type_val(known
.type
, 0), known
);
1264 set_extra_expr_true_false(expr
->left
, alloc_estate_rl(rl
), NULL
);
1269 /* this is actually hooked from smatch_implied.c... it's hacky, yes */
1270 void __extra_match_condition(struct expression
*expr
)
1274 struct smatch_state
*pre_state
;
1275 struct smatch_state
*true_state
;
1276 struct smatch_state
*false_state
;
1278 expr
= strip_expr(expr
);
1279 switch (expr
->type
) {
1281 function_comparison(SPECIAL_NOTEQUAL
, expr
, ll_to_sval(0), 1);
1288 zero
= sval_blank(expr
);
1291 name
= expr_to_var_sym(expr
, &sym
);
1294 pre_state
= get_state(my_id
, name
, sym
);
1295 true_state
= estate_filter_sval(pre_state
, zero
);
1296 if (possibly_true(expr
, SPECIAL_EQUAL
, zero_expr()))
1297 false_state
= alloc_estate_sval(zero
);
1299 false_state
= alloc_estate_empty();
1300 set_extra_true_false(name
, sym
, true_state
, false_state
);
1305 match_comparison(expr
);
1307 case EXPR_ASSIGNMENT
:
1308 __extra_match_condition(expr
->left
);
1311 if (expr
->op
== '&')
1312 handle_AND_condition(expr
);
1317 static void assume_indexes_are_valid(struct expression
*expr
)
1319 struct expression
*array_expr
;
1321 struct expression
*offset
;
1322 struct symbol
*offset_type
;
1323 struct range_list
*rl_before
;
1324 struct range_list
*rl_after
;
1325 struct range_list
*filter
= NULL
;
1328 expr
= strip_expr(expr
);
1329 if (!is_array(expr
))
1332 offset
= get_array_offset(expr
);
1333 offset_type
= get_type(offset
);
1334 if (offset_type
&& type_signed(offset_type
)) {
1335 filter
= alloc_rl(sval_type_min(offset_type
),
1336 sval_type_val(offset_type
, -1));
1339 array_expr
= strip_parens(expr
->unop
->left
);
1340 array_size
= get_real_array_size(array_expr
);
1341 if (array_size
> 1) {
1342 size
= sval_type_val(offset_type
, array_size
);
1343 add_range(&filter
, size
, sval_type_max(offset_type
));
1348 get_absolute_rl(offset
, &rl_before
);
1349 rl_after
= rl_filter(rl_before
, filter
);
1350 if (rl_equiv(rl_before
, rl_after
))
1352 set_extra_expr_nomod(offset
, alloc_estate_rl(rl_after
));
1355 /* returns 1 if it is not possible for expr to be value, otherwise returns 0 */
1356 int implied_not_equal(struct expression
*expr
, long long val
)
1358 return !possibly_false(expr
, SPECIAL_NOTEQUAL
, value_expr(val
));
1361 int implied_not_equal_name_sym(char *name
, struct symbol
*sym
, long long val
)
1363 struct smatch_state
*estate
;
1365 estate
= get_state(SMATCH_EXTRA
, name
, sym
);
1368 if (!rl_has_sval(estate_rl(estate
), sval_type_val(estate_type(estate
), 0)))
1373 static void struct_member_callback(struct expression
*call
, int param
, char *printed_name
, struct smatch_state
*state
)
1375 if (estate_is_whole(state
))
1377 sql_insert_caller_info(call
, PARAM_VALUE
, param
, printed_name
, state
->name
);
1378 if (estate_has_fuzzy_max(state
))
1379 sql_insert_caller_info(call
, FUZZY_MAX
, param
, printed_name
,
1380 sval_to_str(estate_get_fuzzy_max(state
)));
1383 static void db_limited_before(void)
1385 unmatched_stree
= clone_stree(__get_cur_stree());
1388 static void db_limited_after(void)
1390 free_stree(&unmatched_stree
);
1393 static void db_param_limit_filter(struct expression
*expr
, int param
, char *key
, char *value
, int mod
)
1395 struct expression
*arg
;
1398 struct sm_state
*sm
;
1399 struct symbol
*type
;
1400 struct range_list
*rl
;
1401 struct range_list
*limit
;
1402 struct range_list
*new;
1404 while (expr
->type
== EXPR_ASSIGNMENT
)
1405 expr
= strip_expr(expr
->right
);
1406 if (expr
->type
!= EXPR_CALL
)
1409 arg
= get_argument_from_call_expr(expr
->args
, param
);
1413 name
= get_variable_from_key(arg
, key
, &sym
);
1417 sm
= get_sm_state(SMATCH_EXTRA
, name
, sym
);
1418 type
= get_member_type_from_key(arg
, key
);
1420 rl
= estate_rl(sm
->state
);
1422 rl
= alloc_whole_rl(type
);
1424 call_results_to_rl(expr
, type
, value
, &limit
);
1425 new = rl_intersection(rl
, limit
);
1427 /* We want to preserve the implications here */
1428 if (sm
&& rl_equiv(estate_rl(sm
->state
), new)) {
1432 set_extra_mod(name
, sym
, alloc_estate_rl(new));
1434 set_extra_nomod(name
, sym
, alloc_estate_rl(new));
1441 static void db_param_limit(struct expression
*expr
, int param
, char *key
, char *value
)
1443 db_param_limit_filter(expr
, param
, key
, value
, 0);
1446 static void db_param_filter(struct expression
*expr
, int param
, char *key
, char *value
)
1448 db_param_limit_filter(expr
, param
, key
, value
, 1);
1451 static void db_param_add(struct expression
*expr
, int param
, char *key
, char *value
)
1453 struct expression
*arg
;
1456 struct symbol
*type
;
1457 struct smatch_state
*state
;
1458 struct range_list
*added
= NULL
;
1459 struct range_list
*new;
1461 while (expr
->type
== EXPR_ASSIGNMENT
)
1462 expr
= strip_expr(expr
->right
);
1463 if (expr
->type
!= EXPR_CALL
)
1466 arg
= get_argument_from_call_expr(expr
->args
, param
);
1469 name
= get_variable_from_key(arg
, key
, &sym
);
1473 type
= get_member_type_from_key(arg
, key
);
1474 state
= get_state(SMATCH_EXTRA
, name
, sym
);
1476 call_results_to_rl(expr
, type
, value
, &added
);
1477 new = rl_union(estate_rl(state
), added
);
1479 new = alloc_whole_rl(type
);
1482 set_extra_mod(name
, sym
, alloc_estate_rl(new));
1487 static void db_returned_member_info(struct expression
*expr
, int param
, char *key
, char *value
)
1489 struct symbol
*type
;
1492 struct range_list
*rl
;
1494 if (expr
->type
!= EXPR_ASSIGNMENT
)
1497 name
= return_state_to_var_sym(expr
, param
, key
, &sym
);
1500 type
= get_member_type_from_key(expr
->left
, key
);
1503 call_results_to_rl(expr
->right
, type
, value
, &rl
);
1504 set_extra_mod(name
, sym
, alloc_estate_rl(rl
));
1510 static void returned_member_callback(int return_id
, char *return_ranges
, char *printed_name
, struct smatch_state
*state
)
1512 if (estate_is_whole(state
))
1515 /* these are handled in smatch_param_filter/set/limit.c */
1516 if (printed_name
[0] != '*' &&
1517 !strchr(printed_name
, '.') && !strchr(printed_name
, '-'))
1520 sql_insert_return_states(return_id
, return_ranges
, RETURN_VALUE
, -1,
1521 printed_name
, state
->name
);
1524 static void match_call_info(struct expression
*expr
)
1526 struct smatch_state
*state
;
1527 struct range_list
*rl
= NULL
;
1528 struct expression
*arg
;
1529 struct symbol
*type
;
1532 FOR_EACH_PTR(expr
->args
, arg
) {
1533 type
= get_arg_type(expr
->fn
, i
);
1535 if (get_implied_rl(arg
, &rl
))
1536 rl
= cast_rl(type
, rl
);
1538 rl
= cast_rl(type
, alloc_whole_rl(get_type(arg
)));
1540 if (!is_whole_rl(rl
))
1541 sql_insert_caller_info(expr
, PARAM_VALUE
, i
, "$$", show_rl(rl
));
1542 state
= get_state_expr(SMATCH_EXTRA
, arg
);
1543 if (estate_has_fuzzy_max(state
)) {
1544 sql_insert_caller_info(expr
, FUZZY_MAX
, i
, "$$",
1545 sval_to_str(estate_get_fuzzy_max(state
)));
1548 } END_FOR_EACH_PTR(arg
);
1551 static void set_param_value(const char *name
, struct symbol
*sym
, char *key
, char *value
)
1553 struct range_list
*rl
= NULL
;
1554 struct smatch_state
*state
;
1555 struct symbol
*type
;
1558 if (strcmp(key
, "*$$") == 0)
1559 snprintf(fullname
, sizeof(fullname
), "*%s", name
);
1560 else if (strncmp(key
, "$$", 2) == 0)
1561 snprintf(fullname
, 256, "%s%s", name
, key
+ 2);
1565 type
= get_member_type_from_key(symbol_expression(sym
), key
);
1566 str_to_rl(type
, value
, &rl
);
1567 state
= alloc_estate_rl(rl
);
1568 set_state(SMATCH_EXTRA
, fullname
, sym
, state
);
1571 static void set_param_hard_max(const char *name
, struct symbol
*sym
, char *key
, char *value
)
1573 struct range_list
*rl
= NULL
;
1574 struct smatch_state
*state
;
1575 struct symbol
*type
;
1579 if (strcmp(key
, "*$$") == 0)
1580 snprintf(fullname
, sizeof(fullname
), "*%s", name
);
1581 else if (strncmp(key
, "$$", 2) == 0)
1582 snprintf(fullname
, 256, "%s%s", name
, key
+ 2);
1586 state
= get_state(SMATCH_EXTRA
, fullname
, sym
);
1589 type
= get_member_type_from_key(symbol_expression(sym
), key
);
1590 str_to_rl(type
, value
, &rl
);
1591 if (!rl_to_sval(rl
, &max
))
1593 estate_set_fuzzy_max(state
, max
);
1596 void register_smatch_extra(int id
)
1600 add_merge_hook(my_id
, &merge_estates
);
1601 add_unmatched_state_hook(my_id
, &unmatched_state
);
1602 add_hook(&match_function_def
, FUNC_DEF_HOOK
);
1603 add_hook(&match_declarations
, DECLARATION_HOOK
);
1604 select_caller_info_hook(set_param_value
, PARAM_VALUE
);
1605 select_caller_info_hook(set_param_hard_max
, FUZZY_MAX
);
1606 select_return_states_hook(RETURN_VALUE
, &db_returned_member_info
);
1607 select_return_states_before(&db_limited_before
);
1608 select_return_states_hook(LIMITED_VALUE
, &db_param_limit
);
1609 select_return_states_hook(FILTER_VALUE
, &db_param_filter
);
1610 select_return_states_hook(ADDED_VALUE
, &db_param_add
);
1611 select_return_states_after(&db_limited_after
);
1614 void register_smatch_extra_late(int id
)
1616 add_hook(&match_dereferences
, DEREF_HOOK
);
1617 add_hook(&match_pointer_as_array
, OP_HOOK
);
1618 select_call_implies_hook(DEREFERENCE
, &set_param_dereferenced
);
1619 add_hook(&match_function_call
, FUNCTION_CALL_HOOK
);
1620 add_hook(&match_assign
, ASSIGNMENT_HOOK
);
1621 add_hook(&unop_expr
, OP_HOOK
);
1622 add_hook(&asm_expr
, ASM_HOOK
);
1624 add_hook(&match_call_info
, FUNCTION_CALL_HOOK
);
1625 add_member_info_callback(my_id
, struct_member_callback
);
1626 add_returned_member_callback(my_id
, returned_member_callback
);
1628 add_hook(&assume_indexes_are_valid
, OP_HOOK
);