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cex: be sure to always reclaim memory put in hashes

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One call to hash_initialize did not provide a function to free memory.

* src/state-item.c (hash_pair_table_create): New.
Use it.
This commit is contained in:
Akim Demaille
2020-05-17 17:22:29 +02:00
parent 193dc86965
commit e8619330e8
1 changed files with 15 additions and 14 deletions
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29
src/state-item.c
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@@ -65,6 +65,16 @@ hash_pair_free (hash_pair *hp)
free (hp);
}
Hash_table *
hash_pair_table_create (int size)
{
return hash_xinitialize (size,
NULL,
(Hash_hasher) hash_pair_hasher,
(Hash_comparator) hash_pair_comparator,
(Hash_data_freer) hash_pair_free);
}
static bitset
hash_pair_lookup (Hash_table *tab, int key)
{
@@ -208,8 +218,8 @@ init_trans (void)
state *s = states[i];
transitions *t = s->transitions;
Hash_table *transition_set
= hash_initialize (t->num, NULL, (Hash_hasher) state_sym_hasher,
(Hash_comparator) state_sym_comparator, NULL);
= hash_xinitialize (t->num, NULL, (Hash_hasher) state_sym_hasher,
(Hash_comparator) state_sym_comparator, NULL);
for (int j = 0; j < t->num; ++j)
if (!TRANSITION_IS_DISABLED (t, j))
hash_xinsert (transition_set, t->states[j]);
@@ -249,21 +259,13 @@ si_prods_lookup (state_item_number si)
static void
init_prods (void)
{
si_prods = hash_initialize (nstate_items,
NULL,
(Hash_hasher) hash_pair_hasher,
(Hash_comparator) hash_pair_comparator,
(Hash_data_freer) hash_pair_free);
si_prods = hash_pair_table_create (nstate_items);
for (int i = 0; i < nstates; ++i)
{
state *s = states[i];
// closure_map is a hash map from nonterminals to a set
// of the items that produce those nonterminals
Hash_table *closure_map
= hash_initialize (nsyms - ntokens, NULL,
(Hash_hasher) hash_pair_hasher,
(Hash_comparator) hash_pair_comparator,
NULL);
Hash_table *closure_map = hash_pair_table_create (nsyms - ntokens);
// Add the nitems of state to skip to the production portion
// of that state's state_items
@@ -379,8 +381,7 @@ init_firsts (void)
symbol_number lhs = r->lhs->number;
bitset f_lhs = FIRSTS (lhs);
for (item_number *n = r->rhs;
item_number_is_symbol_number (*n) &&
ISVAR (*n);
item_number_is_symbol_number (*n) && ISVAR (*n);
++n)
{
bitset f = FIRSTS (*n);