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st.c: remove equality checks

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* st.c (st_update): remove equality checks, callers should ensure
  the equality, otherwise the behavior is undefined.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46723 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2014-07-06 15:11:53 +00:00
parent ea74da0c6c
commit 783b3c8d5a
2 changed files with 3 additions and 12 deletions
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3
include/ruby/st.h
View file

@ -115,6 +115,9 @@ int st_insert2(st_table *, st_data_t, st_data_t, st_data_t (*)(st_data_t));
int st_lookup(st_table *, st_data_t, st_data_t *);
int st_get_key(st_table *, st_data_t, st_data_t *);
typedef int st_update_callback_func(st_data_t *key, st_data_t *value, st_data_t arg, int existing);
/* *key may be altered, but must equal to the old key, i.e., the
* results of hash() are same and compare() returns 0, otherwise the
* behavior is undefined */
int st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data_t arg);
int st_foreach(st_table *, int (*)(ANYARGS), st_data_t);
int st_foreach_check(st_table *, int (*)(ANYARGS), st_data_t, st_data_t);

12
st.c
View file

@ -843,16 +843,10 @@ st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data
switch (retval) {
case ST_CONTINUE:
if (!existing) {
if (key != old_key) hash_val = do_hash(key, table);
add_packed_direct(table, key, value, hash_val);
break;
}
if (old_key != PKEY(table, i)) return -1;
if (old_key != key) {
if (do_hash(key, table) != hash_val &&
!EQUAL(table, key, old_key)) {
return -1;
}
PKEY(table, i) = key;
}
PVAL_SET(table, i, value);
@ -879,16 +873,10 @@ st_update(st_table *table, st_data_t key, st_update_callback_func *func, st_data
switch (retval) {
case ST_CONTINUE:
if (!existing) {
if (key != old_key) hash_val = do_hash(key, table);
add_direct(table, key, value, hash_val, hash_pos(hash_val, table->num_bins));
break;
}
if (old_key != ptr->key) return -1;
if (old_key != key) {
if (do_hash(key, table) != hash_val &&
!EQUAL(table, key, old_key)) {
return -1;
}
ptr->key = key;
}
ptr->record = value;