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Fix copying of functions in variance obligations

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Only copy sizeof(zend_internal_function) for internal functions.
This commit is contained in:
Nikita Popov 2020-01-30 11:55:38 +01:00
parent a73f98eda9
commit 68596ed71e
2 changed files with 23 additions and 2 deletions
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13
Zend/zend_inheritance.c
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@ -2294,8 +2294,17 @@ static void add_compatibility_obligation(
HashTable *obligations = get_or_init_obligations_for_class(ce);
variance_obligation *obligation = emalloc(sizeof(variance_obligation));
obligation->type = OBLIGATION_COMPATIBILITY;
obligation->child_fn = *child_fn;
obligation->parent_fn = *parent_fn;
/* Copy functions, because they may be stack-allocated in the case of traits. */
if (child_fn->common.type == ZEND_INTERNAL_FUNCTION) {
memcpy(&obligation->child_fn, child_fn, sizeof(zend_internal_function));
} else {
memcpy(&obligation->child_fn, child_fn, sizeof(zend_op_array));
}
if (parent_fn->common.type == ZEND_INTERNAL_FUNCTION) {
memcpy(&obligation->parent_fn, parent_fn, sizeof(zend_internal_function));
} else {
memcpy(&obligation->parent_fn, parent_fn, sizeof(zend_op_array));
}
obligation->always_error = always_error;
zend_hash_next_index_insert_ptr(obligations, obligation);
}