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-rw-r--r--ext/spl/spl_array.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/ext/spl/spl_array.c b/ext/spl/spl_array.c
index 6ee67bfe94..f450e0b715 100644
--- a/ext/spl/spl_array.c
+++ b/ext/spl/spl_array.c
@@ -931,7 +931,14 @@ static int spl_array_skip_protected(spl_array_object *intern, HashTable *aht TSR
if (Z_TYPE_P(intern->array) == IS_OBJECT) {
do {
if (zend_hash_get_current_key_ex(aht, &string_key, &string_length, &num_key, 0, &intern->pos) == HASH_KEY_IS_STRING) {
- if (!string_length || string_key[0]) {
+ /* zend_hash_get_current_key_ex() should never set
+ * string_length to 0 when returning HASH_KEY_IS_STRING, but we
+ * may as well be defensive and consider that successful.
+ * Beyond that, we're looking for protected keys (which will
+ * have a null byte at string_key[0]), but want to avoid
+ * skipping completely empty keys (which will also have the
+ * null byte, but a string_length of 1). */
+ if (!string_length || string_key[0] || string_length == 1) {
return SUCCESS;
}
} else {