MDEV-35919 Server crashes in Item_func_vec_distance::fix_length_and_dec upon reading from I_S table

mysql-test/main/vector_funcs.result

@@ -260,4 +260,9 @@ x
 2222
 drop view v;
 drop table t;
+#
+# MDEV-35919 Server crashes in Item_func_vec_distance::fix_length_and_dec upon reading from I_S table
+#
+select vec_distance(value(key_cache_name), 0x30303030) from information_schema.key_caches;
+ERROR HY000: Cannot determine distance type for VEC_DISTANCE, index is not found
 # End of 11.8 tests

mysql-test/main/vector_funcs.test

@@ -147,4 +147,10 @@ select * from v order by vec_distance(0x30303030, x);
 drop view v;
 drop table t;
 
+--echo #
+--echo # MDEV-35919 Server crashes in Item_func_vec_distance::fix_length_and_dec upon reading from I_S table
+--echo #
+--error ER_VEC_DISTANCE_TYPE
+select vec_distance(value(key_cache_name), 0x30303030) from information_schema.key_caches;
+
 --echo # End of 11.8 tests

sql/item_vectorfunc.cc

@@ -64,6 +64,8 @@ bool Item_func_vec_distance::fix_length_and_dec(THD *thd)
       if (auto *item= dynamic_cast<Item_field*>(args[i]->real_item()))
       {
         TABLE_SHARE *share= item->field->orig_table->s;
+        if (share->tmp_table)
+          break;
         Field *f= share->field[item->field->field_index];
         KEY *kinfo= share->key_info;
         for (uint j= share->keys; j < share->total_keys; j++)