github-actions[bot] commented on code in PR #17800:
URL: https://github.com/apache/doris/pull/17800#discussion_r1136605697


##########
be/src/vec/columns/predicate_column.h:
##########
@@ -300,16 +297,13 @@ class PredicateColumnType final : public 
COWHelper<IColumn, PredicateColumnType<
             return;
         }
         if constexpr (std::is_same_v<T, StringRef>) {
-            if (_pool == nullptr) {
-                _pool.reset(new MemPool());
-            }
-
             size_t total_mem_size = 0;
             for (size_t i = 0; i < num; i++) {
                 total_mem_size += len_array[i];
             }
 
-            char* destination = (char*)_pool->allocate(total_mem_size);
+            strings.resize(strings.size() + total_mem_size);
+            char* destination = strings.data() + strings.size();

Review Comment:
   warning: cannot initialize a variable of type 'char *' with an rvalue of 
type 'unsigned char *' [clang-diagnostic-error]
   ```cpp
               char* destination = strings.data() + strings.size();
                     ^
   ```
   



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