[CP] fix a core caused by omitting the deep copy

src/sql/engine/expr/ob_expr_to_outfile_row.cpp

@@ -256,9 +256,9 @@ int ObExprToOutfileRow::print_field(char *buf, const int64_t buf_len, int64_t &p
       } else if (wchar == out_info.wchar_enclose_ || wchar == out_info.wchar_escape_) {
         OZ(out_info.escape_.print_plain_str_literal(buf, buf_len, pos, out_info.print_params_));
         OZ(copy_string_to_buf(buf, buf_len, pos, code_point));
-      } else if (!need_enclose && (wchar == out_info.wchar_field_ ||
-                                   wchar == out_info.wchar_line_)) {
-        OZ(out_info.escape_.print_plain_str_literal(buf, buf_len, pos, out_info.print_params_));
+      } else if (!need_enclose && (wchar == out_info.wchar_field_ ||
+                                   wchar == out_info.wchar_line_)) {
+        OZ(out_info.escape_.print_plain_str_literal(buf, buf_len, pos, out_info.print_params_));
         OZ(copy_string_to_buf(buf, buf_len, pos, code_point));
       } else {
         OZ(copy_string_to_buf(buf, buf_len, pos, code_point));

src/sql/resolver/ddl/ob_ddl_resolver.cpp

@@ -5592,9 +5592,9 @@ int ObDDLResolver::check_column_in_foreign_key_for_oracle(
               ret = OB_ALLOCATE_MEMORY_FAILED;
               SQL_RESV_LOG(ERROR, "failed to allocate memory", K(ret));
             } else if (FALSE_IT(foreign_key_arg = new (tmp_ptr)ObDropForeignKeyArg())) {
-            } else if (FALSE_IT(foreign_key_arg->foreign_key_name_.assign_ptr(
-                                foreign_key_info.foreign_key_name_.ptr(),
-                                foreign_key_info.foreign_key_name_.length()))) {
+            } else if (OB_FAIL(deep_copy_str(foreign_key_info.foreign_key_name_,
+                                             foreign_key_arg->foreign_key_name_))) {
+              LOG_WARN("failed to deep copy foreign_key_name", K(ret), K(foreign_key_info));
             } else if (OB_ISNULL(alter_table_stmt)) {
               ret = OB_ERR_UNEXPECTED;
               SQL_RESV_LOG(WARN, "alter table stmt should not be null", K(ret));