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This issue requires an assignee. Since you haven't specified one, we've assigned TestManager as the default assignee for this issue.
20260912 B023自验ok
20260912转测包自验结果无误：
-- 创建 UTF8 B库
CREATE DATABASE test_b
WITH
DBCOMPATIBILITY = 'B'
ENCODING = 'UTF8'
LC_COLLATE = 'C.UTF-8'
LC_CTYPE = 'C.UTF-8'
TEMPLATE = template0;
\c test_b;
-- 最小用例
drop table if exists t1 cascade;
create table t1(f1 int, f2 varchar(20), f3 timestamp, f4 bit(8), f5 bool) with (orientation = column);
insert into t1 values(1,'a','2022-11-08 19:56:10.158564',x'41',true),
(2,'b','2022-11-09 19:56:10.158564',x'42',false);
alter table t1 modify f1 int after f3;
【回归人员】sungang14
【回归日期】2026.9.12
【回归版本】openGauss 7.0.0B023
【回归结论】通过
【回归步骤】
CREATE DATABASE test_b
WITH
DBCOMPATIBILITY = 'B'
ENCODING = 'UTF8'
LC_COLLATE = 'C.UTF-8'
LC_CTYPE = 'C.UTF-8'
TEMPLATE = template0;
\c test_b;
-- 最小用例
drop table if exists t1 cascade;
create table t1(f1 int, f2 varchar(20), f3 timestamp, f4 bit(8), f5 bool) with (orientation = column);
insert into t1 values(1,'a','2022-11-08 19:56:10.158564',x'41',true),
(2,'b','2022-11-09 19:56:10.158564',x'42',false);
alter table t1 modify f1 int after f3;
测试类型
SQL功能
测试版本
7.0.0LTS
问题描述
在 DEBUG_TYPE=memcheck（ASan + 断言）构建下，跑单机 fastcheck 回归 parallel_schedule0，用例 alter_table_000 / alter_table_003（列存表 ALTER TABLE 修改列类型）执行时，gaussdb 后端线程崩溃，ASan 报告空指针读（地址 0x1）。
操作系统和硬件信息
版本/commit：0943319e6b1562500a48ef9fb8da9c81e0763a96
平台：aarch64（Kunpeng），openEuler
构建：build.sh -m memcheck（-fsanitize=address -fsanitize=leak -fno-omit-frame-pointer -static-libasan -O0 -g，ENABLE_MEMORY_CHECK=ON，-DENABLE_HTAP）
回归：make fastcheck_single p=21000，schedule=parallel_schedule0
触发用例：alter_table_000、alter_table_003（dolphin B 库，contrib/dolphin）
测试环境
企业版单机
被测功能
预置条件
操作步骤
最小用例：
预期输出
实际输出
日志信息
runlog如下
提单组织
内部开发
测试代码