Core dump when running sql with JDBC

<!-- #请认真填写以下信息，否则可能由于无法定位，导致issue无法解决而被取消 --> 【标题描述】: 【测试类型：SQL功能/存储功能/接口功能/工具功能/性能/并发/压力长稳/故障注入/安全/资料/编码规范】【测试版本：x.x.x】 问题描述 The following SQL script triggers a Core dump when run with JDBC: ``` DROP TABLE IF EXISTS t2; CREATE TABLE t2(c0 REAL DEFAULT (-9.44907E8::float8) UNIQUE NOT NULL); INSERT INTO t2(c0) VALUES(0.9029500692730581::float8); INSERT INTO t2(c0) VALUES(-0.0::float8); UPDATE t2 SET c0=0.07585240333057808::float8 WHERE ((abs((((-1031217163)::int8)+((150729041)::int8))))IS DISTINCT FROM(- (CAST(0.12490921445342684::numeric AS INT)))); ``` This is the rapper file: ``` import java.io.*; import java.sql.*; import java.util.Properties; public class GaussDBExecutor { public static void main(String[] args) { if (args.length != 1) { System.err.println("Usage: java GaussDBExecutor <sql file path>"); System.exit(1); } String filePath = args[0]; String url = "jdbc:postgresql://localhost:5432/postgres"; String user = "test"; String password = "Test@1234"; try (Connection conn = DriverManager.getConnection(url, user, password); BufferedReader reader = new BufferedReader(new FileReader(filePath))) { System.out.println("Connect to GaussDB."); String line; try (Statement stmt = conn.createStatement()) { while ((line = reader.readLine()) != null) { line = line.trim(); if (line.isEmpty() || line.startsWith("--")) { continue; } try { System.out.println("Execute SQL: " + line); boolean hasResult = stmt.execute(line); if (hasResult) { try (ResultSet rs = stmt.getResultSet()) { ResultSetMetaData meta = rs.getMetaData(); int columnCount = meta.getColumnCount(); …