转自：https://bbs.cnbugs.com/read-43-1.html

今天在登陆新安装好的数据库报如下错误：

1. [root@lnmp ~]# mysql -uroot -p
2. Enter password:
3. Welcome to the MySQL monitor. Commands end with ; or \g.
4. Your MySQL connection id is 13
5. Server version: 8.0.21
6.  
7. Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
8.  
9. Oracle is a registered trademark of Oracle Corporation and/or its
10. affiliates. Other names may be trademarks of their respective
11. owners.
12.  
13. Segmentation fault (核心已转储)

原因好像是和C语言有关系

解决办法：

修改terminal.c文件重新编译安装

1. [root@lnmp mysql-8.0.21]# find ./ -name terminal.c
2. ./extra/libedit/libedit-20190324-3.1/src/terminal.c
3.  

查找出来之后按照以下方式修改

1. [root@lnmp mysql-8.0.21]# vim /opt/mysql-8.0.21/extra/libedit/libedit-20190324-3.1/src/terminal.c
2. 842 terminal_set(EditLine *el, const char *term)
3. 843 {
4. 844 int i;
5. 845 /*char buf[TC_BUFSIZE];*/
6. 846 char *area;
7. 847 const struct termcapstr *t;
8. 848 sigset_t oset, nset;
9. 849 int lins, cols;
10. 850
11. 851 (void) sigemptyset(&nset);
12. 852 (void) sigaddset(&nset, SIGWINCH);
13. 853 (void) sigprocmask(SIG_BLOCK, &nset, &oset);
14. 854
15. 855 area = NULL;

修改完之后在重新编译安装就可以了