gdb调试cordump文件

自己在调试的时候，简单的使用方法，目前只是菜鸟水平，后面继续学习
资料
https://blog.youkuaiyun.com/zhangye3017/article/details/80382496

1.环境准备：

使应用崩溃可以生成core文件

ulimit -c unlimited

2.调试core文件

gdb 应用名称 XXX.core

程序崩溃，bt查看堆栈信息

Switching to thread 1 (LWP 687)]
#0 kill (pid=<optimized out>, sig=6) at src/signal/kill.c:7
7 src/signal/kill.c: No such file or directory.
(gdb) bt
#0 kill (pid=<optimized out>, sig=6) at src/signal/kill.c:7
#1 <signal handler called>
#2 congruent_aligned32 () at src/string/arm/memcpy_le.S:149
#3 0xb6dddb7c in FB_FlipHWSurface () from /usr/lib/libminigui_ths-3.2.so.0
#4 0x0012c000 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
info threads 查看几个线程前面的数字是线程id

查看有几个线程,并且信息会标识出在哪个线程死掉

(gdb) info thread
Id Target Id Frame 
29 LWP 1005 __munmap (start=0xb66d3000,