gdb利用core文件来定位segmentation error

1. make -g **

- add -g option to enable gdb debug.

 

2. ulimit -c unlimited

- Enable coredump file to be created when segmentation fault occurs.

 

3. Gdb ./bin core.xxxx

- Get the core dump info. By the gdb

 

4. bt/backtrace

- Back trace the point that program gets segmentation fault

 

5. q/quit

- Leave GDB