# 为调试进程产生core dump文件 # 技巧 在用gdb调试程序时，我们有时想让被调试的进程产生core dump文件，记录现在进程的状态，以供以后分析。可以用“generate-core-file”命令来产生core dump文件： (gdb) help generate-core-file Save a core file with the current state of the debugged process. Argument is optional filename. Default filename is 'core.<process_id>'. (gdb) start Temporary breakpoint 1 at 0x8050c12: file a.c, line 9. Starting program: /data1/nan/a [Thread debugging using libthread_db enabled] [New Thread 1 (LWP 1)] [Switching to Thread 1 (LWP 1)] Temporary breakpoint 1, main () at a.c:9 9 change_var(); (gdb) generate-core-file Saved corefile core.12955 也可使用“gcore”命令： (gdb) help gcore Save a core file with the current state of the debugged process. Argument is optional filename. Default filename is 'core.<process_id>'. (gdb) gcore Saved corefile core.13256 参见[gdb手册](https://sourceware.org/gdb/onlinedocs/gdb/Core-File-Generation.html) ## 贡献者 nanxiao