GDB debugging practice (8) transfer startup parameters to the program

occasionally , Our debugger needs to accept input parameters from the command line , Let's see gdb How to pass startup parameters to a debugger .

Sure stay gdb Startup time , Specify the parameters of the debugged program through options , for example ：

$ gdb -args ./a.out a b c

It can also be in gdb in , Set by command , for example ：

(gdb) set args a b c
(gdb) show args
Argument list to give program being debugged when it is started is "a b c".

You can also run the program , Direct designation ：

(gdb) r a b
Starting program: /home/xmj/tmp/a.out a b
(gdb) show args
Argument list to give program being debugged when it is started is "a b".
(gdb) r
Starting program: /home/xmj/tmp/a.out a b 

It can be seen that , The parameters have been saved , Run directly the next time run command , that will do .

Intentionally , If I go on , Want the parameter to be empty , What should I do ？ Yes , direct ：

(gdb) set args