can't handle command-line argument containing whitespace

can't handle command-line argument containing whitespace

[Peng Yu]

Hi,

I got the following error. Is there a way to allow gdb accept
arguments with whitespaces? Thanks

$ ./main.exe 'a b c'
a b c
$ cat main.c
/* vim: set noexpandtab tabstop=2: */
#include <stdio.h>

int main(int argc, char *argv[]) {
    puts(argv[1]);
    return 0;
}
$ gdb -q --args main.exe  'a b c'
Reading symbols from main.exe...(no debugging symbols found)...done.
(gdb) r
Starting program: /root/linux/test/gnu/gdb/bin/--args/main.exe can't
handle command-line argument containing whitespace
(gdb)

-- 
Regards,
Peng

Re: can't handle command-line argument containing whitespace

[Eli Zaretskii]

On January 21, 2019 6:50:25 AM GMT+02:00, Peng Yu <pengyu.ut@gmail.com> wrote:
> Hi,
> 
> I got the following error. Is there a way to allow gdb accept
> arguments with whitespaces? Thanks
> 
> $ ./main.exe 'a b c'
> a b c
> $ cat main.c
> /* vim: set noexpandtab tabstop=2: */
> #include <stdio.h>
> 
> int main(int argc, char *argv[]) {
>     puts(argv[1]);
>     return 0;
> }
> $ gdb -q --args main.exe  'a b c'
> Reading symbols from main.exe...(no debugging symbols found)...done.
> (gdb) r
> Starting program: /root/linux/test/gnu/gdb/bin/--args/main.exe can't
> handle command-line argument containing whitespace
> (gdb)

Try this GDB command:

(gdb) set startup-with-shell on

Re: can't handle command-line argument containing whitespace

[Peng Yu]

> Try this GDB command:
>
> (gdb) set startup-with-shell on

But it doesn't work with the -batch option. It hangs there forever.
How to fix it? Thanks.

$ gdb -batch -ex 'set startup-with-shell on' -ex run --args ./main.exe 'a b c'
[New Thread 0x1803 of process 56945]

-- 
Regards,
Peng

Re: can't handle command-line argument containing whitespace

[Eli Zaretskii]

> From: Peng Yu <pengyu.ut@gmail.com>
> Date: Mon, 21 Jan 2019 07:16:41 -0600
> Cc: "gdb@sourceware.org" <gdb@sourceware.org>
> 
> > Try this GDB command:
> >
> > (gdb) set startup-with-shell on
> 
> But it doesn't work with the -batch option. It hangs there forever.
> How to fix it? Thanks.

Don't run your program from the command line, run it from a script
file that you load via the -x command-line switch.  In that script,
put the "set startup-with-shell on" command first, then your "run"
command with the arguments for the program you want to debug.

(Why do you run GDB with -batch, btw?  GDB is an interactive debugger,
so you should have a way of interacting with it.)