Re: gdb mode with gdb command from the docker

[William Xu]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: William Xu <william.xwl@gmail.com>
>> Date: Sun, 18 Oct 2020 17:08:36 +0200
>> 
>> Then invoke the gdb with: (gdb "/path/gdbWrapper").  The *gud* buffer
>> can be created successfully. The executable file can be loaded OK,
>> however,  it reports some tty error while trying to run the executable: 
>> 
>> ---------------------------------8<------------------------------------- 
>> (gdb) file a.out
>> Load new symbol table from "a.out"? (y or n) [answered Y; input not from 
>> terminal]
>
> This is normal.
>
>> Reading symbols from a.out...done.
>> (gdb) r
>> Starting program: /test/a.out 
>> /dev/ttys002: No such file or directory.
>
> This is not, but the error message seems to come from a.out, not from
> GDB.  So I think you should review the program's code and see why it
> fails that way.

Hmm, I saw similar error in my original executable, in the created test
program,  it only prints a string:

#include <iostream>
int main()
{
        std::cout << "hi" << std::endl;
}

Also as I mentioned, if I run the gdbWrapper directly outside emacs, on
the terminal app (i'm running Terminal on macOS), there is no problem
seen at all . I think it is more likely something wrong inside emacs's
gdb mode. (I tested it also with `emacs -Q',  same error)

-- 
William