From: qq510371827 <qq510371827@gmail.com>
To: 12163@debbugs.gnu.org
Subject: bug#12163: 24.1; Can not input anything or showing none output when debugging c/c++ application.
Date: Fri, 10 Aug 2012 18:18:44 +0800 [thread overview]
Message-ID: <CAORnh3icm+MjYUOUbKfihcJdekMNKgztT0ghw2P3fFS+bnaMVQ@mail.gmail.com> (raw)
In-Reply-To: <837gt7dqjm.fsf@gnu.org>
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2012/8/10 Eli Zaretskii <eliz@gnu.org>
> > From: qq510371827 <qq510371827@gmail.com>
> > Date: Fri, 10 Aug 2012 17:14:14 +0800
> >
> > > Try invoking GDB from Emacs like this:
> > >
> > > M-x gud-gdb RET
> > >
> > > If that doesn't help, either, then I'm clueless, sorry. Perhaps
> > > someone else could help.
> > >
> > Thanks for your patience. It finally works. However, two other new
> > problem appeared after using 'gud-gdb'.
> > 1).the code, gdb information and out/input datas mixed together in the
> same
> > buffer and 'gdb-many-windows' command didn't work any more.
>
> This is expected. gud-gdb uses the old interface with GDB, which
> doesn't support gdb-many-windows.
>
> > 2) You can refer this link:
> > http://stackoverflow.com/questions/9676135/gud-gdb-emacs-24-not-working
> > The same problem as mine.
>
> No, it isn't the same. Your problem was with getting input and output
> to and from the debuggee. The above URL describes a much more serious
> problem, whereby Emacs doesn't show the source code of functions you
> step through. I don't see any of this in your original bug report
> (and it surely works for me on MS-Windows).
> I'm sorry.I got it wrong.
> As for the original problem: could you please post here a minimal C
> program that exhibits the problem with I/O when you use "M-x gdb"? I
> will then try to look into the reasons of this and the possible ways
> to solve that, when I have time.
>
> Thanks.
>
Ok,source code is as follows:
#include "stdio.h"
#include "ctype.h"
#include "string.h"
void Reverse(char* p,int n)
{
if(--n > 0) Reverse(p+1,n);
printf("%c",*p);
fflush(stdout);
}
int main()
{
//setbuf(stdin,NULL);
//setbuf(stdout,NULL);
// setvbuf(stdin,NULL,_IONBF,0);
// setvbuf(stdout,NULL,_IONBF,0);
//freopen("input.txt","r",stdin);
char s[255],*p,*q;
int i=0,n;
fgets(s,255,stdin);
s[strlen(s)-1] = ' ';
p = q = s; // set breakpoint at this
line.
while(*p != '\0')
{
i++;
p++;
if(isspace(*p))
{
n = i;
i = 0;
Reverse(q,n);
q = p+1;
}
}
n = i;
Reverse(q,n);
printf("\n");
return 0;
}
Thanks in advance.
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next prev parent reply other threads:[~2012-08-10 10:18 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-09 14:54 bug#12163: 24.1; Can not input anything or showing none output when debugging c/c++ application qq510371827
[not found] ` <83obmkdoli.fsf@gnu.org>
[not found] ` <CAORnh3gDSy9iG=o8E=Hnx=UaqzM6+Of5iN99-7Gyp46iVVMJHw@mail.gmail.com>
2012-08-10 6:37 ` Eli Zaretskii
2012-08-10 9:14 ` qq510371827
2012-08-10 9:50 ` Eli Zaretskii
2012-08-10 10:18 ` qq510371827 [this message]
2012-08-10 17:57 ` Eli Zaretskii
2012-08-11 12:32 ` qq510371827
2012-08-11 14:31 ` Eli Zaretskii
[not found] ` <CAORnh3gFYYVmB7gujppmv3cs6rGm6Dei1vPYxGixtnVLSXrC5w@mail.gmail.com>
2012-08-11 15:11 ` bug#12180: Fwd: " qq510371827
2012-08-11 16:15 ` bug#12180: " Eli Zaretskii
2012-08-12 1:32 ` qq510371827
2012-08-12 17:56 ` Eli Zaretskii
2012-08-13 14:00 ` qq510371827
2022-02-07 0:05 ` bug#12163: bug#12180: Fwd: " Lars Ingebrigtsen
2022-03-07 2:37 ` Lars Ingebrigtsen
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