Re: a question about gdb in emacs

[Eli Zaretskii]

> Date: Wed, 4 Jun 2014 16:36:31 +0800 (CST)
> From: x_uch  <x_uch@163.com>
> 
> While i debuged the application in windows that use emacs, the buffer of 
> emacs can't get the output,but in system, everything is ok. I don't know 
> where the error is in me or the emacs.
> in windows , prommpt can get the output like this:
> 
> 
> and in emacs ,gdb buffer like this:
> 
> Here is the application, i download from sqlite site,web address 
> http://www.sqlite.org/2014/sqlite-amalgamation-3080403.zip .In windows ,i 
> compiled it using mingw,
> using "gcc -g -o sqlite3 shell.c sqlite3.c" to build sqlite3.exe
> 
> I tried other app, source code:
> #include <stdio.h>
> typedef struct {
>   float a;
>   float b;
> } substruct;
> 
> struct {
>   int i;
>   substruct r;
> } c;
> 
> myproc(n)
> {
>   int p;
>   p = 2*n;
>   printf("Two times %d is %d\n", n, p);
> }
> 
> main() {
>   int n = 4;
>   int m[10] = {0,1,4,9,16,25,36,49,64,81};
>   n = 5;
>   myproc(n);
>   c.i = 1;
>   c.r.a = 0.5;
>   c.r.b = 0.25;
> }
> saved it to test.c,build by gcc -o test test.c -g
> in windows and emacs gdb all can get the output "Two times 5 is 10"
> so i think the problem in emacs,but i have not enough time to read the source 
> code......

Try adding

  fflush (stdout);

after each printf call.  This might well be a buffering issue.