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Hello,

I see a strange behavior with the g15_send function.
g15_send function works correctly when I call it in a normal function but it doesn't work in the main function.

In a normal function :

/* gcc -lg15daemon_client -lg15render test1.c */
#include /* for g15r_initCanvas and g15r_clearScreen */
#include /* for new_g15_screen, g15_close_screen and g15_send */
#include /* for fprintf */
int draw(int g15_screen)
{
g15canvas my_g15canvas;
/* init the canvas */
g15r_initCanvas(&my_g15canvas);
/* draw on the screen */
g15r_clearScreen(&my_g15canvas, 0);
/* send the image to the daemon */
if( g15_send(g15_screen, (char*)&my_g15canvas.buffer, G15_BUFFER_LEN) == -1 )
{
fprintf(stderr, "draw: error (g15_send).\n");
return(-1);
}
sleep(5);
return(0);
}
int main()
{
int g15_screen;
/* open a screen */
if( (g15_screen = new_g15_screen(G15_G15RBUF)) == -1 )
{
fprintf(stderr, "main: error (new_g15_screen).\n");
return(-1);
}
/* draw on the screen */
if(draw(g15_screen) == -1)
{
fprintf(stderr, "main: error (draw).\n");
return(-1);
}
/* close the screen */
if( g15_close_screen(g15_screen) == -1 )
{
fprintf(stderr, "main: error (g15_close_screen).\n");
return(-1);
}
return(0);
}

$ gcc -lg15daemon_client -lg15render test1.c
$ ./a.out

In the main function :

/* gcc -lg15daemon_client -lg15render test2.c */
#include /* for g15r_initCanvas and g15r_clearScreen */
#include /* for new_g15_screen, g15_close_screen and g15_send */
#include /* for fprintf */
int main()
{
int g15_screen;
g15canvas my_g15canvas;
/* open a screen */
if( (g15_screen = new_g15_screen(G15_G15RBUF)) == -1 )
{
fprintf(stderr, "main: error (new_g15_screen).\n");
return(-1);
}
/* init the canvas */
g15r_initCanvas(&my_g15canvas);
/* draw on the screen */
g15r_clearScreen(&my_g15canvas, 0);
/* send the image to the daemon */
if( g15_send(g15_screen, (char*)&my_g15canvas.buffer, G15_BUFFER_LEN) == -1 )
{
fprintf(stderr, "main: error (g15_send).\n");
return(-1);
}
sleep(5);
/* close the screen */
if( g15_close_screen(g15_screen) == -1 )
{
fprintf(stderr, "main: error (g15_close_screen).\n");
return(-1);
}
return(0);
}

$ gcc -lg15daemon_client -lg15render test2.c
$ ./a.out
main: error (g15_send).

Probably my fault but can you explain me why it works only in the first case please?

Thank you.

This is a test mail for the new list.

kind regards Philip