linux-kernel - Re: 3.5.rc2 tty buffering bug ?

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Message-ID: <20120614162257.GA5238@redhat.com>
Date:	Thu, 14 Jun 2012 12:22:57 -0400
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: 3.5.rc2 tty buffering bug ?

On Thu, Jun 14, 2012 at 12:13:31PM -0400, Dave Jones wrote:
 
 > #include <stdio.h>
 > 
 > void main()
 > {
 > 	printf("begin\n");
 > 
 > 	if (fork() != 0)
 > 		printf("child\n");
 > 	else
 > 		printf("parent\n");
 > 
 > 	printf("end\n");
 > }
 > 
 > How does 'begin' get printed a second time ?

Someone pointed out that an fflush is needed before the fork.
Somehow I've managed to go all these years without knowing that.

	Dave

 
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