Date: Thu, 11 Sep 1997 16:47:32 -0700 (PDT) From: nsayer@quack.kfu.com To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: bin/4514: stdio does not flush on fork() Message-ID: <199709112347.QAA01738@zephyr.specialix.com> Resent-Message-ID: <199709120000.RAA09897@hub.freebsd.org>
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>Number: 4514
>Category: bin
>Synopsis: stdio does not flush on fork()
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu Sep 11 17:00:01 PDT 1997
>Last-Modified:
>Originator: Nick Sayer
>Organization:
Just me
>Release: FreeBSD 2.2.2-RELEASE i386
>Environment:
>Description:
If the stdio buffers are not flushed, a fork() will replicate
the filled buffer to the child, resulting in doubling the data.
It is inconsistent, however you slice it, to have one printf
call result in multiple outputs.
>How-To-Repeat:
#include <stdio.h>
main()
{
printf("this will appear twice.");
fork();
}
>Fix:
>Audit-Trail:
>Unformatted:
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