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Date: Tue, 10 Mar 1998 01:47:10 +0300 (MSK)
From: Dmitry Khrustalev <dima@bog.msu.su>
To: freebsd-gnats-submit@FreeBSD.ORG
Subject: bin/5961: dup2 wrapper in libc_r is incomplete
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>Number:         5961
>Category:       bin
>Synopsis:       dup2 wrapper in libc_r is incomplete
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Mar  9 14:50:03 PST 1998
>Last-Modified:
>Originator:     Dmitry Khrustalev
>Organization:
>Release:        FreeBSD 3.0-CURRENT i386
>Environment:

	perl5.004_62, cc -pthread

>Description:

	Then dup2 is given closed newfd it will call _thread_fd_lock on
closed file descriptor and fail. 

>How-To-Repeat:

	build multithreaded perl5, it will break due to inproper behavior of
	dup2 wrapper.

>Fix:
	
	I'm not shure what is the proper test for closed fd condition.
	Maybe _thread_fd_table[fd] == NULL ?

>Audit-Trail:
>Unformatted:

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