build/894: GDB 5.3 incompatibilities with coreutils 4.5.4 in POSIX-2001 mode

[eggert at twinsun dot com]

>Number:         894
>Category:       build
>Synopsis:       GDB 5.3 incompatibilities with coreutils 4.5.4 in POSIX-2001 mode
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Dec 17 16:48:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Paul Eggert
>Release:        gdb-5.3
>Organization:
>Environment:
GNU coreutils 4.5.4
export _POSIX2_VERSION=200112
>Description:
This is a followup to GDB problem report 527.  Some of the
problems that it notes have been fixed, but others remain,
and one or two new ones have been introduced.

In a few places, the GDB build procedure assumes behavior
specified by POSIX 1003.2-1992 that is no longer allowed
by POSIX 1003.1-2001 (dated December 2001).  This includes
the use of the following commands:

head -1
tail -1
sort +2

If you use GNU textutils 2.0.21 with
_POSIX2_VERSION=200112
in the environment, these commands will fail.
>How-To-Repeat:
Install GNU textutils 2.0.21 or later.
Set _POSIX2_VERSION=200112 in the environment.
Build GDB 5.3.
>Fix:
Please see attachment.
>Release-Note:
>Audit-Trail:
>Unformatted:
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