93 lines
3.0 KiB
Awk
93 lines
3.0 KiB
Awk
#From hankedr@manatee.dms.auburn.edu Tue Oct 13 22:15:59 1998
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# for <arobbins@netvision.net.il>; Tue, 13 Oct 1998 15:32:13 +0200 (IST)
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#Received: from mescaline.gnu.org (we-refuse-to-spy-on-our-users@mescaline.gnu.org [158.121.106.21]) by cssun.mathcs.emory.edu (8.7.5/8.6.9-940818.01cssun) with ESMTP id KAA11644 for <arnold@mathcs.emory.edu>; Tue, 13 Oct 1998 10:22:32 -0400 (EDT)
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# for <arnold@gnu.org>; Tue, 13 Oct 1998 10:25:32 -0400
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# by manatee.dms.auburn.edu (8.9.1a/8.9.1) id JAA13348;
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# Tue, 13 Oct 1998 09:22:29 -0500 (CDT)
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#Date: Tue, 13 Oct 1998 09:22:29 -0500 (CDT)
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#Message-Id: <199810131422.JAA13348@manatee.dms.auburn.edu>
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#From: Darrel Hankerson <hankedr@dms.auburn.edu>
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#To: arnold@gnu.org
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#In-reply-to: <199810131313.QAA31784@alpha.netvision.net.il> (message from
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# Aharon Robbins on Tue, 13 Oct 1998 16:10:36 +0200)
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#Subject: Re: full text of bug report?
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#Mime-Version: 1.0
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#Content-Type: text/plain; charset=US-ASCII
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#X-UIDL: bf3fce492dad4ab030c561e7b2f27d0a
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#Status: RO
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#
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# Do you have the full text of the a = a "\n" f() bug report?
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# I can't find it.... I'm not sure there really is a bug.
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#
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#Yes, see below.
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#
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#His example has unnecessary fragments (in particular, the use of
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#gensub is irrelevant). As I wrote to you earlier, the interesting
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#question for me is:
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#
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# Is the concatenation result undefined? If the result is defined or
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# implementation-dependent, then gawk has a bug.
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#
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#
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#=== Original report =====================================================
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#From: Attila Torcsvari <arcdev@mail.matav.hu>
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#To: "'bug-gnu-utils@prep.ai.mit.edu'" <bug-gnu-utils@gnu.org>
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#Subject: gawk 3.0.3 bug
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#Date: Thu, 17 Sep 1998 18:12:13 +0200
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#MIME-Version: 1.0
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#Content-Transfer-Encoding: 7bit
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#Resent-From: bug-gnu-utils@gnu.org
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#X-Mailing-List: <bug-gnu-utils@gnu.org> archive/latest/3396
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#X-Loop: bug-gnu-utils@gnu.org
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#Precedence: list
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#Resent-Sender: bug-gnu-utils-request@gnu.org
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#Content-Transfer-Encoding: 7bit
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#Content-Type: text/plain; charset="us-ascii"
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#Content-Length: 618
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#
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#Bug-gnuers,
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#please pass it to the responsible.
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#
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#The following generates something interesting:
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#
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BEGIN{
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a="aaaaa"
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a=a a #10
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a=a a #20
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a=a a #40
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a=a a #80
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a=a a #160
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a=a a # i.e. a is long enough
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a=a"\n"f() # this causes the trouble
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print a # guess the result
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}
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function f()
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{
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#print "a before: ", a
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#a=gensub("a","123,","g",a) # 'a' will be just a bit longer (4 times, but still should fit: 4*160=640)
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gsub(/a/, "123", a)
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#print "a after: ", a
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return "X"
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}
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#
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#Possible reason:
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#during f the a is modified,
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#it can be even freed, because gensub modifies its size
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#the printout contains trash.
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#
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#Used version: VC compiled WinNT 32 bit Intel.
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#
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#Regards,
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#
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#Attila Torcsvari
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#Arcanum Development
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#
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