Date: Mon, 10 Dec 2001 12:05:36 +1300 (NZDT) From: ihaka@stat.auckland.ac.nz To: FreeBSD-gnats-submit@freebsd.org Subject: bin/32657: sed incompatibility Message-ID: <200112092305.fB9N5a017671@stat1.stat.auckland.ac.nz>
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>Number: 32657 >Category: bin >Synopsis: sed file handing is non-standard >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sun Dec 09 15:10:02 PST 2001 >Closed-Date: >Last-Modified: >Originator: Ross Ihaka >Release: FreeBSD 4.2-RELEASE i386 >Organization: Statistics Department, University of Auckland >Environment: not relevant >Description: The sed manual entry says: The ``r'' and ``w'' functions take an optional file parameter, which should be separated from the function letter by white space. Each file given as an argument to sed is created (or its contents truncated) before any input processing begins. Under FreeBSD (and possibly other BSD systems) the file parameter is mandatory -- sed terminates with an error message if an editing command of one of the forms /pattern/r /pattern/w is encountered. Other sed versions (e.g. GNU and Solaris) silently ignore such constructions. This kind constructions appears in scripts generated by autoconf which work on other platforms, but not FreeBSD. >How-To-Repeat: Utter the command: sed '/pattern/r' >Fix: In /usr/src/usr.bin/sed/compile.c in the function compile_stream, (cases WFILE and RFILE) there are lines if (*p == '\0') errx(1, "%lu: %s: filename expected", linenum, fname); else cmd->t = duptoeol(p, "read command"); removing the first three of these lines will cause the filename "" to be passed on for later processing. This will produce the same effect as specifying a file which does not exist (the problem is silently ignored). This change would produce a warning message from duptoeol about trailing white space. This message does not seem to occur in other sed variants. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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