>Number:         4833
>Category:       bin
>Synopsis:       sed broken wrt '?' and '+' regexps
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people (Utility Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jan 16 16:20:02 1998
>Last-Modified:
>Originator:     Hubert Feyrer
>Organization:
Hubert Feyrer <hubert.feyrer@rz.uni-regensburg.de>
>Release:        1.3
>Environment:
	NetBSD/i386, V1.3
System: NetBSD miyu 1.3 NetBSD 1.3 (MIYU) #6: Wed Dec 31 04:47:13 MET 1997 feyrer@miyu:/data/cvs/src/sys/arch/i386/compile/MIYU i386


>Description:
	Neither '?' nor '+' are propperly processed in sed REs.

>How-To-Repeat:
	miyu# echo match | sed -ne '/.?/p'
	miyu# echo match | sed -ne '/.+/p'
	miyu# echo match | sed -ne '/.*/p'
	match

>Fix:

Well, a workaround, rather:

--- /usr/src/usr.bin/sed/compile.c.orig Fri Jan 16 23:35:59 1998
+++ /usr/src/usr.bin/sed/compile.c      Fri Jan 16 23:33:39 1998
@@ -431,7 +431,7 @@
                return (p);
        }
        *repp = xmalloc(sizeof(regex_t));
-       if (p && (eval = regcomp(*repp, re, 0)) != 0)
+       if (p && (eval = regcomp(*repp, re, REG_EXTENDED)) != 0)
                err(COMPILE, "RE error: %s", strregerror(eval, *repp));
        if (maxnsub < (*repp)->re_nsub)
                maxnsub = (*repp)->re_nsub;
>Audit-Trail:
>Unformatted: