*Synopsis*: *ksh93* bug in pattern matching
CR 6766246 changed on Dec 23 2008 by <User 1-5Q-5151>
=== Field ============ === New Value ============= === Old Value =============
See Also 6437624
====================== =========================== ===========================
*Change Request ID*: 6766246
*Synopsis*: *ksh93* bug in pattern matching
Product: solaris
Category: shell
Subcategory: korn93
Type: Defect
Subtype:
Status: 7-Fix in Progress
Substatus:
Priority: 3-Medium
Introduced In Release: solaris_nevada
Introduced In Build: snv_72
Responsible Engineer: <User 1-5Q-5151>
Keywords: opensolaris, oss-request, oss-sponsor
=== *Description* ============================================================
Category
shell
Sub-Category
bourne
Description
This was already reported as
http://www.opensolaris.org/jive/thread.jspa?threadID=80967
The bootstrap script of pkgsrc contains this code
checkarg_sane_absolute_path() {
case "$1" in
"") ;; # the default value will be used.
*[!-A-Za-z0-9_./]*)
die "ERROR: Invalid characters in path $1 (from $2)." ;;
/*) ;;
*) die "ERROR: The argument to $2 must be an absolute path." ;;
esac
}
It turns out, the leading "!" in the pattern is not interpreted as negation,
and the first "-" not as a literal. Instead the character range "! to A" is
constructed. Paths containing "%" or "@" are accepted, but paths containing "-"
are rejected. Note that this interpretation makes the whole pattern
syntactically wrong, which isn't noticed either.
Frequency
Always
Regression
Solaris 10
Steps to Reproduce
run example below
Expected Result
strings containing a "-" should be accepted, strings containing a "@" should
be rejected
Actual Result
strings containing a "-" are rejected, strings containing a "@" are accepted
Error Message(s)
Test Case
#!/bin/sh
case "$1" in
*[!-A-Za-z0-9_./]*)
echo invalid characters used in $1
;;
*)
echo only valid characters used in $1
;;
esac
Workaround
The pattern "*[!A-Za-z0-9_./-]*" (i.e. shifting the dash to the end) works
as expected.
Submitter wants to work on bug
No
Additional configuration information
*** (#1 of 1): 2008-10-31 17:54:10 GMT+00:00 <User 1-F4SZV>
=== *Public Comments* ========================================================
Since the post on the forums that was posted to says "I am using OpenSolaris
2008.05.", assigning this to shell/korn93, not shell/bourne.
(2008.05 /bin/sh is ksh93.)
*** (#1 of 2): 2008-11-04 04:09:56 GMT+00:00 alan.coopersmith at sun.com
*** Last Edit: 2008-11-04 15:23:49 GMT+00:00 alan.coopersmith at sun.com
Glenn Fowler has responded to the bug report on the ksh93-integration-discuss
list/forum on opensolaris.org with:
thanks for the report
its a coding bug exposed by character class ranges in non-C locales
as a temporary workaround, the matching should work as expected for LC_ALL=C
the fix has been posted in the official 2008-11-04 source tarballs at
http://www.research.att.com/sw/download/
[Thread at http://www.opensolaris.org/jive/thread.jspa?threadID=81453&tstart=0 ]
*** (#2 of 2): 2008-11-04 15:23:49 GMT+00:00 alan.coopersmith at sun.com
=== *Workaround* =============================================================
=== *Additional Details* =====================================================
Targeted Release: solaris_nevada
Commit To Fix In Build: snv_106
Fixed In Build:
Integrated In Build:
Verified In Build:
See Also: 6437624, 6619428
Duplicate of:
Hooks:
Hook1:
Hook2:
Hook3:
Hook4:
Hook5: <email address omitted>
Hook6: <email address omitted>
Program Management:
Root Cause: Other - see Research Activity
Fix Affects Documentation: No
Fix Affects Localization: No
=== *History* ================================================================
Date Submitted: 2008-10-31 17:54:09 GMT+00:00
Submitted By: <User 1-F4SZV>
Status Changed Date Updated Updated By
6-Fix Understood 2008-11-04 22:23:05 GMT+00:00 <User 1-5Q-5151>
7-Fix in Progress 2008-12-22 08:28:42 GMT+00:00 <User 1-5Q-5151>
=== *Service Request* ========================================================
Impact: Significant
Functionality: Secondary
Severity: 3
Product Name: solaris
Product Release: solaris_nevada
Product Build: snv_86
Operating System: solaris_nevada
Hardware: x86
Submitted Date: 2008-10-31 17:54:10 GMT+00:00
=== *Multiple Release (MR) Cluster* - 0 ======================================
