*Synopsis*: Recursive function+command substitutions terminate shell after 257
iterations
CR 6769332 changed on Nov 23 2009 by <User 1-2S67RN>
=== Field ============ === New Value ============= === Old Value =============
Integrated in Build snv_128
Status 10-Fix Delivered 8-Fix Available
====================== =========================== ===========================
*Change Request ID*: 6769332
*Synopsis*: Recursive function+command substitutions terminate shell after 257
iterations
Product: solaris
Category: shell
Subcategory: korn93
Type: RFE
Subtype:
Status: 10-Fix Delivered
Substatus:
Priority: 3-Medium
Introduced In Release: solaris_nevada
Introduced In Build: snv_72
Responsible Engineer: <User 1-7MTUEB>
Keywords: opensolaris, oss-request, oss-sponsor
=== *Description* ============================================================
Category
shell
Sub-Category
korn
Description
Recursive function+command substitutions (e.g. func1() { x=$( func2 ) ; } ;
x=$( func1 ) ) terminate the ksh93 shell after 257 iterations with a exit code
of "0" (it seems the shell just "quits" after the last "return 0" statement in
the function).
Running the attached testcase terminates the shell after 257 iterations (g=257
in the script) while 256 iterations (replace "257" with "256" in the script)
just works fine.
The same testcase works Ok in ksh88 (=/usr/bin/ksh in Solaris 10U5)
Frequency
Always
Regression
No
Steps to Reproduce
Execute the testcase.
Expected Result
The script should output "done" and return the exit code 0.
Actual Result
No messsge. Exit code "0".
Error Message(s)
None (exit code is "0").
Test Case
f1()
{
h=$1
(( h=h-1 ))
(( h <= 0 )) && return 0
x=$(f1 "$h" "$l" "$g" d e "$l") || print -u2 "$g/$h: fail"
return 0
}
l=""
g=257
i=0
while (( i < $g )) ; do
l="${l}x"
(( i=i+1 ))
done
f1 "$g" "$l" "$g" d e "$l" || print -u2 "$g: fail0"
print "done"
exit 0
Workaround
-
Submitter wants to work on bug
Yes
Additional configuration information
Solaris 11/B84
*** (#1 of 1): 2008-11-08 20:38:56 GMT+00:00 <User 1-F4SZV>
=== *Public Comments* ========================================================
=== *Workaround* =============================================================
=== *Additional Details* =====================================================
Targeted Release: solaris_nevada
Commit To Fix In Build: snv_128
Fixed In Build: snv_128
Integrated In Build: snv_128
Verified In Build:
See Also: 6437624, 6793763
Duplicate of:
Hooks:
Hook1:
Hook2:
Hook3:
Hook4:
Hook5: <email address omitted>
Hook6: <email address omitted>
Program Management:
Root Cause: Insufficient Testing
Fix Affects Documentation: No
Fix Affects Localization: No
=== *History* ================================================================
Date Submitted: 2008-11-08 20:38:55 GMT+00:00
Submitted By: <User 1-F4SZV>
Status Changed Date Updated Updated By
4-Defer 2009-03-18 14:24:37 GMT+00:00 <User 1-5Q-9633>
1-Dispatched 2009-03-18 14:25:00 GMT+00:00 <User 1-5Q-9633>
6-Fix Understood 2009-06-17 12:11:37 GMT+00:00 <User 1-1SURPB>
7-Fix in Progress 2009-10-23 17:30:17 GMT+00:00 <User 1-7MTUEB>
8-Fix Available 2009-10-28 18:23:30 GMT+00:00 <User 1-5HNZ8F>
10-Fix Delivered 2009-11-23 05:16:49 GMT+00:00 <User 1-2S67RN>
=== *Service Request* ========================================================
Impact: Significant
Functionality: Secondary
Severity: 3
Product Name: solaris
Product Release: solaris_nevada
Product Build: snv_84
Operating System: solaris_nevada
Hardware: generic
Submitted Date: 2008-11-08 20:38:56 GMT+00:00
=== *Multiple Release (MR) Cluster* - 0 ======================================
