| Ticket UUID: | 3427030 | |||
| Title: | Memory leak in md5crypt::aprcrypt in tcllib 1.13 | |||
| Type: | Bug | Version: | None | |
| Submitter: | rich123 | Created on: | 2011-10-21 21:49:15 | |
| Subsystem: | md5crypt | Assigned To: | andreas_kupries | |
| Priority: | 5 Medium | Severity: | ||
| Status: | Deleted | Last Modified: | 2013-07-04 17:50:25 | |
| Resolution: | Not Applicable Here | Closed By: | andreas_kupries | |
| Closed on: | 2011-11-10 22:41:52 | |||
| Description: |
There is a memory leak somewhere in the md5crypt::aprcrypt implementation in tcllib
1.13.
Steps to repeat:
$ tclsh
% parray tcl_platform
tcl_platform(byteOrder) = littleEndian
tcl_platform(machine) = i686
tcl_platform(os) = Linux
tcl_platform(osVersion) = 2.6.33
tcl_platform(platform) = unix
tcl_platform(pointerSize) = 4
tcl_platform(user) = work
tcl_platform(wordSize) = 4
% puts $tcl_patchLevel
8.5.5
% package require md5crypt
1.1.0
% for {set i 0} {$i < 1000000} {incr i} { ::md5crypt::aprcrypt blah [ ::md5crypt::salt ] }
Watch memory usage of tclsh in top or another monitor. It will grow over time as the for loop iterates.
| |||
| User Comments: |
andreas_kupries added on 2011-11-11 05:41:14:
File Added - 428211: trial andreas_kupries added on 2011-11-11 05:39:59: I am unable to confirm this. Using a self-build Tcl 8.5.11 with memory debugging (--enable-symbols=all) and the attached modified test script I see the current and maximum allocations rock solid at their values, without any increase. I tried this with pure-Tcl md5crypt, and md5crypt accelerated via tcllibc. The latter I ran to the full million, the former only to 1000 rounds, gives that it is much slower. Output after completions: % ../../../DTest/8.5/Install/Debug/bin/tclsh8.5 ./trial 8.5.11 1.1.0 * 1009: m703050 834514^C % ../../../DTest/8.5/Install/Debug/bin/tclsh8.5 ./trial 8.5.11 1.1.0 * /home/aku/Projects/Tcllib/0.Releases/1.14/Base/modules/tcllibc/linux-x86_64/tcllibc.so Tcllibc 999999: m683191 750032 | |||
Attachments:
- trial [download] added by andreas_kupries on 2011-11-11 05:41:14. [details]