[Tcl-bugs] [ tcl-Bugs-1077474 ] Memory leak?

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Bugs item #1077474, was opened at 2004-12-02 07:53
Message generated for change (Comment added) made by msofer
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Category: 46. Bytecode Compiler
Group: current: 8.5a2
Status: Open
Resolution: None
Priority: 9
Submitted By: Donal K. Fellows (dkf)
Assigned to: miguel sofer (msofer)
Summary: Memory leak?

Initial Comment:
compile-12.1 fails for me (config: Linux, Fedora Core
2, Tcl HEAD built with --enable-symbols=all,
--enable-threads)

==== compile-12.1 testing literal leak on interp delete
FAILED
==== Contents of test case:

    proc getbytes {} {
        set lines [split [memory info] "\n"]
        puts [lindex $lines 3]
        lindex $lines 3 3
    }

    set end [getbytes]
    for {set i 0} {$i < 5} {incr i} {
        interp create foo
        foo eval {
            namespace eval bar {}
        }
        interp delete foo
        set tmp $end
        set end [getbytes]
    }
    rename getbytes {}
    set leak [expr {$end - $tmp}]

---- Result was:
20736
---- Result should have been (exact matching):
0
==== compile-12.1 FAILED


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>Comment By: miguel sofer (msofer)
Date: 2004-12-02 17:08

Message:
Logged In: YES 
user_id=148712

The leak was not there in 8.5a1

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Comment By: Jeffrey Hobbs (hobbs)
Date: 2004-12-02 16:32

Message:
Logged In: YES 
user_id=72656

I cannot confirm this for 8.4.9 or HEAD on Windows.  Unix
only??  Testing with:

make shell
% while 1 { interp delete [interp create a] }

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Comment By: miguel sofer (msofer)
Date: 2004-12-02 14:46

Message:
Logged In: YES 
user_id=148712

Leak is real, and independent ofcompile flags. With a normal
build, you can watch (in top) as a tclsh running
   while i {interp create a; interp delete a}
grows in memory used. 

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Comment By: miguel sofer (msofer)
Date: 2004-12-02 13:58

Message:
Logged In: YES 
user_id=148712

Reproed under --enable-symbols=mem (no threads); leak is
5328 here

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