Bugs item #1852518, was opened at 2007-12-17 16:39
Message generated for change (Comment added) made by nielsnes
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Category: Core
Group: MonetDB Common CVS Head
Status: Open
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Stefan Manegold (stmane)
Assigned to: Niels Nes (nielsnes)
Summary: GDK/M4/PF: GDK assertion in PF/XQ tests since 2007/11/15

Initial Comment:
Since Nov 15 2007 (i.e., after checkins on Nov 14 2007) PF/XQ tests
pathfinder/modules/pftijah/Tests/cleanup.milS
pathfinder/tests/BugTracker/Tests/pf_add-doc_property_error.SF-1706438.xq
fail with

Mserver: .../MonetDB/src/gdk/gdk_bbp.mx:1284: incref: Assertion 
`BBP[(((int)(i))>0?((int)(i)):-((int)(i)))].refs+BBP[(((int)(i))>0?((int)(i)):-((int)(i)))].lrefs'
 failed.

Cf.,
http://monetdb.cwi.nl/testing/projects/monetdb/Current/pathfinder/.mTests103/GNU.64.64.d-Fedora6/modules_pftijah/cleanup.err.00.html
http://monetdb.cwi.nl/testing/projects/monetdb/Current/pathfinder/.mTests103/GNU.64.64.d-Fedora6/tests_BugTracker/pf_add-doc_property_error.SF-1706438.err.00.html

Since there was only one Pathfinder checkin on Nov 14 2007 by Niels related to 
his GDK_init and (un)aligned memory changes in GDK on the same day, I (for now) 
assume this a GDK bug, and assign it to Niels.

I haven't done any further analysis, yet.


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>Comment By: Niels Nes (nielsnes)
Date: 2007-12-21 11:48

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It seems the assert is incorrect. It is allowed too access (ie incref) a
transient bat which used to be persistent (even if all references too it
are removed). I'll check in a better assert after testing finishes.

----------------------------------------------------------------------

Comment By: Stefan Manegold (stmane)
Date: 2007-12-21 07:46

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For the first test the problem can easily be reproduced by executing the
following commands in .../pathfinder/modules/pftijah/Tests/:

export TSTSRCDIR=$PWD
Mserver loadthesis.milS cleanup.milS 


----------------------------------------------------------------------

Comment By: Stefan Manegold (stmane)
Date: 2007-12-21 07:41

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For the second test the problem can easily be reproduced by having a
MonetDB/XQuery server (`Mserver --dbinit='module(pathfinder);'`) running
and then executing the following command in
.../pathfinder/tests/BugTracker/Tests/:

sed "s|\$TSTSRCDIR|$PWD|" pf_add-doc_property_error.SF-1706438.xq.in |
mclient -lx


----------------------------------------------------------------------

Comment By: Stefan Manegold (stmane)
Date: 2007-12-17 16:43

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Better look at (e.g.)

http://monetdb.cwi.nl/testing/projects/monetdb/Current/pathfinder/.mTests10
3/GNU.32.32.d-Fedora6/modules_pftijah/cleanup.err.00.html
http://monetdb.cwi.nl/testing/projects/monetdb/Current/pathfinder/.mTests10
3/GNU.32.32.d-Fedora6/tests_BugTracker/pf_add-doc_property_error.SF-1706438
.err.00.html

as the GNU-compiled 64-bit, 64-bit OID version of Pathfinder (also when
compiled with optimization enabled) seems to suffer from the gcc bug
reported in
[ 1830366 ] gcc 4.1/4.2 produces wrong code on FC6 & RHEL4WS
https://sourceforge.net/tracker/index.php?func=detail&aid=1830366&group_id=56967&atid=482468


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