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For what it's worth,
a simpler way to reproduce the assertion / crash is by loading the data from http://homepages.cwi.nl/~manegold/Bug-6764-data.csv.bz2
into the table defined by attached Bug-6764-schema.ddl
and then run attached Bug-6764-query.sql
Date: 2019-09-20 17:34:07 +0200
From: @drstmane
To: SQL devs <>
Version: 11.33.11 (Apr2019-SP1)
Last updated: 2019-11-28 10:00:06 +0100
Comment 27308
Date: 2019-09-20 17:34:07 +0200
From: @drstmane
mserver5 crashes with one of the following errors:
corrupted double-linked list
corrupted size vs. prev_size
double free or corruption (out)
double free or corruption (!prev)
free(): invalid size
munmap_chunk(): invalid pointer
script to reproduce will follow.
Comment 27309
Date: 2019-09-20 17:37:17 +0200
From: @drstmane
Please find a script to reproduce the bug at
http://homepages.cwi.nl/~manegold/Bug-6764.tar
Comment 27312
Date: 2019-09-21 21:22:00 +0200
From: @drstmane
when running a debug build of mserver5,
some crashes still occur:
corrupted double-linked list
corrupted size vs. prev_size
free(): invalid size
while instead(?) of the other crashes (see initial comment), these assertions are triggered:
MonetDB/gdk/gdk_bat.c:1587: BATsetcount: Assertion
b->batCapacity >= cnt' failed. MonetDB/gdk/gdk_utils.c:1789: GDKfree: Assertion
(asize & 2) == 0' failed.MonetDB/gdk/gdk_utils.c:1794: GDKfree: Assertion `((char *) s)[i] == '\xBD'' failed.
Comment 27313
Date: 2019-09-23 11:44:54 +0200
From: @drstmane
Created attachment 635
table schema
Comment 27314
Date: 2019-09-23 11:45:24 +0200
From: @drstmane
Created attachment 636
query that triggers assertion / crash
Comment 27315
Date: 2019-09-23 11:47:07 +0200
From: @drstmane
For what it's worth,
a simpler way to reproduce the assertion / crash is by loading the data from
http://homepages.cwi.nl/~manegold/Bug-6764-data.csv.bz2
into the table defined by attached Bug-6764-schema.ddl
and then run attached Bug-6764-query.sql
Comment 27316
Date: 2019-09-23 12:34:53 +0200
From: @drstmane
ps: the copy into statement should look as follows:
COPY OFFSET 3 INTO "data-x" FROM '.../Bug-6764-data.csv.bz2' DELIMITERS ',','\n','' NULL AS '';
Comment 27317
Date: 2019-09-23 14:24:38 +0200
From: MonetDB Mercurial Repository <>
Changeset cc708f0d0b28 made by Sjoerd Mullender sjoerd@acm.org in the MonetDB repo, refers to this bug.
For complete details, see https//devmonetdborg/hg/MonetDB?cmd=changeset;node=cc708f0d0b28
Changeset description:
Comment 27319
Date: 2019-09-24 09:21:08 +0200
From: @drstmane
Changeset cc708f0d0b28 indeed appears to fix also the other incarnations of the bug (crash/assertion) reported here.
Thank you very much!
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