Bugs item #2556566, was opened at 2009-02-02 12:07
Message generated for change (Settings changed) made by romulog
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Category: SQL/Core
Group: SQL "stable"
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Romulo Goncalves (romulog)
Assigned to: Martin Kersten (mlkersten)
Summary: select from history
Initial Comment:
The following query crashes the M5-SQL
select * from history;
The crash:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffe1433950 (LWP 23049)]
0x00007fffe2520ce2 in rel_projections (sql=0x7fffe200b2a8, rel=0x7fffe1ea7c68,
tname=0x0, settname=1, intern=1) at
/ufs/goncalve/MonetDB/stable/sql/src/server/rel_select.mx:386
386 for (en = rel->exps->h; en; en = en->next) {
Missing separate debuginfos, use: debuginfo-install
bzip2-libs-1.0.5-3.fc10.x86_64 e2fsprogs-libs-1.41.3-2.fc10.x86_64
glibc-2.9-3.x86_64 keyutils-libs-1.2-3.fc9.x86_64
krb5-libs-1.6.3-16.fc10.x86_64 libselinux-2.0.73-1.fc10.x86_64
ncurses-libs-5.6-20.20080927.fc10.x86_64 openssl-0.9.8g-12.fc10.x86_64
pcre-7.8-1.fc10.x86_64 readline-5.2-13.fc9.x86_64 zlib-1.2.3-18.fc9.x86_64
(gdb)
The tname argument in the function is NULL.
----------------------------------------------------------------------
>Comment By: Romulo Goncalves (romulog)
Date: 2009-02-03 11:48
Message:
Bug is fixed with the following check in:
[Monetdb-sql-checkins] sql/src/server rel_select.mx, Feb2009, 1.113.2.1,
1.113.2.2
Log Message:
be more protective when looking at sql stack variables
(ie don't intepret simple values as tables)
Solves bug select * from history)
----------------------------------------------------------------------
Comment By: Romulo Goncalves (romulog)
Date: 2009-02-02 12:12
Message:
Test added at:
sql/src/tests/BugTracker-2009/Tests/select_from_history.SF-2556566.sql
----------------------------------------------------------------------
Comment By: Romulo Goncalves (romulog)
Date: 2009-02-02 12:09
Message:
Sorry
The problem is not with tname, it is the rel->exps :)
386 for (en = rel->exps->h; en; en = en->next) {
(gdb) p rel->exps
$2 = (list *) 0xdbdbdbdbdbdbdbdb
(gdb)
----------------------------------------------------------------------
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