Thread

1. v6.3 snapshot core dump

   Brett McCormick <brett@techno.chicken.org> — 1998-02-13T11:19:44Z

   this is the latest snapshot under linux 2.0.33
   
   when I create a view with an aggregate such as count (with a group by
   clause) I get a core dump.  The first three lines of the gdb backtrace
   follows:
   
   #0  0x80a9982 in ExecEvalAggreg (agg=0x820fa20, econtext=0x8213a48, 
       isNull=0xbfffd6cf "") at execQual.c:201
   #1  0x80ab271 in ExecEvalExpr (expression=0x820fa20, econtext=0x8213a48, 
       isNull=0xbfffd6cf "", isDone=0xbfffd7c3 "\001\fZ\031\b\030K!\b")
       at execQual.c:1199
   #2  0x80ab69b in ExecTargetList (targetlist=0x8213498, nodomains=2, 
       targettype=0x8214990, values=0x8214b48, econtext=0x8213a48, 
       isDone=0xbfffd7c3 "\001\fZ\031\b\030K!\b") at execQual.c:1484
   
   code at point:
   
   201             *isNull = econtext->ecxt_nulls[agg->aggno];
   
   econtext->ecxt_nulls, is, well, a NULL pointer and hard to index :)
   i'll take a look but I don't think I'll find it -- i notice that 6.2.1
   pretends to make a view with aggregates but then it comes up empty
   when selected.
   
   --brett
   let me know if you need more info
   
   

2. Re: [HACKERS] v6.3 snapshot core dump

   Vadim B. Mikheev <vadim@sable.krasnoyarsk.su> — 1998-02-13T12:11:26Z

   Brett McCormick wrote:
   > 
   > this is the latest snapshot under linux 2.0.33
   > 
   > when I create a view with an aggregate such as count (with a group by
   > clause) I get a core dump.  The first three lines of the gdb backtrace
   > follows:
   ...
   > 
   > 201             *isNull = econtext->ecxt_nulls[agg->aggno];
   > 
   > econtext->ecxt_nulls, is, well, a NULL pointer and hard to index :)
   > i'll take a look but I don't think I'll find it -- i notice that 6.2.1
   > pretends to make a view with aggregates but then it comes up empty
   > when selected.
   > 
   > --brett
   > let me know if you need more info
   
   Did this work in previous 6.3 snapshots ?
   
   Vadim
   
   

3. Re: [HACKERS] v6.3 snapshot core dump

   Brett McCormick <brett@work.chicken.org> — 1998-02-13T12:40:24Z

   On Fri, 13 February 1998, at 19:11:26, Vadim B. Mikheev wrote:
   
   > > econtext->ecxt_nulls, is, well, a NULL pointer and hard to index :)
   > > i'll take a look but I don't think I'll find it -- i notice that 6.2.1
   > > pretends to make a view with aggregates but then it comes up empty
   > > when selected.
   > > 
   > > --brett
   > > let me know if you need more info
   > 
   > Did this work in previous 6.3 snapshots ?
   > 
   > Vadim
   
   I never attempted it before.
   
   
   

4. Re: [HACKERS] v6.3 snapshot core dump

   Bruce Momjian <maillist@candle.pha.pa.us> — 1998-02-13T18:25:15Z

   I will look into this.  I made many fixes in 6.3 for aggregates and
   views, but I did not test views of aggregates.  I will do that soon.
   
   Good test case.
   
   > 
   > 
   > this is the latest snapshot under linux 2.0.33
   > 
   > when I create a view with an aggregate such as count (with a group by
   > clause) I get a core dump.  The first three lines of the gdb backtrace
   > follows:
   > 
   > #0  0x80a9982 in ExecEvalAggreg (agg=0x820fa20, econtext=0x8213a48, 
   >     isNull=0xbfffd6cf "") at execQual.c:201
   > #1  0x80ab271 in ExecEvalExpr (expression=0x820fa20, econtext=0x8213a48, 
   >     isNull=0xbfffd6cf "", isDone=0xbfffd7c3 "\001\fZ\031\b\030K!\b")
   >     at execQual.c:1199
   > #2  0x80ab69b in ExecTargetList (targetlist=0x8213498, nodomains=2, 
   >     targettype=0x8214990, values=0x8214b48, econtext=0x8213a48, 
   >     isDone=0xbfffd7c3 "\001\fZ\031\b\030K!\b") at execQual.c:1484
   > 
   > code at point:
   > 
   > 201             *isNull = econtext->ecxt_nulls[agg->aggno];
   > 
   > econtext->ecxt_nulls, is, well, a NULL pointer and hard to index :)
   > i'll take a look but I don't think I'll find it -- i notice that 6.2.1
   > pretends to make a view with aggregates but then it comes up empty
   > when selected.
   > 
   > --brett
   > let me know if you need more info
   > 
   > 
   
   
   -- 
   Bruce Momjian
   maillist@candle.pha.pa.us