Bugs item #2874045, was opened at 2009-10-07 11:32
Message generated for change (Settings changed) made by nielsnes
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Category: SQL/Core
Group: SQL CVS Head
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Stefan de Konink (skinkie)
Assigned to: Niels Nes (nielsnes)
Summary: SQL: segv for unknown identifier in subquery
Initial Comment:
select (select 1) * (select vettecrash from tables);
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f0928f1b6f0 (LWP 22280)]
0x00007f09169c5971 in list_select (l=0x0, key=0x1b92938,
cmp=0x7f091698a3f4 <exp_is_correlation>, dup=0x7f0916988710 <exp_dup>)
at ../../../src/common/sql_list.mx:282
282 list *res = list_create(l->destroy);
I would expect the same error as in:
select vettecrash from tables;
!SELECT: identifier 'vettecrash' unknown
After limiting the problem to a smaller query:
>select (select vettecrash from tables);
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fb14e9396f0 (LWP 22409)]
0x00007fb13c3e2ba0 in sql_ref_inc (r=0x0) at ../../../src/common/sql_mem.mx:44
44 assert(r->refcnt > 0);
----------------------------------------------------------------------
>Comment By: Niels Nes (nielsnes)
Date: 2009-11-11 17:33
Message:
added test segv_for_unknown_identifier_in_subquery.SF-2874045.sql
Fixed by more defensive list_select.
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