3398671 - IQ 16 SP11 PL26 stacks at stcxtlib/st_server.cxx:2185 with DSFT view Unions - SAP IQ

SAP IQ crashes with following stack trace

    **  Error from IQ connection:  SA connHandle: 730  SA connID: 14  IQ connID: ***** User: *****
    **  Time of error:  2020-09-07 11:21:08
    **  IQ Version:  SAP IQ/16.0.110/14360/P/sp11.26
    **  OS info:  IQ built on: Enterprise Linux64 - x86_64 - 2.6.18-194.el5,  
    **  Command status when error occurred:  NO COMMAND OR CURSOR ACTIVE
    **  Parser command text:
    **  Dump all thread stacks at stcxtlib/st_server.cxx:2185 for PID: 17462

***************** This is the STACKTRACE ***************

===== Thread Number 140037227157248 (IQ connID: *****) =====
pcstkwalk
ucstkgentrace
DumpAllThreads
hos_ABORT
SigHndlr
_fini
...
_fini
GetNewTree
MakeExternalCursor
MakeVolcanoOptimizerCursor
MakeCursor
dbi_partialopen
a_plan_cache::OpenPartial
dbi_describe_statement
db__describe_output
RequestProcedure::call
Context::call
Worker::call_on_stack
TopProcedure::call
Worker::spawn
EngStream::handle_ind
EngStream::execute
RQBaseItem::do_work
RequestQueue::worker_body
request_task
run_task_body
UnixTask::pre_body

SAP IQ 16.0 sp11.26

CR 822759, CR822759, 822759, , KBA , BC-SYB-IQ , Sybase IQ , Problem