Server hangs during restore of SP with cross joined SP with joined table and
conditions on both tables
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Key: CORE-5636
URL: http://tracker.firebirdsql.org/browse/CORE-5636
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 4.0 Alpha 1
Environment: Win7 64, Firebird 4.0.0.760 Snapshot
Reporter: Volker Rehn
A single stored procedure makes version 4.0.0.760 hang during restore, full
CPU, no action forever. The SP contains PSQL like
for select a.param
from t1 a
cross join locate(a.report, a.instance, a.obj, a.param) s
join t2 b on b.id = s.id
where a.path = 'B2'
and a.uid = current_user
-- and b.uid = current_user
into ...
Precondition for the error seems to be cross joining a table with a SP, which
in turn is joined to a table again. But that alone is not enough. For the bug
to appear there must be conditions in the where part for *both* tables, it
comes up if the commented condition (the line 'and b.uid = current_user') is
activated. And it doesn't matter if t2 is empty.
I have tried to create a generic test case, so far with no luck.
Restore always hangs at this spot, and also execution of that code outside of a
SP, as select statement.
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