Asynchronous cancellation request can be ignored in the case of EXECUTE
STATEMENT and WHEN used together
--------------------------------------------------------------------------------------------------------
Key: CORE-4356
URL: http://tracker.firebirdsql.org/browse/CORE-4356
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 2.1.4, 2.5.0, 2.1.3, 2.1.2, 2.1.1, 2.1.0
Reporter: Dmitry Yemanov
Artificial test case:
set term ^;
execute block as
declare stt varchar(255) = 'execute block as begin while (1 = 1) do begin end
end';
begin
while(1=1) do
begin
execute statement stt;
when any do begin end
end
end^
set term ;^
commit;
Then either press Ctrl-C in the current ISQL session or issue "delete from
mon$statements where mon$attachment_id <> current_connection" from a different
ISQL session.
The endless loop inside EXECUTE STATEMENT really gets interrupted but
isc_cancelled error gets handled by the WHEN block and the loop continues. This
is a bug, cancellation/shutdown errors should not be processed by exception
handlers.
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