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Memory leak when using CTE within procedure [CORE1370] #1788

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firebird-issue-importer opened this issue Jul 20, 2007 · 5 comments
Closed

Memory leak when using CTE within procedure [CORE1370] #1788

firebird-issue-importer opened this issue Jul 20, 2007 · 5 comments

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@firebird-issue-importer

Submitted by: Viner Mihail (mviner)

1) Create new database
2) Create table and procedure with CTE:

create table t ( id int, parent int )
insert into t (id,parent) values (0,0)
insert into t (id,parent) values (1,0)
insert into t (id,parent) values (2,0)
insert into t (id,parent) values (3,1)

create procedure p ( parent integer)
returns ( id integer)
as
begin
for with recursive children as (
select id, parent from t where id=:parent
union all
select http://t.id, t.parent from t join children c on http://t.parent=c.id and http://t.id<>http://c.id
) select id from children into id do suspend;
end

3) Run a query:

execute block
as
declare i integer = 0;
declare id integer;
begin
while (i<200000) do begin
for select id from p(0) into id do begin end
i = i + 1;
end
end

9 Mb of memory is allocated. It is not released after commit or rollback. Only released when disconnected.

Commits: 8ff8037

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@firebird-issue-importer firebird-issue-importer commented Jul 20, 2007

Modified by: @dyemanov

assignee: Vlad Horsun [ hvlad ]

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@firebird-issue-importer firebird-issue-importer commented Jul 21, 2007

Modified by: @hvlad

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 2.1 Beta 2 [ 10190 ]

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@firebird-issue-importer firebird-issue-importer commented Jan 28, 2008

Modified by: @pcisar

Workflow: jira [ 12630 ] => Firebird [ 14224 ]

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@firebird-issue-importer firebird-issue-importer commented Nov 18, 2008

Modified by: @pcisar

status: Resolved [ 5 ] => Closed [ 6 ]

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@firebird-issue-importer firebird-issue-importer commented Jan 19, 2016

Modified by: @pavel-zotov

QA Status: No test

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