On 2013-04-22 18:35:04 +0530, Jeevan Chalke wrote: > Hi, > > I have observed that following sequence is causing server crash. > > CREATE MATERIALIZED VIEW temp_class_mv AS > SELECT * FROM pg_class > WITH NO DATA; > > CREATE OR REPLACE FUNCTION test_refresh_mv() > RETURNS int > AS $$ > BEGIN > REFRESH MATERIALIZED VIEW temp_class_mv; > return 1; > END; $$ LANGUAGE plpgsql; > > SELECT test_refresh_mv(); > > > I had a quick look over the crash and it is hitting following Assert in > spi.c: > > else if (IsA(stmt, RefreshMatViewStmt)) > { > Assert(strncmp(completionTag, > "REFRESH MATERIALIZED VIEW ", 23) == 0); > _SPI_current->processed = strtoul(completionTag + 23, > NULL, 10); > } > > It seems like we are missing expected value for completionTag in > ExecRefreshMatView()
Possibly independent from this issue, but where did that 23 come from?
23 is also bogus here.
It should be 26 i.e. length of "REFRESH MATERIALIZED VIEW "
BTW, attached is the patch which works well for me, but need details review.
Thanks
ISTM we're strtoul()ing "EW somenumber" here.
Greetings,
Andres Freund -- Andres Freund http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services
-- Jeevan B Chalke Senior Software Engineer, R&D EnterpriseDB Corporation The Enterprise PostgreSQL Company
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