Segfault when procedure dropped on classic server
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Key: CORE-5650
URL: http://tracker.firebirdsql.org/browse/CORE-5650
Project: Firebird Core
Issue Type: Bug
Components: Engine
Affects Versions: 4.0 Alpha 1, 3.0.2, 2.5.7, 3.0.1, 2.5.6, 3.0.0, 4.0
Initial, 2.5.5, 2.5.4, 2.5.3 Update 1, 2.1.7, 2.5.3, 2.5.2 Update 1, 2.5.2,
2.5.1, 2.5.0
Reporter: Alexander Peshkov
An issue was described on IBPhoenix tracker.
When procedure is used in some request it is marked being in use and can will
be protected from final removal till request release. But between compiling
request and locking resources used by it there is small timeframe when dropping
procedure is possible which leads to NULL returned from metadata cache lookup
function and in cases when there is no check for procedure pointer to be not
NULL may lead to segfault.
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