Random AV at client application using events when connection was broken
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Key: CORE-5530
URL: http://tracker.firebirdsql.org/browse/CORE-5530
Project: Firebird Core
Issue Type: Bug
Components: API / Client Library
Affects Versions: 2.5.7, 2.5.6, 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: Vlad Khorsun
If client application
- uses local (stack based) status vector when call ISC API functions, and
- uses events, and
- connection with server is broken,
then random AV could happens in some of application thread's.
The reason is that fbclient saves pointer to the user status-vector at entry to
the
all ISC API functions and later report network error happens at event listener
thread
using that saved pointer to the status-vector. If stack variable is out of
scope it
means events listener thread wrote to the some "random" place at the stack of
another thread.
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