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Memory corruptions in EXECUTE STATEMENT may crash the server [CORE1919] #2353

@firebird-automations

Description

@firebird-automations

Submitted by: @asfernandes

Due to two (one in V2.5) different memory corruptions, the server may crash with an EXECUTE STATEMENT.
One problem affects all platforms and the other is 64-bit only.

I can reproduce the crash with V2.5 in Linux AMD64, but not with V2.0 and V2.1 in the same environment.

Commits: 4e37a55 96fbc36 0d84abc